Patent ID: 7764516
Filing Date: 2010-07-27
Classification: H02M,Y02B

Abstract:
1. A synchronous regulation power converter, comprising: a secondary-side switching circuit coupled to an output of the power converter to generate a pulse signal and a synchronous signal in response to a feedback signal; an isolation device coupled to the secondary-side switching circuit for transferring the synchronous signal from a secondary side of the power converter to a primary side of the power converter; a primary-side switching circuit generating a switching signal coupled to switch a primary winding of a transformer in response to the synchronous signal; and a synchronous switch having a power switch set and a control circuit, wherein the power switch set is coupled from a secondary winding of the transformer to the output of the power converter and is operated to receive the pulse signal for turning on or turning off the power switch set according to the polarity of the pulse signal, the feedback signal is correlated to the output of the power converter, and the pulse signal is generated for rectifying and regulating the power converter.