POWER FACTOR CORRECTION CIRCUIT WITH SOFT SWITCHING

실시예에 따른 소프트 스위칭이 가능한 역률 보상 회로는, 교류 전압을 공급하는 전원부, 상기 교류 전압의 역률을 보상하여 출력 전압을 생성하는 구동부, 상기 출력 전압을 부하에 인가하는 출력부, 그리고 상기 구동부에 포함된 제1 스위치 및 제2 스위치를 턴-온 또는 턴-오프 시키는 제1 게이트 전압, 및 제2 게이트 전압을 생성하는 제어부를 포함한다. The present invention provides a power factor compensation circuit which performs soft switching without additionally using switches. According to an embodiment of the present invention, the power factor compensation circuit comprises: a power supply unit supplying an alternating-current voltage; a driving unit compensating for the power factor of the alternating-current voltage to generate an output voltage; an output unit applying the output voltage to a load; and a control unit generating a first gate voltage and a second gate voltage. The driving unit includes: coupled inductors including a primary inductor connected between a first node and a second node and a secondary inductor connected between the first node and a third node; a magnetizing inductor connected between the first node and the second node; a first diode including a cathode connected to the third node and an anode connected to a fourth node; and a second diode including an anode connected to the third node and a cathode connected to a fifth node. The turns ratio of the primary inductor and the secondary inductor is 1:1.