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FEEDBACK CONTROL CIRCUIT FOR POWER CONVERTER AND POWER CONVERTER SYSTEM

  • US 20140009982A1
  • Filed: 01/14/2013
  • Published: 01/09/2014
  • Est. Priority Date: 07/05/2012
  • Status: Abandoned Application
First Claim
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1. A feedback control circuit for a power converter, comprising:

  • a sampling network, configured to sample an input of the power converter or an output of the power converter, and output a first sampled signal;

    a filtering network, configured to receive the first sampled signal, and output a second sampled signal;

    the filtering network filtering a ripple signal at a preset frequency out from the first sampled signal, so as to remain signals in the first sampled signal outside the preset frequency, while maintaining a phase delay of the second sampled signal relative to the first sampled signal within a preset range;

    a control and drive circuit, configured to receive the second sampled signal, and regulate a control signal that is to be outputted from the control and drive circuit to the power converter in accordance with the second sampled signal.

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