Patent ID: 8937462
Filing Date: 2015-01-20
Classification: G05B,G05F,G06F,H02M,Y02B,Y02P

Abstract:
1. A power factor correction circuit comprising: an inductor receiving an input voltage and supplying an inductor current; a power switch connected to the inductor and controlling the inductor current; and a power factor correction controller generating a control voltage for controlling a switching operation of the power switch according to a first control structure during a predetermined overvoltage stabilization period generated in synchronization with a time that an output voltage becomes an overvoltage and according to a second control structure that is different from the first control structure during a normal state in which the output voltage is not the overvoltage, wherein the power factor correction controller determines a control structure for generating the control voltage according to a difference between the output voltage and a predetermined output target voltage.