Patent ID: 7974108

Claim:
A synchronous rectifying circuit for power converter, comprising: an integrated synchronous rectifier comprising: a rectifying terminal, coupled to a secondary side of a transformer; a ground terminal, coupled to an output of the power converter; a first input terminal; and a second input terminal; wherein a power transistor is connected between the rectifying terminal and the ground terminal; and the first input terminal and the second input terminal are coupled to receive two pulse signals for turning on/off the power transistor; a pulse-signal generation circuit comprising: an input terminal, coupled to receive a switching signal; a first output terminal; and a second output terminal; wherein the switching signal is used for switching the transformer of the power converter; and the first output terminal and the second output terminal are utilized to generate the pulse signals; and an isolation device, coupled between the first input terminal and the second input terminal, and the first output terminal and the second output terminal.