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SECONDARY CONTROLLER APPLIED TO A SECONDARY SIDE OF A POWER CONVERTER AND OPERATION METHOD THEREOF

  • US 20200136519A1
  • Filed: 07/09/2019
  • Published: 04/30/2020
  • Est. Priority Date: 10/31/2018
  • Status: Active Grant
First Claim
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1. A secondary controller applied to a secondary side of a power converter, the secondary controller comprising:

  • a control signal generation circuit for generating a short-circuited control signal to a short winding switch after a gate control signal to make the short winding switch be turned on according to the short-circuited control signal;

    a voltage detection signal generation circuit coupled to an output terminal of the secondary side of the power converter and the control signal generation circuit for generating a first detection signal to the control signal generation circuit when an output voltage of the power converter is less than a predetermined voltage, wherein the control signal generation circuit further generates a gate pulse control signal according to the first detection signal; and

    a gate control signal generation circuit coupled to the control signal generation circuit for generating a gate pulse signal according to the gate pulse control signal, wherein the gate pulse signal is used for making a primary side of the power converter be turned on.

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