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Power converter adaptively driven

  • US 5,742,491 A
  • Filed: 08/09/1995
  • Issued: 04/21/1998
  • Est. Priority Date: 08/09/1995
  • Status: Expired
First Claim
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1. A drive circuit for a converter, said converter including an inverter and a synchronous rectifier, said drive circuit comprising:

  • a modulation circuit for generating a drive waveform for controlling said inverter and said synchronous rectifier employing a negative feedback loop;

    a modification circuit, coupled to said modulation circuit, for sensing an operating condition of said converter and shifting a portion of said drive waveform as a function of said operating condition, said modification circuit thereby creating a variable drive waveform from said drive waveform without employing negative feedback; and

    a transmission circuit, coupled to said modification circuit, for applying said variable drive waveform to said converter, thereby allowing a variable nonconcurrent change in state of said inverter and said synchronous rectifier according to said function of said operating condition.

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