The worldwide market for light bulbs was a little over 20 billion units for the year 2010 with the LED unit count approximately 0.5% or 96 million units, as Brian Johnson, Lighting Specialist at Fairchild Semiconductor, wrote in the March Power Special of Electronic Products. Cutting costs by reducing LED system components is the key to growing the LED residential lighting segment in theUnited States.
The LED unit count includes all types of LED units ranging from automotive, traffic lights, signage, to specialty and camera flash. Residential high-brightness LEDs consisting of MR16, PAR, A19, E14/17, and E26/27 bulb types accounted for 800,000 units in 2010.
The LED lamp unit projected growth is expected to double by the year 2013 with a growth of a factor of 10 by year 2016.
However, in order to realize these LED lamp unit growth projections, the cost of residential LEDs must decrease. The end user sees total costs, which becomes the largest barrier to LED lighting adoption, regardless of the performance improvements over other types of lighting solutions. The U.S. Department of Energy estimates that LED drivers make up greater than 10% for the total cost for a LED driver. In order to achieve the projected LED lamp growth, the cost of the LED driver will have to reduce by a factor of four.
However, cost is not the only challenge to the LED driver designer. Find out more at Electronic Products, visit our LED lighting solutions page, and watch the video from APEC which shows Fairchild’s own Alex Craig demonstrating the FL7730.
New, innovative power electronic technologies are required to help sustainable energy manufacturers reduce cost, improve efficiency and improve reliability. Semiconductor companies such as Fairchild Semiconductor, with a long history of technology and manufacturing excellence, will be able to help meet these demands.
At APEC 2012, in booth #701, February 5-9, 2012, at Disney’s Coronado Springs Resort, Orlando, Fairchild Semiconductor highlight solutions including the FAN9611 interleaved dual BCM PFC controller for solar micro inverters, as well as a smart meter power solution using the FSL137H power switch and Fairchild’s new ESBC switch series which provides increased efficiency, flexibility and robustness.
On display at the show, the FAN9611 is an interleaved dual Boundary Conduction-Mode (BCM) Power Factor Correction (PFC) controller that operates two parallel-connected boost power trains 180° out of phase. Interleaving extends the maximum practical power level of the control technique from about 300W to greater than 800W.
Also being demonstrated is the highly integrated FSL137H, which consists of an integrated current mode Pulse Width Modulator (PWM) with avalanche-rugged 700V SenseFET technology. It is specifically designed for high-performance offline Switch Mode Power Supplies (SMPS) with minimal external components. The integrated PWM controller features include a proprietary green-mode function that provides off-time modulation to linearly decrease the switching frequency at light-load conditions to minimize standby power consumption.
Additionally, Fairchild’s ESBC™ switches offer saturation performance similar to a BJT and much lower than a MOSFET or IGBT. They also feature lower switching losses. Fairchild’s solution consists of a high voltage start-up and input capacitor, and a high-efficiency output regulator. These combine to provide a new standard of efficiency, low standby power, and high operating voltages for off-line power supplies.
Fairchild provides leading-edge silicon and packaging technologies, manufacturing strength and system expertise for consumer, communications, industrial, portable, computing and automotive systems. An application-driven, solution-based semiconductor supplier, Fairchild provides online design tools and design centers worldwide as part of its comprehensive commitment to customer satisfaction.
Join us at APEC 2012 in booth #701 to see our extensive portfolio of power solutions!
Fairchild Semiconductor: Solutions for Your Success™
As standby power requirements in devices such as notebooks, printers, LCD TVs and monitors continue to decrease, below 50mW in many applications, designers need a solution to address standby power consumption in their current designs. To meet these stringent regulations today, additional circuitry or control devices are needed to remove the power loss, resulting in a much higher BOM cost and a more complex circuit design.
At APEC 2012, in booth #701, February 5-9, 2012, at Disney’s Coronado Springs Resort, Orlando, Fairchild Semiconductor will demonstrate the FAN6756, which provides designers <30mW low standby power; and a high-efficiency dual-switch Flyback solution that provides designers with a reduced bill of materials and an easy to design topology that meets 2013 ErP requirements.
The single-chip FAN6756 is a highly integrated green-mode PWM controller, capable of significantly reducing standby losses in SMPS designs, eliminating up to 15 external components. When compared to competitive IC solutions available today, the device achieves greater power savings and can save the designer up to $.30 in bill of material (BOM) costs.
Fairchild’s dual switch QR flyback topology and secondary synchronous rectification is the ideal solution for AIO applications – providing good overall efficiency, managing low power loss at light load, while providing ease of design.
The Dual Switch Flyback solution from Fairchild is perfectly suited for applications from 75W~230W and consists of the FAN6920MR integrated critical mode PFC and Quasi-resonant Current Mode PWM controller, the FAN7382 gate driver, in tandem with the FAN6204 secondary synchronous rectifier controller for flyback topology and forward freewheeling rectification. Combined, these devices provide best-in-class power consumption at no/light load, enabling designs to meet 2013 ErP standard without the additional circuitry LLC solutions require.
Fairchild Semiconductor’s mWSaver technology offers best-in-class minimum no-load and light-load power consumption to meet current and proposed worldwide standards and regulations and enables designers to achieve reduced form factors, improved reliability and lower system costs.
Join us at APEC 2012 in booth #701 to see our extensive portfolio of power solutions!
Fairchild Semiconductor: Solutions for Your SuccessTM
With the increasing popularity of LED lighting applications, designers face challenges ranging from design complexity and the need for high system efficiency to limited PCB space and the management of multiple vendors to meet all of their design requirements.
At APEC 2012, in booth #701, February 5-9, 2012, at Disney’s Coronado Springs Resort, Orlando, Fairchild Semiconductor will showcase its broad portfolio of LED lighting solutions for low-, mid- and high-power lighting applications.
On display at the show is the FL7701 Smart Non-isolated Buck LED Driver with power factor correction (PFC). The device uses a digital technique that allows it to automatically detect the AC input voltage condition, allowing it to create a special internal reference signal that results in high power factor correction. The FL7701 will also work from a DC input voltage condition, automatically sensing AC versus DC input voltage conditions.
The FL7701 combines high functional density in a small form factor that provides designers up to 20 percent lower bill of material (BOM) costs and up to 60 percent board space savings. This combination creates a solution suitable for the space-constrained PCB sizes found in LED lighting applications and supports analog dimming.
Fairchild’s LED lighting solutions feature integrated components in a single IC, using highly efficient and effective technologies for power ranges that are 1W and above. Fairchild offers multiple topologies, which provide energy efficient solutions for low-, mid- and high-power lighting applications. These topologies provide high power factor and low total harmonic distortion, enabling extended system life and reduced lifetime cost while meeting global energy regulations.
Join us at APEC 2012 in booth #701 to see our extensive portfolio of power solutions!
Fairchild Semiconductor: Solutions for Your Success
At APEC 2012, in booth #701, February 5-9, 2012, at Disney’s Coronado Springs Resort, Orlando, Fairchild Semiconductor will showcase high-performance point-of-load digital power solutions using an advanced configurable digital controller and DrMOS as well as Fairchild’s new power stage dual-asymmetric MOSFETs that address the power supply designers’ need for high power density and ease of design in notebook, point-of-load, server, gaming and telecommunication applications.
As requirements expand to provide more functionality in end systems, power engineers are being challenged with providing higher current output in less board area. The FDMS36xx family of power stage dual asymmetric MOSFETs provide higher current output and reduce your power supply area. These devices feature Integrated control (high side) and synchronous (low side) MOSFETs as well as a Schottky body diode in a single 5mmx6mm PQFN package. They reduce foot print area by 50% or more replacing two or three 5×6 components and provides the high power density for point of load and multi-phase synchronous buck DC-DC applications.
High efficiency, high current handling capability and small form factors are critical to power supply designers when selecting components for voltage regulator solutions. To meet this need, Fairchild Semiconductor developed its family of Generation II XS™DrMOS [Integrated Driver + MOSFET] devices offering high efficiency and power density to enable designers to meet specific design needs for various applications. Generation II XS DrMOS devices, available in a small, 6mm x 6mm high performance clip PQFN package, feature higher system efficiency with over 91.5 percent heavy load efficiency at 12Vin, 1Vout, and 25A, and 94 percent peak efficiency. Generation II XS DrMOS can be operated at a 2MHz switching frequency and have up to 50A of current handling capability.
Join us at APEC 2012 in booth #701 to see our extensive portfolio of power solutions!
Fairchild Semiconductor: Solutions for Your Success™
At APEC 2012, in booth #701, February 5-9, 2012, at Disney’s Coronado Springs Resort, Orlando, Fairchild Semiconductor, (NYSE: FCS) a leading global supplier of high performance power and mobile products, will address the real energy challenges designers face every day, and demonstrate power supply solutions featuring mWSaverTM technology, including energy efficient controllers for flyback designs. Technology experts will also be presenting on various topics.
Fairchild’s chief technology officer and senior vice president, Dan Kinzer, will deliver the opening plenary session on Monday, February 6, at 1:30 p.m. His topic, “Maximizing Fossil Fuel Savings Through Power Electronics,” will discuss how power electronics technologies are fundamental to reducing energy consumption in many applications, as well as to the development of cost-effective energy alternatives to fossil fuels. The total fuel savings opportunities will be analyzed in applications like HVAC, industrial drives, lighting, automotive, appliances, power grid, energy storage, internet, communications, computing, and entertainment. New power electronic technologies will be compared for their impact. Examples will be drawn from wide band gap and silicon power device performance improvement, module and component level packaging, power distribution architecture, and advanced power control techniques.
Also during the show, Fairchild experts will present on various topics including:
“An interleaved single-stage flyback AC-DC converter with wide output power range for outdoor LED lighting systems,” Sangcheol Moon, Gwan-Bon Koo, Gun-woo Moon, Technical Session: AC-DC Converter II, Wednesday, Feb. 8, 2 p.m. to 530 p.m., Fiesta 9-10.
“Design optimization of TRIAC-dimmable AC-DC converters in LED Lighting,” Hyunchul Eom, Chun Ching Lee, Ta Yung Yan, Seunguk Yang, Technical Session: AC-DC Converter II, Wednesday, Feb. 8, 2 p.m. to 530 p.m., Fiesta 9-10.
“New Power MOSFET Technologies Optimized for Efficient and Reliable Telecommunication Power Systems,” Wonsuk Choi, Sungmo Young, Dongkook Son, Poster Session: Devices and Components, Thursday, Feb. 9, 11:30 a.m. to 1:30 p.m., Veracruz.
Fairchild provides leading-edge silicon and packaging technologies, manufacturing strength and system expertise for consumer, communications, industrial, portable, computing and automotive systems. An application-driven, solution-based semiconductor supplier, Fairchild provides online design tools and design centers worldwide as part of its comprehensive commitment to customer satisfaction.
Join us at APEC 2012 in booth #701 to see our extensive portfolio of power solutions!
Fairchild Semiconductor: Solutions for Your SuccessTM
Demos in the booth will highlight Fairchild solutions for other power-related challenges faced by designers today, including:
LED Lighting – demos focusing on low to high power LED lighting applications, including the FL7730 dimmable single-stage PFC PSR off-line LED driver (TRIAC dimmable) for residential applications, as well as a complete driver solution for applications >150W.
Power Supplies – highlighting solutions that showcase Fairchild’s mWSaver technology, including the FAN6756, which provides designers <30mW low standby power; and a high-efficiency dual-switch Flyback solution that provides designers with a reduced bill of materials and an easy to design topology that meets 2013 ErP requirements.
Sustainable Energy – solutions including the FAN9611 interleaved dual BCM PFC controller for solar micro inverters, as well as the smart meter power solution using FSL137H power switch and Fairchild’s new ESBCTM switch series which provides increased efficiency, flexibility and robustness.
Motion Control – demos focusing on Fairchild solutions including BLDC controllers, smart power modules (SPM®), high voltage MOSFETs and IGBTs that allow designers to improve the efficiency and reliability of the industrial controls and home appliance designs.
DC-DC Conversion – high-performance point-of-load digital power solutions using an advanced configurable digital controller and DrMOS as well as Fairchild’s new power stage dual-asymmetric MOSFETs that address the power supply designers’ need for high power density and ease of design in notebook, point-of-load, server, gaming and telecommunication applications.
Fairchild provides leading-edge silicon and packaging technologies, manufacturing strength and system expertise for consumer, communications, industrial, portable, computing and automotive systems. An application-driven, solution-based semiconductor supplier, Fairchild provides online design tools and design centers worldwide as part of its comprehensive commitment to customer satisfaction.
