Intelligent corrective wave voltage conversion circuit based on PFC (power factor correction) forward half-bridge

The invention discloses an intelligent corrective wave voltage conversion circuit based on a PFC (power factor correction) forward half-bridge. The circuit comprises an input rectifier filter unit, a PFC voltage boosting unit, an isolated two-transistor forward converter and an inversion reverse-phase unit, wherein the isolated two-transistor forward converter comprises a first switch tube, a second switch tube, a first diode, a second diode, a third diode, a fourth diode, a transformer and a filter inductor, a source of the first switch tube is connected to a first end of a transformer primary winding, a second end of the transformer primary winding is connected with a drain of the second switch tube, a grid of the first switch tube and a grid of the second switch tube are used for accessing the same PWM (pulse width modulation) signals, the first end of the transformer primary winding is connected to an anode of the third diode, the rear end of the filter inductor is taken as an output end positive pole of the isolated two-transistor forward converter, and an anode of the fourth diode is taken as an output end negative pole of the isolated two-transistor forward converter. With the adoption of the circuit, PF (power factor) value and output voltage quality can be improved.