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Method of suppressing electromagnetic interference emission

  • US 9,203,293 B2
  • Filed: 06/07/2013
  • Issued: 12/01/2015
  • Est. Priority Date: 06/11/2012
  • Status: Active Grant
First Claim
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1. A method of regulating a power converter having a switching circuit, the method comprising:

  • a. selectively drawing power from a power supply according to a control signal used to drive the switching circuit;

    b. generating a low frequency modulation signal when the switching circuit draws power from the power supply, and discontinuing generation of the low frequency modulation signal when the switching circuit is not drawing power from the power supply; and

    c. applying the low frequency modulation signal so as to generate a modulated control signal that is modulated according to the low frequency modulation signal.

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