Join us at APEC 2012 in booth #701 to see our extensive portfolio of power solutions!
Fairchild Semiconductor: Solutions for Your SuccessTM
Fairchild will highlight its dual switch QR flyback topology and secondary synchronous rectification solution for power supply applications (75W~230W). The Dual Switch topology consists of the FAN6920MR integrated critical mode PFC and Quasi-resonant Current Mode PWM controller, the FAN7382 gate driver, in tandem with the FAN6204 secondary synchronous rectifier controller for flyback topology and forward freewheeling rectification- providing good overall efficiency, managing low power loss at light load, while providing ease of design.
Also on display is Fairchild’s Power Supply WebDesigner (PSW) – an easy to use, powerful online simulation tool that allows designers to throw the application note away and “Auto Design,” optimize or “Advance Design” like a power supply expert.
Fairchild provides leading-edge silicon and packaging technologies, manufacturing strength and system expertise for consumer, communications, industrial, portable, computing and automotive systems. An application-driven, solution-based semiconductor supplier, Fairchild provides online design tools and design centers worldwide as part of its comprehensive commitment to customer satisfaction.
Join us at APEC 2012 in booth #701 to see our extensive portfolio of power solutions!
Fairchild Semiconductor: Solutions for Your SuccessTM
We may be getting ready for New Year ‘s Eve 2012, but power designers are already looking at 2013, since it will be a year of significant changes.
The EU eco-design directive ErP (Energy-related Products) requires the maximum power consumption of electronics devices in standby mode to be more stringent, decreasing from <1W in the year of 2010 to <0.5W in the year of 2013.
To achieve less than 0.5W standby power consumption remains a significant challenge for auxiliary power supply designs in applications such as PCs, game consoles and LED TVs.
If you are still looking for solutions to meet the challenge of 2013 ErP, here is one from Fairchild.
The FSB1x7H series, the next-generation green-mode Fairchild Power Switch (FPSTM):
Provides designers with No-Load Power Consumption < 50mW at 230VAC (EMI Filter Loss Included)
Meets 2013 ErP Standby Power Regulation (< 0.5W at 0.25W Load) for Auxiliary ATX Power and LCD TV Power
Eliminates X-Cap Discharge Resistor Loss with AX-CAPTM Technology while still meeting IEC61010-1 safety requirement
Want to know more about the FSB1x7H? Need any design support?
When it comes to lighting, efficiency and reliability are critical. Critical-conduction mode (CRM) power factor correction (PFC) controllers are available with two different control modes: current-mode and voltage-mode.
Though current mode controllers have been used for a while now, voltage mode controllers offer important advantages-particularly for applications-such as lighting, where high-efficiency low THD and high power factor are becoming more of a premium. The newest voltage-mode controllers designed for lighting applications are specifically designed to maintain good power factor, low THD at light loads, zero overshoot at turn on, and a PFC-ready pin for power sequencing of downstream converters. Also, the new voltage-mode devices are conveniently designed to have backwards compatibility with older current-mode designs. This allows some of the benefits of this voltage-mode controller to be implemented in older designs without layout changes.
The main difference between a voltage-mode and current-mode controller is how the controller decides when to turn off the power MOSFET. For the current-mode controller, the MOSFET is turned off when the inductor current sensed through the current-sense resistor meets the desired current reference. Another major difference between the current-mode and voltage-mode PFC controllers has to do with the placement of its compensation network.
The newest generation of voltage-mode PFC controllers, such as the FL7930C from Fairchild, has added a few important features, such as a soft-start feature with zero overshoot, internal THD optimizer, and a PFC-ready pin. The THD optimizer allows for improved total harmonic distortion, while reducing the number of external components required and frees up an external pin which is being used for the PFC ready function. The PFC-ready pin tells the downstream DC/DC converter that the output voltage is at 89% of the set-bus voltage, making power sequencing much easier.
However, there’s a lot more to it. Read the full article at EE Times Design to learn the differences between these two controllers, how voltage-mode improves reliability and efficiency, and more about the FL7930C.
This article, posted in Power Management DesignLine, was written by Alexander Craig, Principal Application Engineer, at Fairchild Semiconductor.
LED lighting continues to grow in popularity, with significant growth expected over the next several years, especially in residential lighting applications. One of the features commonly required in these applications is the ability to dim the lights.
Efficiently dimming LED lights in small spaces – small enough to fit existing sockets – is a challenge.
Fairchild’s latest LED lighting solution, the FL7701, provides designers:
High functional density in a small form factor
Up to 60 percent board space savings compared to other solutions
Up to 20 percent lower bill of material costs compared to other solutions
Digital power factor (PF) realization greater than 0.9
Lower total harmonic distortion (THD)
90 percent electrical efficiency
All of this results in an LED dimming solution that is ideal for interior decorating/ornamental lights, LED light bulbs or down lights in PAR, Reflector, MR or classic styles E26/E27 or Bi-Pin base, as well as LED lamps for low power lighting fixtures.
Want to know more about Fairchild’s complete line of LED lighting solutions? Check out our website at:
Designers facing the challenge of creating a flyback circuit for their applications’ power supply now have a tool to help them complete their design faster, with no worries about bench prototypes or wondering if it will work.
Whether you’re a rookie or seasoned veteran, Power Supply WebDesigner (PSW) – a powerful (no pun intended) new online design and simulation tool from Fairchild Semiconductor – allows you to throw away the application note and “Auto Complete” a design, or optimize a design like a power supply expert.
PSW is an easy-to-use, powerful online design tool that provides:
A complete flyback design including selection of the optimum Fairchild controller with integrated MOSFET
steady-state and transient waveforms, as well as the loop-gain plot showing stability margins
A complete bill of materials (BOM) and distributor parts order
Simulation functionality that helps designers fine tune their design without building a bench prototype
From user-specified design inputs, the Power Supply WebDesigner tool allows designers to choose all the components used in a design including MOSFET, diodes, transformer, snubber circuit, output filter(s), AC input circuit, resistors and capacitors, or have the tool automatically recommend the design values – providing Fairchild part numbers where applicable. PSW also can allow the user to evaluate their component choices.
We invite you to take a minute to explore the PSW tool. You can use the tool at Power Supply WebDesigner.
After you have taken it for a spin, let us know what you think and contact us:psw@fairchildsemi.com
Research is ongoing for a more efficient DC-ARC welding machine that combines low voltage with a large current. Various topologies are possible, but the Half Bridge is the most commonly used for a small capacity (under 230A) welding machine. When compared to a Full-Bridge topology with the same power rating, a Half Bridge design requires a greater amount of transformer wiring and a higher current capacity at the inverter. However, a Half-Bridge offers all the advantages of a simpler topology involving fewer components. In this case, data was acquired using an evaluation board with an output current of 140A and output voltage of 26V. The switching frequency was 20KHz.
When designing a welding machine, any temperature increase created by the duty cycle, for example at the transformer, should be within a set limit, if you want to avoid burning out the power supply. The duty cycle is expressed as a period of use at a rated output current during a period of 10 minutes. A 40% cycle, for example, would allow 4 minutes of use (at a rated output current of 140A), with 6 minutes for idling and cooling off.
An IGBT (Insulated Gate Bipolar Transistor), a voltage-controlled power transistor, was selected because of its superior performance to that of other bipolar transistors. It is a more cost-effective solution in applications where high current is combined with a high switching speed, and where the design goal is to reduce total device cost while optimizing thermal performance.
When the welder is operating, loss can be either a loss in conduction or a loss in switching (power on/off). There is a trade-off between the Vce(sat) and switching loss. If Vce(sat) is high, switching loss is low and vice versa. We concluded that the FGH40N60SMD (Field Stop Gen2), from Fairchild, showed faster switching characteristics at a lower Vce(sat), plus lower turn-off loss than alternative solutions.
When selecting the second rectifier diode for a welding machine, a lower Vf, Irr, and Trr would be ideal, but because there is a trade-off between Vf and Trr, designers should consider Vf and the reverse recovery characteristics of the diode. Generally, the second rectifier diode of a welding machinehas a bigger conduction loss than the reverse recovery loss; therefore, we can conclude that Vf value is more important. For this reason, ultrafast diode FFA60UP30DN (30A dual diode), from Fairchild, was selected for this evaluation board.
You can simplify design complexity and increase your energy-efficiency in limited PCB space with Fairchild’s low-, mid- and high- power LED Lighting solutions. Benefits for your designs include an extended system life, reduced lifetime costs, and ability to meet the most stringent global energy regulations. Typical applications include LED lighting strips, desk lamps, HID street lighting, medical lighting, mobile display and much more. Watch this video to lean how to simplify your designs.
Smart power switches help reduce losses up to 25% and allow the use of compact control solutions for BLDC motors.
Energy saving drives with brushless DC motors can be found everywhere, and the dust has settled somewhat, since the challenge consists of integrating a complex electronic control circuit into the motor, at realistic cost levels, to enable relevant advantages for the user. New power switch technologies can help, since they reduce losses and allow higher power density, enabling many savings.
We believe that further functionality will find its way into future smart power modules, and they will become even smarter. One possible approach is to integrate the control ICs, but additional protection functions or other power electronics components are possible. The key technology to enable these additions is a robust and flexible multichip packaging technology, as realized with Fairchild’s SPM® modules.
This article, posted on Electronic Products magazine, was written by Alfred Hesener, senior director of applications and marketing. Share your thoughts about smart power modules, or tell us your prediction for the future!
Can you name some of the things that power design engineers are always on the lookout for?
If you said simple designs, high reliability, and high performance, you’d be correct. To address these needs, the FSL1x6 series of green-mode Fairchild Power Switch (FPSTM) devices offer increased reliability while exceeding today’s energy saving regulations.
High Reliability:
Reliability is a key factor, and the FSL1x6 series has abundant protection features including OCP, OVP, OLP, AOCP, and TSD with rugged SenseFET. When compared to a discrete MOSFET and controller solution, the FSL1x6 series reduces total component count, overall design size and weight, while increasing efficiency, productivity and system reliability. Last but certainly not least, customers want high performance without sacrificing energy savings, so the series has low standby power and good EMI.
Simple Designs:
The FSL1x6 series reduces total component count, overall design size and weight, while increasing efficiency, productivity and system reliability when compared to a discrete MOSFET and controller solution,. These built-in protection features eliminate the need for external components, simplify designs and reduce bill of materials.
What about energy savings?
Certainly today’s market is very aware of power saving applications, and Fairchild’s FSL1x6 series is no different. The devices achieve standby power of <50mW@230ac beating the Energy Star’s requirement of <300mW. The average standby power for systems in this segment is around 150mW ~ 200mW and going lower.
This series of devices are ideal for consumer electronics such as VCRs/DVD players, set-top boxes, and home appliances such as washing machines and dishwashers.
They are part of a comprehensive portfolio of Green Mode Fairchild Power Switch (FPSTM) devices. This FSL1x6 series helps designers meet the engineering challenges they face by providing the technology and process advancements that result in increased performance and functional integration.
What are some of the power designs challenges you face?
mWSaver™ Technology combines our most energy efficient process and circuit technologies for power adapter design into a unique group of components, offering the ability to lower power dissipation for external components such as resistors, capacitors, inductors and rectifiers, and excellent efficiency ratings at full load. Applications include netbooks, handheld power tools, gaming devices, cordless phones and digital cameras. Learn more about Fairchild’s mWSaver™ Technology by watching this video:
Saving energy while maintaining a small carbon footprint is of global concern today. Reducing environmental pollution to avoid climate change, optimizing energy efficiency, and conserving resources are just a few topics on the global agenda. If we all adopted the use of high efficiency motors and optimized controls, our dependency could be significantly lower.
According to research by the Electric Power Research Institute (EPRI), motors account for 51% of the world’s total energy consumption, at an annual cost of 95 billion U.S. dollars. The energy consumed by other sectors is comparatively lower. Lighting, for example, accounts for 19%, cooling and heating 16%, and Information Technology 14%. Clearly, there is a market necessity for an efficient and robust brushless DC motor controller—-the wave of the future. Fairchild Semiconductor offers advanced calculation tools that optimize efficiency, simplify the design process, and shorten time-to-market.
In fact, motors consume the most energy, no matter what the scenario – household or commercial – in which they are being used. In 2007the total electric power consumption of Taiwan was 117.2 billion KWH. Of that, motors consumed 82 billion KWH, accounting for 70% of the total. More energy efficient motors offer a significant savings in energy consumption.
