Patent ID: 8878500
Filing Date: 2014-11-04
Classification: G05F,H02M,Y02B

Abstract:
1. A power factor correction circuit, comprising: a main switch adjusting a phase difference between a current and a voltage of input power; a main inductor generating output power by storing or discharging the power according to switching of the main switch; a snubber circuit unit including a snubber switch forming a transfer path for surplus power present before the main switch is turned on and a snubber inductor adjusting an amount of a current applied to the snubber switch; and a reduction circuit unit including an auxiliary inductor inductively coupled to the snubber inductor and an auxiliary resistor consuming power induced from the snubber inductor through the auxiliary inductor, wherein the auxiliary inductor is inductively coupled to the main inductor to transfer the power induced from the snubber inductor to the main inductor, and the main inductor recycles the power transferred from the auxiliary inductor to the output power.