Power factor correction converter and control method thereof

摘要

A power factor correction converter and a control method are disclosed. A power factor correction converter includes a power conversion module, a capacitor, a third switch unit, and a fourth switch capacitor. The power conversion module includes a first switch, a second switch, a first switch unit, a second switch unit, and an inductor. The first switch is coupled to a first input terminal. The second switch is coupled to a second input terminal. The first switch is coupled between an output terminal and the first switch. The second switch is coupled between the output terminal and the second switch. The inductor is coupled between the first and the second switch unit. The capacitor is coupled to the output terminal. The third switch unit is coupled between the second input terminal and the capacitor. The fourth switch unit is coupled between the first input terminal and the capacitor.

主权项

1. A power factor correction converter, comprising:
a power conversion module having a first input terminal, a second input terminal, and an output terminal, the first input terminal and the second input terminal being electrically coupled to an AC power source, the power conversion module comprising a first switch, a second switch, a first switch unit, a second switch unit, and a power factor correction inductor, the first switch being electrically coupled to the first input terminal, the second switch being electrically coupled to the second input terminal, the first switch unit being electrically coupled to the output terminal and the first switch unit and the first switch being electrically coupled to a first voltage node, the second switch unit being electrically coupled to the output terminal and the second switch unit and the second switch being electrically coupled to a second voltage node, the power factor correction inductor being electrically coupled between the first voltage node and the second voltage node; an output capacitor electrically coupled to the output terminal for generating a DC output voltage; a third switch unit electrically coupled between the second input terminal and the output capacitor; and a fourth switch unit electrically coupled between the first input terminal and the output capacitor.