Household appliances account for much of the energy used in the world, especially in North America. Motors used in these household appliances are categorized by type: AC or DC. DC can be categorized further to be brushed or brushless (BLDC). Recent years have brought about breakthroughs in technology and the production of BLDC motors. These motors are powerful, compact, and maintenance-free.
In comparison to other types of motors, such as AC and brushed DC, BLDC motors offer a higher level of technology and hence deliver higher value. Given the twin pressures to reduce energy consumption and protect the environment, BLDC motors are inevitably becoming the favored solution.
BLDC motors can be driven using several control schemes. Fairchild’s FCM8201 and FCM8202 motor controllers support both the most common and most acoustically quiet 3-phase modulation schemes: Trapezoidal and Sinusoidal. The controllers can selectively or automatically switch between these two schemes as required to optimally drive the connected motor. The FCM8201 and FCM8202 also includes several protective features which simplify the design of robust control circuitry with no software development required.
The FCM8201 and FCM8202 are capable of stand-alone operation with minimal discrete components. The FCM8201 has an on-board SPI interface which can be easily connected to an attached microcontroller. Such configurations allow the engineer to focus software development time and resources on the key aspects of the product being designed by offloading the motor control tasks to the FCM8201.
Detailed datasheets, thorough application notes, and powerful evaluation boards are available to support engineers interested in the fastest time-to-market while supporting leading-edge green technology.
Designers need long-term reliability from their automotive power train and power steering solutions. At PCIM Europe 2011, 17-19 May, Fairchild will highlight automotive power train solutions for power steering applications that provide the robust reliability required for these applications.
Fairchild experts will discuss automotive power module solutions that can lower field failure rates and address the thermal issues encountered in everyday use.
Fairchild solutions on display at the show include automotive power modules for power steering with the capability of 40V/160A using a six MOSFET module. In comparison, a D2PAK can only support 180A at 25°C. These modules also offer high power cycling capability due to special module package construction.
Fairchild provides standard and customized automotive power modules for voltage levels ranging between 12V and 1200V and current levels up to and beyond 160A. Fairchild’s modules are specifically designed, manufactured and tested to operate in harsh automotive environment and meet or exceed the industry toughest reliability and quality requirements. They perform reliably in all kinds of automotive environment including under-the-hood applications.
Fairchild Semiconductor power modules play significant role in optimizing the power management in the newest and future generations of vehicles, contributing to fuel saving and environmental pollution reduction.
Fairchild is committed to helping designers meet the engineering challenges through technology and process advancements that result in increased performance and functional integration as well as design support resources that minimize components while reducing engineering time.
PCIM Europe, held in Nuremberg, 17-19 May, is Europe’s premiere venue for experts in power electronics and its applications in Intelligent Motion and Power Quality.
Join us at PCIM Europe, in Hall 12, booth 601, to see our extensive portfolio of power solutions!
Fairchild Semiconductor: The Right Technology for Your SuccessTM.
Can’t make it to the show? Follow us on Twitter to catch the latest from the show floor. And, register to receive our PowerParcel, containing the latest information on Fairchild’s solutions from PCIM Europe.
At PCIM Europe 2011, 17-19 May, Fairchild will highlight a complete solution for LED street lighting applications that can help designers shorten their time to market.
This ready-made circuit includes the:
FSFR series of LLC controllers with integrated MOSFETs that combine the highest efficiency at the lowest EMI level by operating in ZVS mode over the entire power range
Providing additional flexibility, the PFC block of this LED street lighting solution can be replaced at higher power levels by the FAN9612, which features an interleaved PFC circuit. The solution also offers six independent buck stages at the output.
The FSFR series includes devices like the FSFR2100. A highly integrated power switch designed for high-efficiency half-bridge resonant converters, the FSFR2100 combines power MOSFETs with fast-recovery type body diodes, a high-side gate-drive circuit, an accurate current controlled oscillator, frequency limit circuit, soft-start, and built-in protection functions.
Fairchild experts will also highlight how using the zero-voltage-switching (ZVS) technique dramatically reduces the switching losses and how efficiency is significantly improved. The ZVS also reduces the switching noise noticeably, which allows a small-sized Electromagnetic Interference (EMI) filter.
Fairchild is committed to helping designers meet the engineering challenges through technology and process advancements that result in increased performance and functional integration as well as design support resources that minimize components while reducing engineering time.
PCIM Europe, held in Nuremberg, 17-19 May, is Europe’s premiere venue for experts in power electronics and its applications in Intelligent Motion and Power Quality.
Join us at PCIM Europe, in Hall 12, booth 601, to see our extensive portfolio of power solutions!
Fairchild Semiconductor: The Right Technology for Your SuccessTM.
Can’t make it to the show? Follow us on Twitter to catch the latest from the show floor. And, register to receive our PowerParcel, containing the latest information on Fairchild’s solutions from PCIM Europe.
Energy efficiency continues to drive electrical standards and designs in inverter motor based applications. As a result, Fairchild has developed a complete family of SPM® modules that eliminate external components and increase system reliability. These modules integrate drive and protection components in a single package so you simplify and accelerate your designs as you optimize efficiency.
At PCIM Europe 2011, 17-19 May, Fairchild will highlight the SPM5 series. These devices can provide higher efficiency as well as improved reliability to automotive and motor designs.
The SPM5 series feature built-in Bootstrap Diodes and Gate Drivers in a very small package (29mm x 12mm). These devices can operate up to 80W without a heatsink and up to 200W with a heatsink. Additionally, these devices offer less on-state and switching losses and increased short-circuit withstand time compared with IGBT-based solutions. The SPM5 series of devices is available in through-hole and “pick-and-place” SMD packages for greater design flexibility.
Fairchild is committed to helping designers meet the engineering challenges through technology and process advancements that result in increased performance and functional integration as well as design support resources that minimize components while reducing engineering time.
PCIM Europe, held in Nuremberg, 17-19 May, is Europe’s premiere venue for experts in power electronics and its applications in Intelligent Motion and Power Quality.
Join us at PCIM Europe, in Hall 12, booth 601, to see our extensive portfolio of power solutions!
Fairchild Semiconductor: The Right Technology for Your SuccessTM.
Can’t make it to the show? Follow us on Twitter to catch the latest from the show floor. And, register to receive our PowerParcel, containing the latest information on Fairchild’s solutions from PCIM Europe.
For designers who need to improve system efficiency and minimize components in motor drive applications, robustness and reliability are important factors. At PCIM Europe 2011, 17-19 May, Fairchild will highlight 40V – 150V, mid-voltage PowerTrench® MOSFET solutions that provide high robustness (UIS) and excellent body diode performance.
These devices are part of the mid-voltage power MOSFET portfolio and are optimized power switches that combine a small gate charge (QG), a small reverse recovery charge (Qrr) and a soft reverse recovery body diode, which allows for fast switching for synchronous rectification in AC-DC power supplies.
These devices employ a shielded-gate structure that provides charge balance. By using this technology, the figure of merit (QG x RDS(ON)) is 66 percent lower than previous solutions, providing designers a high efficiency solution for their applications.
Fairchild is committed to helping designers meet the engineering challenges through technology and process advancements that result in increased performance and functional integration as well as design support resources that minimize components while reducing engineering time.
PCIM Europe, held in Nuremberg, 17-19 May, is Europe’s premiere venue for experts in power electronics and its applications in Intelligent Motion and Power Quality.
Join us at PCIM Europe, in Hall 12, booth 601, to see our extensive portfolio of power solutions!
Fairchild Semiconductor: The Right Technology for Your SuccessTM.
Can’t make it to the show? Follow us on Twitter to catch the latest from the show floor. And, register to receive our PowerParcel, containing the latest information on Fairchild’s solutions from PCIM Europe.
Design engineers working with industrial communication designs need to transmit high speed data over the communication fieldbus without the risk of damaging sensitive controllers, ADCs or sensors. At PCIM Europe 2011, 17-19 May, experts from Fairchild Semiconductor will discuss how current solutions fall short of providing the desired level of reliable isolation and immunity to EMI.
Fairchild experts will discuss how the capabilities of the FOD8012 – an industry-first, full duplex, bi-directional, logic gate optocoupler with high noise immunity as well as proven, reliable optical isolation – are ideal for industrial fieldbus communications, programmable logic control, and servo control, as well as inverter, factory automation, process control and test and measurement applications.
The FOD8012 supports isolated communications of digital signals between systems without conducting ground loops or hazardous voltages. Unlike competitive devices which provide less than 0.1mm optical isolation gap, the FOD8012 features a 0.4mm (minimum) optical isolation gap for proven, reliable isolation. The device also uses proprietary Optoplanar® packaging technology and optimized IC design to achieve high common mode rejection (CMR) of 20kV/µs minimum, allowing the device to operate in noisy industrial environments.
Fairchild is committed to helping designers meet the engineering challenges through technology and process advancements that result in increased performance and functional integration as well as design support resources that minimize components while reducing engineering time.
PCIM Europe, held in Nuremberg, 17-19 May, is Europe’s premiere venue for experts in power electronics and its applications in Intelligent Motion and Power Quality.
Join us at PCIM Europe, in Hall 12, booth 601, to see our extensive portfolio of power solutions!
Fairchild Semiconductor: The Right Technology for Your SuccessTM.
Can’t make it to the show? Follow us on Twitter to catch the latest from the show floor. And, register to receive our PowerParcel, containing the latest information on Fairchild’s solutions from PCIM Europe.
Solar inverter designers want a solution that improves grid reliability by functioning not only at full solar output power, but also during grid short conditions, as well as reactive output power with minimal reduction in efficiency and maximum noise immunity with minimum current consumption. At PCIM Europe 2011, 17-19 May, Fairchild will highlight system-specific solutions that offer important building blocks for the power supply stage of a solar inverter.
At the show, experts will discuss 200V-1000V reference designs for internal power supplies for renewable energy systems using power transistors with blocking voltage capabilities >1550V, the 600V Fieldstop IGBT series optimized for supporting reactive output power, and the FOD318x series of gate drive optocouplers that provide minimum current consumption at maximum noise immunity and maximum drive current.
Fairchild is committed to helping designers meet the engineering challenges through technology and process advancements that result in increased performance and functional integration as well as design support resources that minimize components while reducing engineering time.
PCIM Europe, held in Nuremberg, 17-19 May, is Europe’s premiere venue for experts in power electronics and its applications in Intelligent Motion and Power Quality.
Join us at PCIM Europe, in Hall 12, booth 601, to see our extensive portfolio of power solutions!
Fairchild Semiconductor: The Right Technology for Your SuccessTM.
Can’t make it to the show? Follow us on Twitter to catch the latest from the show floor. And, register to receive our PowerParcel, containing the latest information on Fairchild’s solutions from PCIM Europe.
Part of a continuing focus on solutions for embedded DC-DC power supply designs at PCIM Europe 2011, 17-19 May, Fairchild Semiconductor will showcase technology that protects the system by limiting the current flowing through an output, preventing failure in short circuit conditions.
At the show, Fairchild experts will discuss the AccuPowerTM load switch series. This family of current limiting load switches provides full protection to systems and loads that may encounter large current conditions. The series contains a slew rate controlled N-Channel MOSFET which limits the amount of in-rush current. This protects from abnormalities on the main power supply rails.
Devices in the AccuPower series of load switches include the FPF2700, FPF2701 and FPF2702. Unlike current solutions that require discrete MOSFETs plus external protection circuitry, devices in the AccuPower series of load switches feature built-in protections to eliminate as many as four additional devices, which saves over 70 percent board space. The switches in this family also feature under-voltage lock-out (UVLO) protection and thermal shutdown protection. Switch control is completed by a logic input (ON) capable of interfacing directly with the low voltage control signal. When the switch current reaches the current limit, the device operates in a constant-current mode to prohibit excessive currents from causing damage.
Fairchild is committed to helping designers meet the engineering challenges through technology and process advancements that result in increased performance and functional integration as well as design support resources that minimize components while reducing engineering time.
PCIM Europe, held in Nuremberg, 17-19 May, is Europe’s premiere venue for experts in power electronics and its applications in Intelligent Motion and Power Quality.
Join us at PCIM Europe, in Hall 12, booth 601, to see our extensive portfolio of power solutions!
Fairchild Semiconductor: The Right Technology for Your SuccessTM.
Can’t make it to the show? Follow us on Twitter to catch the latest from the show floor. And, register to receive our PowerParcel, containing the latest information on Fairchild’s solutions from PCIM Europe.
Focusing on solutions for embedded DC-DC power supply designs, Fairchild Semiconductor will showcase solutions that increase power density and solve thermal issues in DC-DC converters at PCIM Europe 2011, 17-19 May.
