Transcription of Power factor corrector - STMicroelectronics
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Power factor corrector - STMicroelectronics
L4981AL4981 BPOWER factor CORRECTORCONTROL boost PWM UP TO LINE CURRENT DISTORTION TO < 5%UNIVERSAL INPUT MAINSFEED FORWARD LINE AND LOAD REGULA-TIONAVERAGE CURRENT MODE PWM FORMINIMUM NOISE SENSITIVITYHIGH CURRENT BIPOLAR AND DMOS TO-TEM POLE OUTPUTLOW START-UP CURRENT ( TYP.)UNDER VOLTAGE LOCKOUT WITH HYS-TERESIS AND PROGRAMMABLE TURN ONTHRESHOLDOVERVOLTAGE, OVERCURRENT PROTEC-TIONPRECISE 2% ON CHIP REFERENCE EX-TERNALLY AVAILABLESOFT STARTDESCRIPTIONThe L4981 provides the necessary featuresto achieve a very high Power factor up to in BCD 60II technology this Power factorcorrector (PFC) pre-regulator contains all the con-trol functions for designing a high efficiency-modepower supply with sinusoidal line current con-sumption.
power factor corrector control boost pwm up to 0.99p.f. limit line current distortion to < 5% universal input mains feed forward line and load regula-tion average current mode pwm for minimum noise sensitivity high current bipolar and dmos to-tem pole output low start-up current (0.3ma typ.) under voltage lockout with hys-teresis and ...
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