首页>
外国专利>
POWER FACTOR CORRECTION CONTROL CIRCUIT COMPRISING AN AC/DC RECTIFIER, AN INDUCTOR, A SWITCH, AND A BOOST CONVERTER
POWER FACTOR CORRECTION CONTROL CIRCUIT COMPRISING AN AC/DC RECTIFIER, AN INDUCTOR, A SWITCH, AND A BOOST CONVERTER
展开▼
机译：包含AC / DC整流器，电感器，开关和升压转换器的功率因数校正控制电路
展开▼
页面导航
摘要
著录项
相似文献
摘要
PURPOSE: A power factor correction control circuit is provided to effectively enhance a power factor of a power circuit, thereby reducing power consumption.;CONSTITUTION: A power factor controller detects an output voltage of a boost converter as a feedback voltage, detects a current flowing in a switch by detecting an output current of a rectifier, to control operation of the switch based on the detected signals. The power factor controller includes a voltage regulator, an error amplifier, a multiplier, a current detection comparator, a zero current detector, and a PWM latch. A protection circuit prevents malfunctions of the power factor controller. The protection circuit includes an undervoltage-lockout for protecting a control circuit in a case of input voltage dropping and an over voltage protection circuit for protecting the control circuit in a case that output voltage is raised.;COPYRIGHT KIPO 2013;[Reference numerals] (AA) Transmitter; (BB) Voltage regulator; (CC) Latch; (DD) Level shifter; (EE) Driver; (FF) Starter
展开▼