Among the solutions to be demonstrated at the show are MOSFETs using Fairchild’s Dual CoolTM packaging technology, which features an exposed heat slug that delivers a significant reduction in thermal resistance from junction to top-of-case, resulting in more than 60 percent higher power dissipation capability than standard PQFN packaging when a heat sink is mounted. Additionally, MOSFETs in the Dual Cool package are designed with proprietary PowerTrench® process technology that enables lower RDS(ON) and higher load currents in smaller package sizes.
Knowing that designers of DC-DC power supplies, motor control, hot swap and load switch applications, as well as secondary synchronous rectification for servers, also need MOSFETs with lower conduction and switching losses in order to raise efficiency in their designs, Fairchild will discuss solutions from the mid-voltage MOSFET portfolio, including the FDMS86500L N-Channel, PowerTrench MOSFET. This device is designed specifically to minimize conduction loss, switch node ringing, and to improve the overall efficiency of DC-DC converters. Additionally, the FDMS86500L, using shielded-gate MOSFET technology, provides very low switching losses (Qgd 14.6 nC Typ.). When combined with the device’s low conduction losses, this provides designers the improved power density they need.
Fairchild is committed to helping designers meet the engineering challenges through technology and process advancements that result in increased performance and functional integration as well as design support resources that minimize components while reducing engineering time.
PCIM Europe, held in Nuremberg, 17-19 May, is Europe’s premiere venue for experts in power electronics and its applications in Intelligent Motion and Power Quality.
Join us at PCIM Europe, in Hall 12, booth 601, to see our extensive portfolio of power solutions!
Fairchild Semiconductor: The Right Technology for Your SuccessTM.
Can’t make it to the show? Follow us on Twitter to catch the latest from the show floor. And, register to receive our PowerParcel, containing the latest information on Fairchild’s solutions from PCIM Europe.
At PCIM Europe 2011, 17-19 May, experts from Fairchild Semiconductor will address the designers need for embedded DC-DC solutions that provide high efficiency at full and light load conditions while solving thermal issues, increasing power density and meeting space constraints in their power supply designs.
Fairchild Semiconductor’s DrMOS, the FDMF67xx Series, will be among the many solutions highlighted at the show. Offering a complete family of fully optimized, integrated FET plus Driver multi-chip power stage modules designed for multiple synchronous Buck converter applications, Fairchild’s portfolio is able to meet different customer and application needs.
In addition, newly released Generation II XSTM DrMOS [Integrated Driver + MOSFET] devices offer high efficiency and power density to enable designers to meet specific design needs for various applications. Generation II XS DrMOS devices, available in a small, 6mm x 6mm high performance clip PQFN package, feature higher system efficiency with over 91.5 percent heavy load efficiency at 12Vin, 1Vout, and 25A, and 94 percent peak efficiency. Generation II XS DrMOS can be operated at a 2MHz switching frequency and have up to 50A of current handling capability.
Fairchild is committed to helping designers meet the engineering challenges through technology and process advancements that result in increased performance and functional integration as well as design support resources that minimize components while reducing engineering time.
PCIM Europe, held in Nuremberg, 17-19 May, is Europe’s premiere venue for experts in power electronics and its applications in Intelligent Motion and Power Quality.
Join us at PCIM Europe, in Hall 12, booth 601, to see our extensive portfolio of power solutions!
Fairchild Semiconductor: The Right Technology for Your SuccessTM.
Can’t make it to the show? Follow us on Twitter to catch the latest from the show floor.
We’re thrilled to be attending this year’s electronica China, in the Shanghai New International Expo Center, between 15 – 17 March. At the show, we’ll be demonstrating a variety of AC-DC power supplies, like the FAN7382, in the Fairchild Semiconductor booth, 1310.
The FAN7382 is a monolithic half-bridge gate driver IC which can drive MOSFETs and IGBTs that operate up to +600V. Our high-voltage process and common-mode noise canceling technique provides stable operation of the high-side driver under high dv/dt noise circumstances.
At the show, we will demonstrate how an advanced level shift circuit allows high-side gate driver operation up to VS = -9.8 V (typ.) for VBS = 15V. The input logic level of the FAN7382 is compatible with standard TTL-series logic gates. UVLO circuits for both channels prevent malfunction when VCC and VBS are lower than the specified threshold voltage. Output drivers typically source/sink 350mA/650mA, respectively, which is suitable for fluorescent lamp ballasts, PDP scan drivers, motor controls, etc.
Fairchild is dedicated to providing diverse power products that are smaller than ever, and increasingly more energy efficient, in order to meet designer needs and ultimately, consumer demands. Fairchild has a vast array of products and families available including the Fairchild Power Switch (FPSTM) series, High Voltage Gate Driver IC products (HVIC), PWM Controllers such as the FSEZ1317 and PFC controllers such as the FAN7930, as well as broad MOSFET portfolio up to 600V and IGBTs. With these products and more, Fairchild is committed to making technology that fits the needs of engineers.
We invite you to our booth, 1310, at electronica China to see AC-DC power supplies like the FAN7382 and much more! Is this a solution that would be helpful to your designs?
Fairchild Semiconductor: The Right Technology for Your Success™
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Come to electronica China to learn more about solutions for AC-DC Power Supplies at the Fairchild Semiconductor booth, number 1310.
Fairchild Semiconductor is dedicated to providing diverse power products that are smaller than ever, and increasingly more energy efficient, in order to meet designer needs and ultimately, consumer demands. Fairchild has a vast array of products and families available including the Fairchild Power Switch (FPSTM) series, High Voltage Gate Driver IC products (HVIC), PWM Controllers such as the FSEZ1317 and PFC controllers such as the FAN7930, as well as broad MOSFET portfolio up to 600V and a family of high performanceIGBTs that offer superior conduction and switching performances with voltage ranges up to 1500VWith these products and more, Fairchild is committed to making technology that fits the needs of engineers.
At Fairchild, we always appreciate an opportunity to demonstrate our solutions and show engineers the tangible ways we can help improve their designs. We invite you to visit our booth, 1310, at this year’s electronica China to learn more about our AC-DC power supplies and how they can contribute to your success. What types of products would you like to see?
Fairchild Semiconductor: The Right Technology for Your Success™
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mWSaver technology from Fairchild offers the best-in-class power savings for power supplies, with the fewest possible components. mWSaver technology integrates five patented technologies: off time modulation, JFET HV start-up and circuit, feedback impedance switch, HV discharge, and PSR control to drop out voltage; as well as burst mode operation and low operation current techniques. It is only by the unique integration of these technologies, leveraged together, that the most stringent standby specifications can be met.
While the best power supplies are more than 90 percent efficient, some are only 20 to 40 percent efficient, wasting the majority of electricity that passes through them. Power supplies can account for nearly 10 percent of the total residential electricity used yearly. Regulations and technology help to reduce standby power, but the increase in the number of appliances and equipment that consumes power continues to grow, especially in developing countries.
Once again, we’d like to invite you to visit the Fairchild booth, 1310, at electronica China to learn more about our mWSaver technology. If there is a specific product you are interested in seeing at electronica China, be sure to let us know!
Fairchild Semiconductor: The Right Technology for Your Success™
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Come to electronica China to learn more about Fairchild Semiconductor solutions for the automotive industry at booth 1310.
Fairchild provides standard and customized Automotive Power Modules for applications such as brushless DC motor control in Electrical Power Steering (EPS) and Electrohydraulic Power Steering (EHPS), Transmission Control, HVAC and DC-DC converters, and Solid State Switches for voltage levels between 12V and 600V and current levels up to and beyond 160A. Some features and benefits include low total module electrical resistance, optional built-in gate drivers, and optional integration of passive components.
We invite you to visit our booth, 1310, at electronica China to learn more about automotive solutions from Fairchild. If there is a specific product you are interested in seeing at electronica China, be sure to let us know!
Fairchild Semiconductor: The Right Technology for Your Success™
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Fairchild Semiconductor is committed to energy savings and creating solutions that meet the most stringent regulations. Thus, Fairchild solutions for all lighting applications, including LED, have been developed to maximize performance while reducing board space, design complexity and system costs. In addition, our Global Power ResourceSM Center(GPRC), comprised of online tools, FAEs and regional centers staffed by power engineers, is the industry standard for customer design support.
For LED lighting applications, the Fairchild portfolio of PSR PWM controllers achieve the most accurate CC through built-in, proprietary TRUECURRENT™ technology and tight CV without secondary-side feedback circuitry. Constant Current (CC) allows the device to accommodate different numbers of LED units in a string, increasing design flexibility, stretching the lifetime of HB LEDs and reducing time to market.
The Fairchild PSR PWM controller portfolio, including the FSEZ1307, FSEZ1317 and FAN103, enhance the company’s extensive power offerings that enable efficient electronics, and maximize energy savings in power-sensitive applications such as power adapters, power supplies, lighting applications, computers, industrial controls and home appliances.
Booth 1310 at electronica China will be presenting live demos of a wide array of Fairchild products!
Fairchild Semiconductor: The Right Technology for Your Success™
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Come to electronica China to learn more aboutMotor Drive solutions from Fairchild Semiconductor at booth 2J19 and see demos on DC-Motor with SPM® modules SPM45H series and BLDC with SPM modules.
One area Fairchild will be highlighting is its Smart Power Module (SPM®) and Motion-SPM™ technology. Among these is the SPM45H, a 600V/5A~20A / Full Protection device in smaller package than previous offerings. It has a broad range of power components and supports for motor control design in consumer and industrial applications including Fairchild motion-control smart power module devices and IGBTs.
Newly developed by Fairchild, SPM modules are an advanced motion-control smart power module designed to provide very compact and high performance for BLDC motor drives mainly targeting low ~ middle power inverter-driven application like air conditioner and washing machine. The new µMini DIP SPM® package can achieve 40% reduction in size and improved reliability as compared with existing Mini DIP SPM package. This is achieved by applying new three-in-one HVIC, new IGBT of advanced silicon technology, and improved ceramics substrate base transfer mold package. And it combines optimized circuit protection and drive matched to low-loss IGBTs with the integrated under voltage, short-circuit protection, and temperature monitoring. Each phase current of inverter can be monitored separately due to the divided negative dc terminals for support Vector control. The SPM45H series will fully support for your application with high reliability & performance.
In addition to SPM technology, the company will also discuss products such as its three-phase sinusoidal brushless DC (BLDC) motor controllers like the FCM8201 and FCM8202. Using the Hall sensor signals, the control system on these products is able to execute the PWM commutation by switching the three-phase inverter. There are two PWM modes for selection: Sine-Wave Mode and the Square-Wave Mode. Square-Wave Mode includes PWM-PWM and PWM-ON approaches to improve the efficiency of the motor drive. Protection functions including over-voltage, over-current, over-temperature, and short circuit prevent the control circuits and the motor from being damaged, particularly under stressed applications and demanding environments. Both the FCM8201 and the FCM8202 can be operated stand-alone or worked with microcontrollers for advanced BLDC motor control.
Fairchild is committed to making technology that fits the needs of engineers. We invite you to visit our booth, 1310, at this year’s electronica China to learn more about our Motor products and how they can contribute to your success. If there is a specific product you are interested in seeing at electronica China be sure to let us know!
Fairchild Semiconductor: The Right Technology for Your Success™
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Engineers interested in power solutions can drop by the Fairchild booth (1310) at electronica China where we’ll be showcasing the FAN7930, and other solutions supporting 200W LLC power supplies. The FAN7930 is an active PFC controller for boost PFC applications that operate in critical conduction mode.
This device is ideal for LCD and PDP TV applications, as well as for applications using less than 200W where PFC is mandated, including Class C lighting equipment greater than 25W, and Class D PC, TV and monitors greater than 75W.
Fairchild is dedicated to providing diverse power products that are smaller than ever, and increasingly more energy efficient, in order to meet designer needs and ultimately, consumer demands. Fairchild has a vast array of products and families available including the Fairchild Power Switch (FPSTM) series, High Voltage Gate Driver IC products (HVIC), and DC-DC conversion solutions such as Dual Cool™ packaged MOSFETs, PowerTrench® MOSFETs, and TinyBuck™ regulators. With these products and more, Fairchild is committed to making technology that fits the needs of engineers.
To learn more about products like these and other Fairchild solutions, come to, Booth 1310 at electronica China!
Fairchild Semiconductor: The Right Technology for Your Success™.
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This year at electronica China, Fairchild will be demonstrating a variety of AC-DC power supplies, such as the FAN6204 in the Fairchild Semiconductor booth, 1310.
