Tag Archive for ‘PWM controller’
January 24, 2012
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By Paul Hughes
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.
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
Can’t make it to the show? Follow us on Twitter (@ http://twitter.com/FairchildSemi) to catch the latest from the show floor.
Tags: APEC, APEC 2012, energy efficient controllers for flyback designs, Fairchild, Fairchild Semiconductor, flyback designs, manage low power loss at light load, mWSaver technology, power supply applications, power supply design, power supply solutions, Power Supply WebDesigner, PWM controller
May 4, 2011
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By Paul Hughes
At PCIM Europe 2011, 17-19 May, Fairchild Semiconductor, (NYSE: FCS), a leading global supplier of high performance power and mobile products, will demonstrate industry-leading technologies for power supplies and motion control applications in Hall 12, booth 601, in Nuremberg, Germany.
Focusing on embedded DC-DC, industrial power supply, motor and automotive solutions that deliver Efficient Energy, Robust Reliability and Powerful Possibilities, Fairchild demonstrations will include:
- DC-DC power solutions that showcase our AccuPowerTM load switch series, the industry’s first 2.8V to 36V integrated load switches, intended to address the designer’s mid-voltage needs, as well as mid-voltage MOSFETs designed specifically to minimize conduction loss, switch node ringing, and to improve the overall efficiency of DC-DC converters.
- LED Lighting solutions like the FAN6300A, a PWM controller which can be used for a 20W dimmable board. This product provides several features to enhance the performance of flyback converters.
- Industrial solutions including our FOD8012, a full duplex, bi-directional, high-speed logic gate optocoupler, which supports isolated communications allowing digital signals to communicate between systems without conducting ground loops or hazardous voltages.
- Motor solutions including Fairchild’s series 5 smart power modules (SPM®) with built-in bootstrap diodes and gate drivers in small packages (29mm x 12mm) for increased manufacturing flexibility. Also on display will be new 40V - 150V MOSFETs employing a shielded-gate structure that provides charge balance, offering high robustness (UIS) with excellent body diode performance and a lower Irrm and higher dv/dt rating.
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
Tags: AccuPower, DC-DC power solutions, Fairchild, Fairchild Semiconductor, FAN6300A, FOD8012, industrial solutions, LED Lighting, Load switch, motor solutions, optocoupler, PCIM, PCIM Europe, PWM controller, shielded-gate, smart power modules, SPM
March 7, 2011
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By Paul Hughes
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™.
Can’t make it to the show? Follow us on Twitter to catch the latest from the show floor
Tags: APEC, Fairchild, Fairchild Semiconductor, FAN302HL, mWSaver, PWM controller
January 18, 2010
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By Benchmarks
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.
Tags: Benchmarks, Energy Efficiency, Fairchild Semiconductor, flyback converter, green, PWM controller
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