Patent ID: 7499300

Claim:
A synchronous rectification and voltage stabilization circuit, comprising: an input terminal; an output terminal; a synchronous rectifier switch having a gate; a driving circuit comprising a driving coil connected with the gate of the synchronous rectifier switch, configured for tuning on the synchronous rectifier switch according to voltages inducted across the driving coil; a discharging circuit comprising a discharging coil and a controllable switching component both connected to the gate of the synchronous rectifier switch, configured for turning off the synchronous rectifier switch according to voltages inducted across the discharging coil; a saturable inductor comprising a saturable inductance coil connected between the input terminal and the synchronous rectifier switch, the saturable inductor having a regulable saturation point; and a voltage stabilization circuit connected between the output terminal and the saturable inductor, configured for regulating the regulable saturation point of the saturable inductor according to an output voltage of the output terminal and a target value of the output voltage.