The FAN6204 is a secondary-side synchronous rectification (SR) controller to drive SR MOSFET for improving efficiency. The IC is suitable for flyback converters and forward free-wheeling rectification.
The FAN6204 can be applied in continuous or discontinuous conduction mode (CCM and DCM) and quasi-resonant (QR) flyback converters based on the proprietary innovative linear-predict timing-control technique. The benefits of this technique include a simple control method without current-sense circuitry to accomplish noise immunity.
With PWM frequency tracking and secondary-side winding voltage detection, the FAN6204 can operate in both fixed- and variable-frequency systems. Additionally, when in Green Mode, the SR controller stops all SR switching operation to reduce the operating current. Power consumption is maintained at minimum level in light-load condition.
Fairchild is dedicated to providing diverse power products that are smaller than ever, and increasingly more energy efficient, in order to meet designer needs and ultimately, consumer demands. Fairchild has a vast array of products and families available including the Fairchild Power Switch (FPSTM) series, High Voltage Gate Driver IC products (HVIC), PWM Controllers such as the FSEZ1317 and PFC controllers such as the FAN7930, as well as broad MOSFET portfolio up to 600V and IGBTs. With these products and more, Fairchild is committed to making technology that fits the needs of engineers.
We invite you to our booth, 1310, at electronica China to see AC-DC power supplies like the FAN6204 and much more! Is this solution something you’d be interested in for your designs?
Fairchild Semiconductor, the Right Technology for Your SuccessTM.
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If you’re going to electronica China 2011 and are interested in LLC resonant converters for power supplies, you should swing by the Fairchild booth – 1310 – where we’ll be displaying products such as the FSFR2100.
The FSFR2100 is a highly integrated power switch designed for high-efficiency LLC half-bridge resonant converters. Offering everything necessary to build a reliable and robust resonant converter, the FSFR2100 simplifies designs and improves productivity, while improving performance.
The FSFR2100 combines power MOSFETs with fast-recovery type body diodes, a high-side gate-drive circuit, a frequency limit circuit, soft-start, and built-in protection functions. The high-side gate-drive circuit has a common-mode noise cancellation capability, which guarantees stable operation with excellent noise immunity.
The fast-recovery body diode of the MOSFETs improves reliability against abnormal operation conditions, while minimizing the effect of the reverse recovery. Using the zero-voltage-switching (ZVS) technique dramatically reduces the switching losses and efficiency is significantly improved. The ZVS also reduces the switching noise noticeably, which allows a small-sized Electromagnetic Interference (EMI) filter.
To see the FSFR2100, visit the Fairchild booth – Booth 1310!
Fairchild Semiconductor: The Right Technology for Your Success™.
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Come to electronica China 2011, in the Shanghai New International Expo Center, between 15 – 17 Marchto learn more about Power Solutions from Fairchild Semiconductor at booth 1310.
Among the many areas that Fairchild will be highlighting at electronica China are Fairchild High Voltage Gate Driver ICs, which provide improved noise immunity and performance.
Power engineers designing motor and industrial applications such as motor drive inverters, distributed power supplies and telecom system power supplies, need a high voltage gate driver solution that provides improved noise immunity and increased performance, while being pin-compatible to solutions currently available.
Fairchild Semiconductor meets these needs by offering designers new choices in high voltage gate drive ICs, including the FAN7392, a 2-input, 2-output / high and low side gate driver with shutdown function, the FAN7393, a 1-input, 2-output / half bridge with shutdown and controllable dead time, the FAN73932, a 1-input, 2-output / half bridge with shutdown and fixed dead time control and the FAN73933, a 2-input, 2-output / half bridge with controllable dead time.
These devices provide improved noise immunity over competitive solutions, and are part of the FAN739x series which features an innovative common-mode dv/dt noise canceling circuit that enables stable operation of the high voltage gate driver under high dv/dt noise circumstances. The devices also feature an advanced level shift circuit that offers high-side gate driver operation with negative VS swings of up to -9.8V (at VBS = 15V), where Vs is the high voltage floating supply return and VBS is the high side floating supply voltage.
Fairchild is a leading source of analog and power IC innovation, providing a complete solution of high voltage gate drivers that combine IP building blocks with systems-level expertise to optimize energy efficient designs and deliver best-in-class.
Fairchild is committed to making technology that fits the needs of engineers. We invite you to visit our booth, 1310, at this year’s electronica China to learn more about the company’s Industrial products. If there is a specific product you are interested in seeing at electronica China be sure to contact us prior to the show.
Fairchild Semiconductor, the Right Technology for Your Success™.
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When you consider that cell phone chargers typically sit plugged in and unused most of the time, yet still drawing power from the grid, the problem facing design engineers is clear – how can standby power be reduced in these devices, thereby saving energy and meeting government regulations?
Visit the Fairchild booth, #209, at APEC 2011, to view a solution that meets this challenge by providing ultra-low standby power under 10mW for Charger applications.
The FAN302HL, a highly integrated PWM controller, includes several features that enhance the performance of general flyback converters. The constant-current control, proprietary topology enables simplified circuit designs without secondary feedback circuitry for battery-charger applications. A proprietary Burst-Mode function with low operation current minimizes standby power consumption.
The FAN302HL controller also provides several protections. Cycle-by-cycle current limiting ensures the fixed peak current limit level, even if a short circuit occurs. The gate output is clamped at 15V to protect the power MOS from high gate-source voltage conditions. If either VS OVP or internal OTP is triggered, the circuit enters Latch Mode until AC power is removed. Using the FAN302HL, a charger can be implemented with few external components and minimized cost, compared to a conventional design or a linear transformer.
Come to APEC 2011, booth 209, to learn more about the company’s innovative mWSaver™ technology offering best-in-class power savings for power supplies, with the fewest possible components.
Fairchild Semiconductor: The Right Technology for Your Success™.
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Come to booth 209 at APEC 2011 to learn more about Motor Drive solutions from Fairchild Semiconductor, where you can see demos on DC-Motor with SPM® modules and BLDC with SPM modules.
Appliance motors account for a significant portion of all electric energy consumption in a typical household. As a result, the industry is addressing this concern with new, energy efficient products. Semiconductor manufacturers are aiding in this transition with innovations in motor drives.
As they become more popular, inverter based systems are expected to be compact, have built-in control and a lower overall cost. Inverter drive modules meet those needs and are a conventional alternative to discrete-based inverters. Fairchild is addressing this need and has developed innovative motor solutions that ensure high efficiency, reliability, smaller packaging and greater design flexibility for energy-restricted applications. Fairchild has the motor drive solutions you need to significantly improve the performance/cost ratio of variable speed designs. The company has a broad range of power components and support for motor control design in consumer and industrial applications, including motion-control Motion-SPM™ smart power module devices and IGBTs.
At APEC 2011, Fairchild will be featuring two BLDC demos that will highlight our ability to easily create custom, integrated motor drive designs using our BLDC-tailored solutions, including products such as the FAN7382 and the FCM82xx. Fairchild will also highlight our SPM line-up, including the SPM45Hwhich is suitable for consumer appliance & industrial market with high reliability and performance.
Fairchild is committed to making technology that fits the needs of engineers. Come visit our booth, #209, at this year’s APEC to learn more about our Motor solutions and how they can contribute to your success. If there is a specific product you are interested in seeing at APEC 2011 be sure to let us know!
Fairchild Semiconductor: The Right Technology for Your Success™.
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In booth 209 at APEC 2011, Fairchild will discuss its AccuPower™ Load Switch Family. These switches are ideal for industrial, computing and portable designs. Participants can drop by Booth 2J19 and view this and the many other products that Fairchild will be exhibiting this year.
The AccuPower series is a family of current limiting load switches that provide full protection to systems and loads that may encounter large current conditions. The series contains a slew rate controlled N-Channel MOSFET which limits the amount of in-rush current. This protects from abnormalities on the main power supply rails.
Devices in the AccuPower series of load switches include the FPF2700, FPF2701 and FPF2702. Unlike current solutions in use today that require discrete MOSFETs plus external protection circuitry, devices in the AccuPower series of load switches feature built-in protections to eliminate as many as four additional devices, which saves over 70 percent board space. The switches in this family also feature under-voltage lock-out (UVLO) protection and thermal shutdown protection. Switch control is completed by a logic input (ON) capable of interfacing directly with the low voltage control signal. When the switch current reaches the current limit, the device operates in a constant-current mode to prohibit excessive currents from causing damage.
To learn more about the AccuPower™ Load Switch Family and other Fairchild technology, stop by our booth, #209 at APEC 2011!
Fairchild Semiconductor: The Right Technology for Your Success™.
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Next week at APEC 2011, we’ll be discussing some of our breakthrough technology. Those curious about our DC-DC Converter solutions are invited to see our new Low Voltage MOSFETs and learn more about our Dual Cool™ packaging technology.
Our Dual Cool package features an exposed heat slug that delivers a significant reduction in thermal resistance from junction to top of case, resulting in more than 60 percent higher power dissipation capability than standard PQFN packaging when a heat sink is mounted. Additionally, MOSFETs in the Dual Cool package are designed with the proprietary Fairchild Semiconductor PowerTrench® process technology that enables lower RDS(ON) and higher load currents in smaller package sizes.
Fairchild is dedicated to providing diverse power products that are smaller than ever, and increasingly more energy efficient, in order to meet designer needs and ultimately, consumer demands. Fairchild has a vast array of products and families available including the Fairchild Power Switch (FPSTM) series, High Voltage Gate Driver IC products (HVIC), and DC-DC conversion solutions such as Dual CoolMOSFETs, PowerTrench® MOSFETs, and TinyBuck™ regulators. With these products and more, Fairchild is committed to making technology that fits the needs of engineers.
To learn more about Dual Cool packaging technology and other power supply technology, come to booth 209 at APEC 2011!
Fairchild Semiconductor: The Right Technology for Your Success™.
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Planning to go to APEC 2011? Interested in motor drive solutions? Then the Fairchild booth (209) is a “must visit” to see our motion control solutions. You’ll be able to see a variety of our smart power modules (SPM®) that provide efficient motor control for energy-restricted white goods.
Fairchildhas the motor drive solutions you need to significantly improve the performance/cost ratio of variable speed designs. They have a broad range of power components and support for motor control design in consumer and industrial applications including Fairchild Motion-SPM™ smart power modules and IGBTs.
Energy efficiency continues to drive electrical standards and designs in inverter motor based applications. As a result, Fairchild has developed a complete family of SPM modules that eliminate external components and increase system reliability. These modules integrate drive and protection components in a single package so you simplify and accelerate your designs as you optimize efficiency.
To learn more our solutions for motion control, come to Booth 209 at APEC 2011!
Fairchild Semiconductor: The Right Technology for Your Success™.
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At APEC 2011, booth 209, Fairchild will demo the highly-integrated green-mode PWM controller, the FAN6755. Fairchild’s PWM controllers have several features that enhance the performance of flyback converters. For example, to minimize standby power consumption, a proprietary adaptive green-mode function reduces switching frequency at light-load condition. The minimum PWM frequency is set above 23kHz in order to avoid acoustic noise problems. This green-mode function enables the power supply to meet international power conservation requirements, such as Energy Star®.
The power loss caused by bleeding resistors is also eliminated due to the internal high-voltage startup circuitry. The FAN6755 uses the BiCMOS process, which allows an operating current of only 2mA resulting in less power consumption. The standby power consumption can be under 100mW for most of LCD monitor power supply designs.
Fairchild’s FAN6755 also integrates a frequency-hopping function that reduces EMI emission of a power supply with minimum line filters. Its built-in synchronized slope compensation achieves a stable peak-current-mode control and improves noise immunity. The proprietary, external line compensation ensures constant output power limit over a wide AC input voltage range from 90VAC to 264VAC.
There are also many protection functions that the FAN6755 provides. The internal feedback open-loop protection circuit protects the power supply from open feedback loop condition or output short condition. It also has line under-voltage protection (brownout protection) and over-voltage protection using an input voltage sensing pin (VIN).
Visit our booth at booth, #209, at APEC 2011 to learn more about our innovative PWM controller technologies.
Fairchild Semiconductor: The Right Technology for Your SuccessTM.
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Fairchild Semiconductor is dedicated to providing diverse power products that are smaller than ever, and increasingly more energy efficient, in order to meet designer needs and ultimately, consumer demands. At this year’s APEC 2011, we’ll be discussing the family of TinyBuck™ synchronous Buck regulators. This product family enables power designers to achieve higher output current and high efficiency using less PCB space.
