公开(公告)号：US20080246751A1

公开(公告)日：2008-10-09

申请号：US11967825

申请日：2007-12-31

Applicant: Il-Woon LEE

Inventor： Il-Woon LEE

IPC: G09G5/00 ,  G05F1/70

CPC classification number: G05F1/70 ,  G09G3/28 ,  G09G2330/028

Abstract: A power factor correction circuit (PFC) including a switch, a feedback signal generator for generating a feedback voltage corresponding to an output voltage, and a switching controller for receiving the feedback voltage and for controlling turn-on/turn-off of the switch. The feedback signal generator includes first and second resistors serially connected to first and second ends of an PFC output terminal; a first capacitor connected between a first node of the first and second resistors and the first end of the PFC output terminal; and a comparator for comparing a voltage of the first node and a reference voltage, and for generating a feedback voltage.

Abstract translation: 包括开关的功率因数校正电路（PFC），用于产生对应于输出电压的反馈电压的反馈信号发生器，以及用于接收反馈电压并用于控制开关的接通/断开的开关控制器。 反馈信号发生器包括串联连接到PFC输出端的第一和第二端的第一和第二电阻; 连接在第一和第二电阻器的第一节点与PFC输出端子的第一端之间的第一电容器; 以及比较器，用于比较第一节点的电压和参考电压，并用于产生反馈电压。