About Power Factor Correction - PFC

Power Factor Correction (PFC) is a technique of achieving greater efficiency in electrical systems by improving the power factor of the electricity being used. The power factor is the ratio of the active power flowing in an electrical circuit to the apparent power, i.e. how much electricity is being used effectively. PFC improves power factors by manipulating the phase angle between the current and voltage waveforms. This is done by controlling the electrical current such that the current waveform is shifted in time relative to the voltage waveform in order to reduce the current that is being wasted and increase the current that is being used effectively. Through Power Factor Correction, electrical systems are more efficient, reduce energy consumption and increase power quality in the system.

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    L6562ADTR


    		Driver; PFC controller; 650mW; 10.5÷22.5V; SO8; Package: reel, tape
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    		STMicroelectronics 3821
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    CHf 0.445
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    L6563TR


    		Power Factor Correction - PFC POWER SUPPLY
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    		STMicroelectronics 2555
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    CHf 0.6965
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    		  - 25 C+ 150 CSmd/SmtSO - 14  Reel
    L4984DTR


    		Power Factor Correction - PFC Current Mode PFC CCM Line Modulated Bi
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    		STMicroelectronics 1777
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    CHf 1.1624
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    		 0.75 W- 40 C+ 150 CSmd/SmtSSOP - 100.75 W Reel
    L6563A


    		Power Factor Correction - PFC Advanced transition mode PFC controller
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    		STMicroelectronics 1000
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    CHf 1.0016
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    		70 KHz - 25 C+ 150 CSmd/SmtSO - 14750 mW Tube
    L6562ATDTR


    		Power Factor Correction - PFC Transition-mode PFC controller
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    		STMicroelectronics 868
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    		  - 40 C+ 125 CSmd/SmtSO - 8  Reel
    STNRGPF01


    		Power Factor Correction - PFC INDUSTRIAL & POWER CONVERSION
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    		STMicroelectronics 761
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    CHf 2.2056
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    		1 MHz - 40 C+ 105 CSmd/SmtTSSOP - 38100 mW  
    L4981BD013TR


    		Power Factor Correction - PFC Very High Power
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    		STMicroelectronics 742
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    		115 KHz - 40 C+ 125 CSmd/SmtSO - 20  Reel
    L6563STR


    		Power Factor Correction - PFC Transition Mode PFC 5mA 90uA 1.5% Ref
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    		STMicroelectronics 540
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    		 0.75 W  Smd/SmtSO - 14  Reel
    L6561


    		Power Factor Correction - PFC Wide Input Voltage
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    		STMicroelectronics 156
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    L4984D


    		STMicroelectronics Power Factor Correction - PFC Current Mode PFC CCM Line Modulated Bi
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    		STMicroelectronics 32
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