The TinyBuckfamily of 3A, 6A and 8A fully-integrated, synchronous Buck converters improves efficiency over a wide input voltage range in a variety of applications including servers, telecommunications, computing and medical.
As an example, theFAN21SV06integrates a controller with optimized interconnects, synchronous MOSFETs and a bootstrap diode into one ultra-compact, 5mm x 6mm, MLP package and accepts input voltages from 6.5V to 24V. This configuration offers over 40% space savings compared to a discrete implementation and like other members of theTinyBuckfamily, the FAN21SV06provides up to 95% efficiency compared to alternative solutions. With this new device, designers can fulfill high-current requirements in a small area with minimal external components to save cost. The cost of input capacitors is also reduced due to an externally synchronizable clock with master/slave provisions.
The TinyBuckdevice also features a range of protection features including soft-start, Under- Voltage Lockout (UVLO), thermal shutdown, as well as over-voltage and over-current protection to guard against damage during fault conditions. A pre- bias startup takes place during soft-start conditions to regulate discharging of the output capacitor and protect the system ICs from damage. ATinyBuckreference design, the RD278, is also available to help designers develop highly efficient DC/DC conversion applications and bring those applications to market faster
We invite you to our booth, 209, at APEC 2011 to see power supplies like the FAN21xx and much more! Is this a solution that would be helpful to your designs?
Fairchild Semiconductor: The Right Technology for Your Success™.
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Today at IIC China, a variety of AC-DC power supplies, such as the FSL1x6 product series, were displayed in the Fairchild booth 2J19. These 650V power switches significantly improve standby power as well as light load efficiency due to no-load power consumption of less than 50mW. The adjustable peak current limit provides engineers with unparalleled ease of design coupled with an internal avalanche rugged 650V SenseFET for high robustness.
One product discussed was the FSL106MR integrated Pulse Width Modulator (PWM) and SenseFET – specifically designed for high-performance offline Switch-Mode Power Supplies (SMPS) with minimal external components. The FSL106MR includes integrated high-voltage power switching regulators that combine the previously mentioned avalanche-rugged SenseFET with a current-mode PWM control block.
The integrated PWM controller features include: Under-Voltage Lockout (UVLO) protection, Leading-Edge Blanking (LEB), a frequency generator for EMI attenuation, an optimized gate turn-on/turn-off driver, Thermal Shutdown (TSD) protection, and temperature-compensated precision current sources for loop compensation and fault protection circuitry. This device provides a basic platform that is well suited for the design of cost-effective flyback converters.
Fairchild is dedicated to providing diverse power products that are smaller than ever, and increasingly more energy efficient, in order to meet designer needs and ultimately, consumer demands. Fairchild has a vast array of products and families available including the Fairchild Power Switch (FPSTM) series, High Voltage Gate Driver IC products (HVIC), PWM Controllers such as the FSEZ1317 and PFC controllers such as the FAN7930, as well as broad MOSFET portfolio up to 600V and IGBTs. With these products and more, Fairchild is committed to making technology that fits the needs of engineers.
Please join us on the last day of the show in booth 2J19, at IIC China to see AC-DC power supplies like the FSL1x6 series and much more!
Fairchild Semiconductor, the Right Technology for Your SuccessTM.
Today at IIC China in Shenzhen, we demonstrated a variety of AC-DC power supplies, such as the FAN6755.
The FAN6755 is a highly integrated PWM controller that provides several features to enhance the performance of flyback converters.
At the show, we demonstrated how this product works – showing engineers how the adaptive green-mode function reduces switching frequency at light-load condition. Engineers also learned how this product helps to avoid acoustic noise by setting minimum PWM frequency above 23kHz. This green-mode function enables the power supply to meet international power conservation requirements, such as Energy Star. With the internal high-voltage startup circuitry, the power loss caused by bleeding resistors is also eliminated. To further reduce power consumption, the FAN6755 uses the BiCMOS process, which allows an operating current of only 2mA. The standby power consumption can be under 100mW for most of LCD monitor power supply designs.
The FAN6755 integrates a frequency-hopping function that reduces EMI emission of a power supply with minimum line filters. Its built-in synchronized slope compensation achieves a stable peak-current-mode control and improves noise immunity. The proprietary, external line compensation ensures constant output power limit over a wide AC input voltage range from 90VAC to 264VAC.
Fairchild is dedicated to providing diverse power products that are smaller than ever, and increasingly more energy efficient, in order to meet designer needs and ultimately, consumer demands. Fairchild has a vast array of products and families available including the Fairchild Power Switch (FPSTM) series, High Voltage Gate Driver IC products (HVIC), PWM Controllers such as the FSEZ1317 and PFC controllers such as the FAN7930, as well as broad MOSFET portfolio up to 600V and IGBTs. With these products and more, Fairchild is committed to making technology that fits the needs of engineers.
We invite you to our booth, 2J19, at IIC China on Saturday to see AC-DC power supplies like the FAN6755 and much more!
Fairchild Semiconductor, the Right Technology for Your Success™
Discussion at IIC China in Shenzhen today included information on Fairchild Industrial solutions.
In booth 2J19, Fairchilddiscussed a number of MOSFET and IGBT products that demonstrate the company’s leadership in the High Voltage Switching discrete component marketplace. Among the solutions to be we’ll be talking about at the show will include:
The 500V N-Channel MOSFET, FRFET®MOSFET, and Ultra FRFET™ MOSFETs. These N-Channel enhancement mode power field effect transistors are produced using the company’s proprietary, planar stripe DMOS technology. This advanced technology has been especially tailored to minimize on-state resistance, provide superior switching performance, and withstand high energy pulse in the avalanche and commutation mode. These devices are well suited for high efficient switched mode power supplies and active power factor correction.
The industry-leading SupreMOS® MOSFETs. The next generation of high voltage super-junction MOSFETs, SupreMOS MOSFETs employ a deep trench filling process that differentiates it from preceding multi-epi based technologies. By utilizing this advanced technology and precise process control, SupreMOS devices provide world-class Rsp, superior switching performance and ruggedness. This SupreMOS MOSFET fits the industry’s AC-DC SMPS requirements for PFC, server/telecom power, FPD TV power, ATX power, and industrial power applications.
The FGA20S120M, part of a group of 1200V Shorted-Anode Trench IGBTs. Using advanced Field Stop Trench and shorted-anode technology, these products designed for induction of heating microwave ovens offer superior conduction and switching performances, and easy parallel operation with exceptional avalanche capability.
Fairchild is committed to making technology that fits the needs of engineers. We invite you to visit our booth, 2J19, during the remainder of IIC China in Shenzhen to learn more about the company’s Industrial products and how they can contribute to your success.
Fairchild Semiconductor, the Right Technology for Your Success™.
Today at IIC China in Shenzhen, visitors to the Fairchild booth learned more about Fairchild Motor Drive solutions, including demos on DC-Motor with SPM and BLDC with SPM.
Fairchild has a broad range of power components and support for motor control design in consumer and industrial applications including Fairchild Motion-SPM™ smart power modules and IGBTs.
One of the products Fairchild highlighted today at IIC was the FAN7382, a monolithic half-bridge gate driver IC. The device can drive MOSFETs and IGBTs that operate up to +600V. Fairchild high-voltage process and common-mode noise canceling technique provides stable operation of the high-side driver under high dv/dt noise circumstances. The FAN7382 is an advanced level shift circuit that allows for high-side gate driver operation up to VS = -9.8 V (typ.) for VBS = 15V. The input logic level is compatible with standard TTL-series logic gates. UVLO circuits for both channels prevent malfunction when VCC and VBS are lower than the specified threshold voltage. Output drivers typically source/sink 350mA/650mA, respectively, which is suitable for fluorescent lamp ballasts, PDP scan drivers, motor controls, etc.
Fairchild also talked about products such as the FCM8201/FCM8202. The FCM8201 and FCM8202 are three-phase sinusoidal brushless DC (BLDC) motor controllers. They come with Fairchild advanced Hall sensor design. Using the Hall sensor signals, the control system on these products are able to execute the PWM commutation by switching the three-phase inverter. There are two PWM modes for selection: Sine-Wave Mode and the Square-Wave Mode. Square-Wave Mode includes PWM-PWM and PWM-ON approaches to improve the efficiency of the motor drive. Protection functions including over-voltage, over-current, over temperature, and short circuit prevent the control circuits and the motor from being damaged, particularly under stressed applications and demanding environments. Both the FCM8201 and the FCM8202 can be operated stand-alone or worked with microcontrollers for advanced BLDC motor control.
Fairchild is committed to making technology that fits the needs of engineers. We invite you to visit our booth, 2J19, at this year’s IIC China in Shenzhen to learn more about our Motor products and how they can contribute to your success.
Fairchild Semiconductor: The Right Technology for Your Success™
Fairchild Semiconductor is continuing to advance its high voltage gate driver technology with the FAN708x series of HVICs, which will be showcased at IIC China. The FAN708x is a half-bridge gate drive IC with reset input and adjustable dead time control. It is designed for high voltage and high speed driving of MOSFET or IGBT, which operates up to 600V. The FAN708x allows engineers to develop more accurate and precise fuel injection control systems under all operating conditions.
Fairchild’s high-voltage process and common- mode noise cancellation technique provide stable operation in the high side driver under high-dV/dt noise circumstances. An advanced level-shift circuit allows high-side gate driver operation up to VS=-5V (typical) at VBS=15V. Logic input is compatible with standard CMOS outputs. The UVLO circuits for both channels prevent from malfunction when VCC and VBS are lower than the specified threshold voltage. Combined pin function for dead time adjustment and reset shutdown make this IC packaged with space saving SOIC-8 Package. Minimum source and sink current capability of output driver is 250mA and 500mA respectively, which is suitable for junction box application and half and full bridge application in the motor drive system
We invite you to visit our booth, 2J19, at IIC China in Shenzhen to learn more about the FAN708x and our other automotive solutions.
Fairchild Semiconductor: The Right Technology for Your Success™
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What do All-In-One (AIO) PC power, Slim Pack PC adapters, LCD TVs and LED lighting designs have in common?
They all require a dual switch flyback topology that provides higher efficiency and increased energy savings required by government regulations – something that LLC or single flyback solutions cannot provide.
One product design engineers can use is the FAN6920MR, which is an integrated critical mode PFC and quasi-resonant current mode PWM controller. It meets regulatory requirements by providing >90 percent efficiency and <300mW at no load for increased power savings.
By combining Power Factor Correction (PFC) controller and quasi-resonant PWM controller, the FAN6920MRprovides a cost-effective design and reduces external components.
For PFC, the FAN6920MRuses a controlled on-time technique to provide a regulated DC output voltage and to perform natural power-factor correction. Reduced input current distortion at zero-crossing duration to improve THD performance is the result of the FAN6920MR’s innovative THD optimizer.
For PWM control, the FAN6920MRprovides several functions such as valley detection, green-mode operation, and high / low line over-power compensation to enhance the power system performance. Protection functions include secondary-side open-loop and over-current with auto-recovery protection; external auto-recovery triggering; adjustable over-temperature protection by RT pin; and external NTC resistor, internal over-temperature shutdown, VDD pin OVP, and DET pin over-voltage for output OVP, and brown-in / out for AC input voltage UVP.
Come to IIC China in Shenzhen, February 24-26, to learn more about Fairchild’s innovative controller technologies; Booth 2J19.
Fairchild Semiconductor’s China-based Global Power ResourceSM Center (GPRC) has developed a complete LED street lighting solution that provides high efficiency and outstanding thermal performance, as well as high reliability to increase the lifetime of street lamps.
This solution validates the strong energy-efficiency reputation Fairchild has by reducing power consumption in order to meet and exceed the increasing demand for greener electronics. This demand has been driven by consumers as well as governments and regulatory standards worldwide – including China’s central and provincial authorities and ENERGY STAR’s Solid-State Lighting (SSL) guidelines.
The new solution features advanced critical conduction mode (CrCM) PFC, high-efficiency DC-DC and constant current control. This total solution includes two sub-solutions, either parallel or serial, within the same PCB layout delivering up to 91.26 percent and 92.6 percent efficiency respectively from AC input to the LED side, under 220V input voltage.
It significantly lowers component count by more than 20 for the parallel layout and 86 for the serial layout compared to conventional solutions. Fewer components, robust protection functionality and high LED fault tolerance capability make the solution very reliable. Fairchild GPRC engineers deployed a range of parts from the company’s portfolio to develop this total solution such as the FAN7930, an active power factor correction (PFC) controller designed for boost PFC applications operating in CrCM; the highly integrated Fairchild Power Switch (FPS™), the FSFR2100 offers everything necessary to build a reliable and robust resonant half-bridge converter.
