PFC flyback full-bridge-based intelligent modified-wave voltage conversion circuit
A conversion circuit and intelligent technology, applied in the direction of high-efficiency power electronic conversion, output power conversion device, electrical components, etc., can solve the problems of low PF value, low output voltage quality, poor safety and reliability, etc.
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[0019] The present invention will be described in more detail below in conjunction with the accompanying drawings and embodiments.
[0020] The invention discloses an intelligent modified wave voltage conversion circuit based on PFC flyback full bridge, combining Figure 1 to Figure 3 As shown, it includes:
[0021] An input unit 10 for outputting DC voltage;
[0022] A PFC step-up unit 20, connected to the output end of the input unit 10, for boosting the output voltage of the input unit 10;
[0023] A flyback isolated converter unit 30, including a first switch tube Q6, a transformer T1, a first rectifier diode D5 and a first electrolytic capacitor C3, the first end of the primary winding of the transformer T1 is connected to the PFC boost unit 20 The output terminal of the primary winding of the transformer T1 is connected to the drain of the first switching tube Q6, the source of the first switching tube Q6 is connected to the front-end ground, and the gate of the first ...
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