What is power factor correction?
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In an electric power system, a load with low power factor draws more current than a load with a high power factor for the same amount of useful power transferred. The higher currents increase the energy lost in the distribution system, and require larger wires and other equipment. A device that draws an apparent power of 1kVA and has a 0.5pf consumes 500W, not 1kW. Power factor correction (PFC) is, essentially, what you do to complex AC loads, such as switch mode power supplies, to make them act more like simple loads, such as toasters. |
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| 2012-05-02 | Address flicker, dimming challenges in LED lamp design A two-stage power factor correction scheme can be used to eliminate line-frequency ripple and the resulting flicker at the output of LED solid-state lights. |
| 2012-04-03 | TI's LED driver features flicker-free dimming TI's TPS92310 TRIAC dimmable LED driver with PFC correction, features both full-range and flicker-free dimming. |
| 2011-12-29 | R2A20113A power factor correction controller R2A20113A power factor correction controller |
| 2011-12-13 | Offline regulator eliminates opto-isolator Linear's LT3798 is an isolated flyback controller that eliminates the opto-isolator or signal transformer for feedback since the output voltage is sensed from the primary-side flyback signal. |
| 2011-12-14 | Use active PFC offline LED controller for primary-side control Read about a power solution touted to reduce component costs and improve overall energy efficiency. |
| 2011-11-22 | PFC controller reduces harmonic distortion ADI unveils dual-phase ADP1048, claimed as first digital PFC controller that offers highly accurate AC power metering capability. |
| 2011-07-22 | Power supply IC targets 85W–1kW PFC apps Power supply IC targets 85W–1kW PFC apps |
| 2011-05-17 | IC packs PFC, ballast control IR's IRS2580DS Combo8 IC comes in a compact 8-pin SO-8 package that integrates power factor correction (PFC) and ballast control in a single IC. |
| 2011-04-26 | LED control IC combines PFC, half-bridge driver IR's IRS2548D Switched Mode Power Supply (SMPS) LED control IC combines Power Factor Correction (PFC) and half-bridge driver in a single IC offering greater than 88 per cent efficiency. |
| 2011-03-24 | PFC ICs operate over 85-264VAC input line range IR's IR115x family of µPFC ICs offer high PF, low total harmonic distortion and DC Bus regulation while decreasing component count, PCB area and design time compared to traditional solutions. |
| 2011-03-17 | PFC ICs enhance system protection in AC-DC apps IR's IR115x family of µPFC power factor correction ICs promise high PF, low total harmonic distortion and excellent DC Bus regulation for AC-DC applications. |
| 2010-11-30 | LED controller improves efficiency with PF correction LED controller improves efficiency with PF correction |
| 2010-11-19 | Constant current LED drivers extends over 12W to 20W Element14 has just announced the latest RECOM AC/DC LED solutions which packs universal AC inputs, power factor correction. |
| 2010-11-16 | AC-DC converter packs PFC correction AC-DC converter packs PFC correction |
| 2010-10-08 | LED drivers offer built-in power factor correction LED drivers offer built-in power factor correction |
| 2010-09-29 | PFC controller IC features zero current switching Allegro MicroSystems Inc. reveals the SSC2101S, a dual-phase DCM interleaved PFC controller IC for use in the telecom, server, home appliance and industrial markets. |
| 2010-09-16 | EVL250W-ATX80PL: 80 PLUS Silver 250W ATX SMPS demonstration board This application note describes the characteristics and performance of a 250W wide range input and power factor corrected power supply designed to be used in an ATX app. |
| 2010-07-27 | Industrial apps reap benefits from PFC device This article explains the different power types that an electricity meter measures, power factor and power factors' implications on power measurement. |
| 2010-07-28 | 3kW fixed-off-time (FOT) power factor correction 3kW fixed-off-time (FOT) power factor correction |
| 2010-07-12 | LED driver integrates PFC, step-down AC/DC An offline LED driver from ON Semiconductor integrates power-factor correction (PFC) and isolated step-down AC-DC power conversion in a single stage. |
| 2010-07-09 | Offline LED driver offers single-stage PFC, conversion ON Semiconductor's LED Driver NCL30001 integrates power factor correction (PFC) and step-down power conversion in a single stage to offer reduced component count, improved efficiency and lower cost solution. |
| 2010-07-05 | PFC controller offers soft-start, overshoot-less functions Fairchild Semiconductor unveils FAN7830, an active power-factor correction (PFC) controller for boost applications that operate in critical conduction mode (CRM). |
| 2010-06-17 | Reference design: wide range 200W L6599-based HB LLC resonant converter for LCD TV, flat panels This application note describes the performances of a 200W reference board, with wide-range mains operation and power-factor-correction (PFC). |
| 2010-06-16 | Digital PFC ICs boasts better performance than analogue Cirrus Logic Inc. is rolling out a new product line of digitally controlled, active power factor correction ICs that it claims is the first to surpass analogue PFCs on performance and price. |
| 2010-05-27 | Design consideration for BCM PFC using FAN7930 The application note presents practical step-by-step design considerations for a boundary-conduction mode (BCM) power factor correction (PFC) converter employing Fairchild PFC controller, FAN7930. |
| 2010-05-26 | How to design a transition-mode PFC pre-regulator with the L6563S and L6563H The transition-mode (TM) technique is widely used for power factor correction (PFC) in low and middle power applications. |
| 2010-03-26 | How to design a transition mode PFC pre-regulator using the L6564 The transition mode (TM) technique is widely used for power factor correction (PFC) in low and middle power applications and all switched-mode power supplies that must meet harmonics reduction regulations. |
| 2010-03-17 | Hi-integrated PFC controller cuts 54 external parts Fairchild has developed a CCM PFC controller for 300W to 2kW power supply designs that reaches 0.999 of PF at full load. |
| 2010-03-01 | LED driver enables 90% efficiency Infineon Technologies AG has launched its specific off-line driver IC for high-efficiency LED bulbs with dimming for residential lighting. |
| 2010-02-22 | Resonant converter offers capacitive mode protection From NXP Semiconductors comes the GreenChip TEA1713 resonant half-bridge converter complies with ENERGY STAR requirements, delivering 90+ per cent efficiency. |
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