In addition, Fairchild LED lighting solutions are available for applications with output power requirements ranging from <7W up to >100W.
Be sure to stop by booth 2J19 at IIC China to learn more about Fairchild complete LED street lighting solutions.
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Fairchild Semiconductor: The Right Technology For Your Success™.
At IIC China 2011, Fairchild will demonstrate its Low Power Solutions at booth 2J19.
One area we’ll be highlighting is the FSEZ1317. When using this solution, a low-cost, smaller, and lighter charger results, as compared to a conventional SSR (secondary side regulated) design or a linear transformer. To minimize standby power consumption, the proprietary green mode provides off-time modulation to decrease PWM frequency under light-load conditions.
Key features available include 30mW standby power, HV start up and an integrated power MOSFET for ease of design, primary side regulation without secondary side feedback and a universal AC input range. Unlike competitive solutions, PSR PWM controllers from Fairchild achieve constant voltage (CV) (±5%), constant current (CC) (±7%), 30mW standby power and ENERGY STAR Level V efficiency, all with a competitive bill of materials (BOM) cost and component count.
Fairchild is dedicated to providing diverse power products that are smaller than ever, and increasingly more energy efficient, in order to meet designer needs and ultimately, consumer demands. Fairchild has a vast array of products and families available including the Fairchild Power Switch (FPSTM) series, High Voltage Gate Driver IC products (HVIC), and DC-DC conversion solutions such as Dual Cool™ packaged MOSFETs, PowerTrench® MOSFETs, and TinyBuck™ regulators. With these products and more, Fairchild is committed to making technology that fits the needs of engineers.
To learn more about products like these, come to booth 2J19 at IIC China in Shenzhen!
Fairchild Semiconductor: The Right Technology for Your Success™.
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This year at IIC China, we’re proudly displaying some of our breakthrough technology. Those curious about our DC-DC Converter solutions are invited to see our new Low Voltage MOSFETs and learn more about our Dual Cool™ packaging technology.
Our Dual Cool package features an exposed heat slug that delivers a significant reduction in thermal resistance from junction to top of case, resulting in more than 60 percent higher power dissipation capability than standard PQFN packaging when a heat sink is mounted. Additionally, MOSFETs in the Dual Cool package are designed with the proprietary Fairchild Semiconductor PowerTrench® process technology that enables lower RDS(ON) and higher load currents in smaller package sizes.
Fairchild is dedicated to providing diverse power products that are smaller than ever, and increasingly more energy efficient, in order to meet designer needs and ultimately, consumer demands. Fairchild has a vast array of products and families available including the Fairchild Power Switch (FPSTM) series, High Voltage Gate Driver IC products (HVIC), and DC-DC conversion solutions such as Dual CoolMOSFETs, PowerTrench® MOSFETs, and TinyBuck™ regulators. With these products and more, Fairchild is committed to making technology that fits the needs of engineers.
To learn more about Dual Cool packaging technology and other power supply technology, come to booth 2J19 at IIC China!
Fairchild Semiconductor: The Right Technology for Your Success™.
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Written by Ming-Chang Tsou, Tim-Lee and Kenny-Chan
Energy-saving technologies have been the focus of today’s electronics, particularly in the area of standby power consumption. Standby power consumption is important since many electronic devices are in standby mode a great deal of time, and this is where there can be tremendous opportunities to save power.
To reduce standby power and meet the latest ENERGY STAR specifications, Fairchild has incorporated several clever features to enhance the performance of flyback converters and achieve under 30 mW power consumption at standby mode with 230 Vac input for most SMPS (switched mode power supplies) designs. These innovations include high-voltage startup circuitry, ultra-deep burst mode at light load, low operating current at light load, and a patented HV device discharging X-cap Ax-CAP™ technique to save external parts, and give engineers added reliability and a lower BOM cost when compared to solutions using discrete components.
Read this article from Power Management DesignLine for more on minimizing standby power consumption.
Power consumption starts once an electronic device is plugged in, even if most of the time, it is in standby mode. An integrated power IC becomes a key feature for efficiency improvements in power management that can help reduce total costs, switching losses and improve EMI performance for light, slim and smaller power supply designs.
Learn more in an article by Peter Hsieh and Wesley Hsu, featured in Electonic Products and Technology
The emergence of energy-efficiency standards and the continued evolution of processing and feature sets to support new products that consumers and enterprises use in everyday life have changed the methodologies employed for addressing dc power conversion, management, and distribution.
Many consumer product designs traditionally haven’t been as concerned with standby-power dissipation, dynamic load currents, or smaller form factors as, for instance, the wireless handset industry. The advent of these challenges in addressing power-management solutions is driving new thinking in the selection of power regulators for powering ASICs, DSP chips, systems-on-a-chip (SOCs) with a core, memory, and I/O supplies in these products.
Global attention continues to focus on the methods for achieving low power consumption and high efficiency. Lighting represents nearly 20% of the worldwide consumption of electrical resources and advancements in lighting can have a tremendous impact.
LED solid-state lighting (SSL) is environmentally friendly for the global environment. It has a smart form factor, long life, high conversion efficiency, and substantially reduces power consumption up to 80% or 90% compared to traditional incandescent lighting.
LED drivers play an important role in LED SSLs, as these drivers provide accurate current to maintain a stable brightness. However, the traditional approach of the LED driver used a secondary feedback circuitry for driving LED’s voltage and current. This secondary feedback circuit increases the cost and size.
Read this article in Hearst Electronic Products, which describes a patented primary-side regulation (PSR) technology. This PSR controller precisely regulates the voltage and current of the LED driver in the primary side of the transformer without the need for secondary feedback circuitry. It includes a frequency-hopping technique to reduce EMI and a green mode function to reduce standby power losses. With this approach, a PSR charger can achieve a smaller form factor, lower standby power and higher efficiency compared with conventional designs, such as ringing choke converter (RCC) and traditional PWM.
A USB wireless modem, USB dongle, or USB data card can be used along with notebook and tablet PCs to access the Internet as needed. Recently, LTE (Long Term Evolution) supportive modems have been introduced to make a step towards the 4G generation of mobile telephony.
Read this article in EETimes, which focuses on power management solutions for GSM/GPRS mobile systems.
As the trends for greater efficiency and power consumption increase, the concern for heat transfer increases as well. Designers have already taken the necessary steps to improve heat transfer at rails requiring higher power such as at the CPU and GPU, by incorporating various thermal dissipation methods. But what about the DC/DC power supplies? Power engineers are finding that certain areas of the printed circuit board become too hot, and in certain instances, they’ve had to redesign the buck regulator or resort to heat sink usage on the MOSFETs as a last minute fix.
This is where Dual CoolTM packaging comes into play. With today’s top-side cooled packaging technology, the form factor and pad design is different than what engineers are used to seeing. However, there is no issue with familiarity when it comes to Dual Cool packaging versus PQFN because the Dual Cool package is simply a thermal performance upgrade to PQFN. It allows for additional top-side cooling. With enhanced dual path thermal performance and improved parasitics over its wire-bonded predecessors, the use of a heat sink with the Dual Cool package provides even more impressive results.
A heat sinked Dual Cool package allows synchronous buck converters to deliver higher output current, which increases power density. These packages are green, lead-free, RoHS-compliant and available in 3×3 and 5×6 QFN packages.
Written by Jim Gillberg, Director of Automotive Applications
Even before the first transistor was invented, there has been a constant drive to integrate more functionality into a single product.
In IC design, this constant need for higher integration has been achieved through constant improvements in the photolithography used to fabricate the devices.
There has been a similar drive for smaller, less costly and higher performance power devices. However advancements in the RDS(ON) (on resistance) of the power devices while taking advantage of improved photolithography has been enabled by new and more complex structures.
The current power MOS devices developed do not use the traditional planar topologies that had been used for many years.
They have been replaced with much more complex trench or charge-balanced technologies. Both of these approaches add process complexity to significantly lower the specific on resistance of a given mosfet as compared to the older planar technologies.
As system complexity grows, it becomes natural to want to combine both higher performance mixed signal IC functions with high power silicon switches.
However, when you look at the process complexity required for combining high performance mixed signal control with power handling capability, it quickly becomes obvious there has to be a better way than to just integrate everything into a complex single piece of silicon.
Written by Chris Bridge, Principal Engineer – System Development, High Power Solution
The introduction of silicon carbide (SiC) diodes has been a welcome solution to the reverse recovery losses in continuous conduction mode (CCM) boost power factor corrector (PFC) converters. While SiC diodes offer negligible reverse recovery charge (Qrr), the forward voltage drop and temperature coefficient often increase the conduction losses in the PFC boost diodes to an unacceptable level.
Fortunately, the recent introduction of interleaved boundary conduction mode (I-BCM) integrated circuit controllers offer a topological solution to the reverse recovery losses in the CCM boost diodes, which eliminates the need for SiC diodes in many applications from 200 to 800 W.
The CCM boost converter has traditionally been the topology of choice for high-power PFC converters operating in excess of 1 kW. It offers excellent total harmonic distortion (THD), universal input voltage range and reasonable efficiency.
At lower power levels, however, the boundary conduction mode (BCM) topology becomes a viable alternative. In BCM PFC converters, the inductor current is allowed to return to zero every switching cycle, which offers many benefits to the designer. The most important benefit is a reduction in power loss by soft-switching the output diode and power MOSFET.
Written by Steven Sapp, Ritu Sodhi and Sampat Shekhawat
In a typical data center, less than half of the power consumption goes into the computing function. Consequently, data-center operators are looking at every opportunity to improve power conversion and distribution efficiency, including eliminating the number of conversion stages through the distribution of high voltage direct-current sources.
This article, featured in the April 16, 2010 issue of Green SupplyLine, provides an update on the great strides that have been made during the last decade in the development of power semiconductor devices and products to help reduce wasted energy through improved efficiency at every stage of the power delivery system.
The adaptation of digital broadcasting throughout the world is offering consumers the screen resolution that they have not experienced before with CRT TV.
Digital broadcasting offers higher resolution, no motion blurring, larger panel size and lower price – features that consumers are demanding today. And the LCD TV is the next generation of appliances to benefit from the features of digital broadcasting.
The adoption of high-voltage backlight inverters, instead of the existing low-voltage backlight inverter, is one way to enhance the performance of LCD TVs and reduce total system cost.
The advantage of using a high-voltage backlighting inverter is that it can be connected to the power factor correction (PFC) directly without a DC-DC converter, while the low-voltage backlight inverter requires a DC-DC converter after the PFC stage. In fact, the DC-DC converter used with high-voltage backlight solutions to power other loads needs to process only around 30% of the total LCD TV power, because the typical power consumption of the backlight unit in an LCD TV power is 70% of the total. As a result, the high voltage solution reduces the cost of the transformer and the MOSFET in the DC-DC converter.
A half-bridge topology is typically used in high-voltage inverters. However, because it is difficult to achieve Zero Voltage Switching (ZVS) with the half-bridge for every condition, blocking diodes are usually connected in series with the MOSFETs and fast recovery diodes (FRD) are connected in parallel.
MOSFETs have built-in diodes, but if the half bridge circuit does not operate at the ZVS condition, then the reverse recovery current of the built-in diode flows into the other MOSFET when that MOSFET is turned on. This generates a tremendous amount of heat (through RDS(ON)), and the resulting higher temperature will make the reverse recovery current in the second MOSFET even greater when it turns off. Then that high reverse recovery current will increase the power dissipation and reverse recovery current in the first MOSFET in the same way.
This positive feedback increases the MOSFET’s temperature until the amount of emitted heat equals the amount of generated heat.
Generally, the built-in diode of a typical MOSFET has a large reverse recovery current, so LCD TV makers use the half bridge solution with blocking diodes in series to prevent the built-in diode from conducting.
A solution to resolve the power consumption design issues in LCD TVs can be the Ultra FRFET™, a MOSFET with a lifetime control process of reverse recovery current.
Some advantages of using the Ultra FRFET are:
Soft reverse recovery characteristics
Small reverse recovery current which maintains good EMI performance in LCD TV applications
Reduced switching loss (both turn on and off) due to low Qg
Supports high diode dv/dt immunity (20V/ns) compared to normal MOSFET (4.5V/ns)
Good reliability at high temperatures and high frequency operation
The Ultra FRFET works well without blocking diodes and FRDs in LCD TV high voltage backlight inverter applications and is suitable for dimmable ballast applications.
