POWER FACTOR CORRECTION CIRCUIT

摘要

A power factor correction circuit is provided to remove noise, inputted through a wire on a printed circuit board, which is generated at the time of transmitting a control signal to a switch. A power factor correction circuit includes a first inductor, a second inductor, and a power factor correction circuit(110). The second inductor is magnetically connected to the first inductor and configures a transformer. The power factor correction integrated circuit increase a current flowing on the first inductor at a first time of point when the current flowing on the first inductor is zero by receiving a first voltage generated in the second inductor and a feed-back voltage corresponding to an output voltage outputted through an output terminal of the power factor correction circuit. The power factor correction integrated circuit includes a first switch and a switching control unit(111). The switch has a primary end connected to a secondary end of the first inductor. The switching control unit controls the first switch to be turned on at the first time of point.