Power factor correction circuit

摘要

There is provided a power factor correction circuit including: a main switching unit including a first main switch and a second main switch performing a switching operation to regulate a phase difference between a current and a voltage of input power, respectively; a main inductor unit including a first main inductor and a second main inductor accumulating or discharging energy according to a switching operation of each of the first main switch and the second main switch; a snubber switching unit including a first snubber switch and a second snubber switch providing zero-voltage turn-on conditions to the first main switch and the second main switch, respectively; and a controller controlling a switching operation of the main switching unit and the snubber switching unit.

主权项

1. A power factor correction circuit comprising:
a main switching unit including a first main switch and a second main switch performing a switching operation to regulate a phase difference between a current and a voltage of input power, respectively; a main inductor unit including a first main inductor and a second main inductor accumulating or discharging energy according to a switching operation of each of the first main switch and the second main switch; a snubber switching unit including a first snubber switch and a second snubber switch providing zero-voltage turn-on conditions to the first main switch and the second main switch, respectively; and a controller controlling a switching operation of the main switching unit and the snubber switching unit, wherein the controller controls at least one of a first group set to include the first main switch and the first snubber switch and a second group set to include the second main switch and the second snubber switch according to a current flowing in the main inductor unit.