Synchronous rectification circuit for power converters

  • US 7,440,298 B2
  • Filed: 08/11/2006
  • Issued: 10/21/2008
  • Est. Priority Date: 08/11/2006
  • Status: Active Grant
First Claim
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1. A synchronous rectification circuit of the power converter, comprising:

  • a power switch, coupled to a transformer for rectification; and

    a switching-control circuit, generating a control signal in response to a magnetized voltage of the transformer, a demagnetized voltage of the transformer, and a magnetization period of the transformer,wherein the control signal is coupled to control the power switch, and the enable period of the control signal is correlated to a demagnetization period of the transformer.

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