Power devices – they’ve been around for what seems like forever and the number keeps increasing exponentially. It may surprise you that there are still many valuable developments in power devices, especially when it comes to reducing the amount of power they consume.“
We all know that computers demand an enormous amount of power, but did you know that data centers are one of the biggest users? More than 1% of all the power consumed in the U.S. is used to feed servers. (This is equal to the production of five 1000 MW power plants!) Surprisingly, less than half of the power consumption goes into the computing function in a typical data center. The culprit is power conversion and conditioning, distribution and environmental control.
Fortunately, new developments in high-performance semiconductor components like IGBTs and Super-Junction power MOSFETs for rectification, battery charging and DC/AC inverting can make today’s computers much more energy efficient – and designing in these devices isn’t complicated.
Dear Dr. Efficiency, I used a synchronous rectifier MOSFET with large current and low RDSON in a forward converter structure for synchronous rectification (SR) and expected there would be a significant improvement in efficiency. However nothing happened. Why was that? I thought that the SR MOSFET should make a significant contribution to efficiency improvement. – XM Wang
Hello XM,
You are on the right track, but may need to make some corrections. To deal with the power loss, we have to consider two aspects.
The power loss of semiconductor switches mainly comes from two sources: the conduction loss resulting from the loss on the RDSON that is generated when ID goes through the body diode during dead time, and the switching loss which can be roughly classified as three components: the loss caused from current-voltage cross when the MOSFET switches between turn-on and cut-off, the loss on the parasitic capacitance during switching, and that caused by the trr time of the body diode in the MOSFET.
The above equations show the close relation between the switching loss and the switching frequency. In particular, the loss during dead time mainly depends on the switching frequency, since the dead time is usually fixed. In general, for a given output power, the higher the frequency the more switching loss portion dominance; the lower the frequency the more conduction loss portion dominance.
In a SR structure, the body diode is already turned on by freewheel current before the MOSFET turns on. Since the voltage drop on the body diode is usually less than 2V, the conduction loss is not significant in equation (1).
Equation (2) shows the effect on the switching caused by the parasitic capacitance (Coss) of the MOSFET. This Coss is the equivalent capacitance between drain and source, with a voltage equal to Vds applied. Thus, this portion of loss is proportional to the switching frequency and Vds. You can check if the loss in your design is mainly caused by Coss by paralleling a smaller capacitance between the drain and the source to make the two MOSFETs have almost the same Coss value, then analyze the results by using the equations given above. You’ll get an idea about why the efficiency improvement is not significant.
Finally, in a forward half-bridge structure, the switching loss contributed by trr is also significant since the secondary current is usually kept in continuous current mode. You can check if the loss in your design is caused by trr by paralleling a schottky diode on the SR MOSFET side and then observing whether the efficiency is improved notably. If the efficiency is improved significantly, you can select a MOSFET with shorter trr time for the SR MOSFET.
Now, go back to your question. For MOSFETs within the same series, the lower the RDSON, the larger the value of parasitic capacitance. For example, FDP047N10 from Fairchild Semiconductor has a RDSON of 4.7mohm and a Coss of 1500pF, whereas FDP100N10 has a RDSON of 10mohm, but its Coss is only 710pF. In other words, it is possible that the lower RDSON FDP047N10 may have a larger loss under high switching frequency due to its larger Coss. Other parameters, such as Qg, parasitic body diode in MOSFET, also contribute to the overall power loss, which compromises the efficiency improvement effect of lower Rds. So, apart from the RDSON, which should be as low are also possible, the parasitic characteristic is an important factor in MOSFET selection.
Hope you are satisfied with my explanation. Let’s go and have a cup of coffee.
About the author: Dr. Efficiency is a member of IEEE and the 85+ standards team as well as other prestigious electronic societies. He is the company’s expert in power efficiency, and when he’s not in the lab inventing he enjoys karaoke and table tennis and spending time with family and friends. He’s also passionate about blogging on all things related to energy efficiency.
Education: PhD in Electrical Engineering from Asia School of Engineering
Each quarter, Fairchild Semiconductor introduces new products, tips and tools for power and analog applications in the quarterly Benchmarks magazine. The following Benchmarks Volume 1, 2010 “Engineering Connections” article discusses flyback topology as an efficient solution for meeting today’s global demand for lowering power consumption in power supplies.
External power adapters are instrumental for the operation of virtually all small electronic devices. As many as 3.2 billion adapters are currently in use globally, according to industry estimates.
With this worldwide focus on energy savings, regulatory bodies are examining all ways to “go green,” and standards have been developed, specifying higher levels of efficiency for products such as notebook PC power supplies. Flyback topology has proven to be an effective solution, both in terms of cost and technology, for pulse-width modulated (PWM) power conversion in these products. Fairchild has a wide portfolio of PWM controllers that enhance the performance of flyback converters.
As part of its global focus on energy savings, Fairchild has developed a portfolio of pulse-width modulated (PWM) controllers, which enable notebook power-supply designers to meet the stringent international energy-saving regulations. These include the ENERGY STAR External Power Supply (EPS) version 2.0 requirement that mandates 87 percent average active-mode efficiency to obtain compliance.
Integrated PWM controllers, like the FAN6754, offer designers high-voltage startup to improve energy savings at light load by 25 percent when compared to alternate solutions. It also eliminates external protection circuits by incorporating over-voltage, over-current and over-temperature protection plus brownout and line-compensation functions. Other advantages of Fairchild’s PWM controllers include frequency hopping, which reduces EMI emissions by as much as 5-10 dB, and internal soft start (8ms) to reduce voltage stress on the MOSFET at startup.
Additionally, Fairchild’s PWM controllers incorporate several design features that lower the overall power consumption of notebook adapters, such as a proprietary green-mode function that provides off-time modulation to continuously decrease the switching frequency under light-load conditions. Fairchild’s PWM devices offer a host of robust, accurate protection features built-in to protect the power supply and the load from failure, all without adding external components or circuitry.
The power requirement of LED street lamps being used in China falls in the range of 100~250W. It is widely agreed that if used properly, these kinds of LED street lamps deliver many advantages. What I want to explain here is the ways to make it possible for these lamps to deliver those advantages. The key factors to be considered are high efficiency, power, reliability and cost-effectiveness.
Some low-power lighting requires PFC, while high-power lamps usually require PFC combined with DC/DC requirements. In China where the AC line voltage is 220V, Boundary-Conduction Mode (BCM) PFC controllers, such as the FAN7530 and the FAN6961, become the ideal choice to maintain a balance between the efficiency and performance-cost ratio. These solutions only need a few components.
Low Rds(on) SupreMOS(TM) MOSFETs, can further decrease switch and conduction loss. When used at the boost output, the HyperFAST 2 high voltage diode family with lower Vf can also lower the conduction loss of the diode itself.
For DC/DC topology, there are many choices such as quasi-resonant (QR), double transistor forward (DTF), active-clamp, LLC and asymmetrical half-bridge (AHB). High-power lighting applications, for example in a 100W lamp, where the output voltage is usually a little high, QR working with a synchronous rectifier can achieve up to 92.5% of total efficiency. Moreover, Fairchild has integrated QR and BCM PFC into one package (the FAN6921), reducing external components and simplifying the control.
Another popular topology is zero voltage switch (ZVS). Both an LLC and an AHB can have their two bridges working in zero voltage by implementing a simple circuit. When using Fairchild’s highly-integrated solution (for example, a LLC controller and two MOSFETs in FSFR; an AHB controller and two MOSFETs in FSFA2100), the circuit can be further simplified, with few external components. And the body diode of the MOSFET has good fast recovery characteristic, which can reduce the possibility of short-through, yet provide high reliability with high efficiency. When the output voltage is high, an LLC is the better option; when the output voltage is low, an AHB is more suitable for implementing a self-driven synchronous rectifier, and both can achieve over 93~94% efficiency.
The above solutions are highly integrated solutions and require just a few components, thus delivering high efficiency, high power density, optimized thermal performance as well as high reliability.
Click here for more information on LED lighting from Fairchild.
About the author: Dr. Efficiency is a member of IEEE and the 85+ standards team as well as other prestigious electronic societies. He is the company’s expert in power efficiency, and when he’s not in the lab inventing he enjoys karaoke and table tennis and spending time with family and friends. He’s also passionate about blogging on all things related to energy efficiency.
Education: PhD in Electrical Engineering from Asia School of Engineering
PV inverter technology is driven by efficiency and compliance, but reliability is also important
What modern, ecological houses are wearing this season is blue – more precisely, the dark blue of solar cells. And this trend is gaining momentum, despite the financial crisis and reduction in feed-in tariffs from governments surprised by the success they created.
The owners of these systems are less concerned about the looks. What they are concerned about is high and reliable output. (Think of efficiency in the high 90s at more than 7000 power temperature cycles over lifetime!).
LED options are advertised as longer lifetime and more efficient lighting options to the traditional CFL, LFL, and HIDs.Is this really true?What are the factors that determine LED product life?
LED lifetime is measured in lumens depreciation.It is percentage of light output degradation from initial light output.LED Industry standard from IESNA (Illumination Engineering Society of North America) such as LM-80 specifies procedure for determining lumens depreciation.Researching the different LED vendors and their datasheets, the common theme is proper heat sink and thermal management of silicon junction temperature extends the lifetime of the LEDs. Look for lifetime versus junction temperature graphs in LED vendor datasheets that accounts for lumens depreciation.For example, L70 notation means that light output is 30% less than initial output. It is the percentage decrease that a “typical” eye starts to detect a decrease in light output.Different end applications can determine suitable lumens depreciation levels.
Thermal management of LEDs is half the effort to ensure the advertised lifetime.The LED power supply or driver design is the other factor for lifetime.When the LED does not work, the end user does not care if it is caused by LED’s lumens depreciation or the LED power supply that failed.
Because LEDs are non-linear (varying forward voltage versus forward current) devices, a constant current LED driver or power supply is required.Because non-linear LEDs produce power factor less than 1, PFC (Power Factor Correction) LED drivers are needed when it exceed a certain power level and/or harmonic current limits.Requirement to light high brightness LEDs is a power supply.There are components in a power supply that can decrease the life.More details next time!
By Guy Moxey, Low Voltage Power, Product Marketing
With the emergence of important climate saving legislation such as 80 PLUS, Climate Savers and EnergyStar® 5, analog designers for DC-DC power systems are striving to meet the challenge of increasing system level efficiency across all operating power states. From this, power silicon products such as power IC’s and power MOSFET’s are now very much in vogue as these devices create and dissipate the vast majority of any low voltage power conversion in-circuit losses that, in turn, directly relate to the system’s overall efficiency.
Take a typical notebook, typical peak efficiencies for a 46A, 2 phase Notebook VCORE solution with PWM controller and discrete MOSFET implementation are typically @90% peak at current ratings of 10A per phase, reducing down to @86% at full loads of 23A. This 10-13% loss in system efficiency is directly proportional to power and thermal dissipation. The complete notebook system is normally @ 50-60W output and running at 85% efficiency so that translates to a 9W power waste for every note book PC in the form of heat and battery life.
At start up or during a heavy processing sequence, the power system is dominated by conduction losses ( I2R) of the low side MOSFET. Here select a ultra high cell density low RDS(ON) FET housed in a dual sided cooled package so that the losses will be significantly minimized. However, as most PC s spend a majority of their operating life in standby or sleep states, it’s essential that the power system allows for light load efficiency management where gate drive and switching losses are predominant at low output currents below 10A. Here driver impedance and MOSFETs have to be carefully optimized. Gate drive voltages of 5V are preferred with MOSFETs with ultra low gate charge.
The driver IC can pulse skip switching cycles to minimize MOSFET switching loss and also low-drive disable to effectively blank out the low side MOSFET completely allow for discontinuous conduction mode operation.
By careful MOSFET selection, close optimization with the driver IC, the design can start to move toward a higher level of overall system efficiency. Full load thermal design points can inch upward toward the 90% level, medium to light load levels can be touching 95% and ultra light loads don’t immediately take a dive southward with such velocity. But while we progress and save a few watts of loss over today’s designs, there is still some significant silicon research and development to be done before the utopian power curve can be seen.
The adaptation of digital broadcasting throughout the world is offering consumers the screen resolution that they have not experienced before with CRT TV.
Dear Dr. Efficiency, I used a synchronous rectifier MOSFET with large current and low RDSON in a forward converter structure for synchronous rectification (SR) and expected there would be a significant improvement in efficiency. However nothing happened. Why was that? I thought that the SR MOSFET should make a significant contribution to efficiency improvement. – XM Wang
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