| 摘要 |
Embodiments of the present invention provide a bridgeless power factor correction PFC circuit, which includes an alternating current power supply module, a power module, and a control module, where the alternating current power supply module is connected to the power module, so as to provide electrical energy for the power module; the power module includes one or more interleaved PFC circuits, each interleaved PFC circuit includes one inductor, one pair of first switching components, and at least one capacitor, a first end of the inductor is connected to the alternating current power supply module, and a second end of the inductor is connected to one end of each capacitor through one of the first switching components and is also connected to the other end of each capacitor through the other one of the first switching components; and the control module samples a current of each first switching component in the power module, and turns off a first switching component through which a negative current flows. In the embodiments of the present invention, a triangular current mode TCM control method is adopted, so as to make all the first switching components work in a soft switching state, thereby minimizing a loss and improving overall efficiency. |
