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SELF-OSCILLATING CONVERTER

  • US 20090058375A1
  • Filed: 08/13/2008
  • Published: 03/05/2009
  • Est. Priority Date: 04/03/2006
  • Status: Active Grant
First Claim
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1. A self-oscillating converter including a load capacitor with a negligibly small equivalent series resistor and a feedback loop with a comparator to which a voltage difference between a reference voltage and an output voltage of the converter is applied, comprising:

  • a first auxiliary feedback path from an output node to a first differential input of the comparator, the first auxiliary feedback path having a first RC time constant;

    a second auxiliary feedback path from the output node to a second differential input of the comparator, the second auxiliary feedback path having a second RC time constant different from the first time constant; and

    circuitry for adding the differential voltage between the first and second differential inputs to the voltage difference applied to the comparator.

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