Patent ID: 7616457

Claim:
A synchronous regulation circuit for a power converter, comprising: a primary-side switching circuit, for generating switching signals and synchronous signals, wherein said switching signals are coupled to switch a transformer; an isolation device, coupled to said primary-side switching circuit for transferring said synchronous signals from a primary side of said transformer to a secondary side of said transformer; a secondary-side switching circuit, coupled to an output of said power converter to generate pulse signals in response to said synchronous signals and a feedback signal; and synchronous switches, each having a power-switch set and a control circuit, said power-switch set being coupled in between said secondary side of said transformer and said output of said power converter; and said control circuit being operated to receive said pulse signals for turning on/off said power-switch set; wherein said feedback signal is correlated to said output of said power converter; said pulse signals are generated for rectifying and regulating said power converter; and the polarity of said pulse signals determines the on/off states of said power-switch set.