Power converter with isolated and regulated stages

CAFC
  • US 7,272,021 B2
  • Filed: 04/20/2006
  • Issued: 09/18/2007
  • Est. Priority Date: 01/24/1997
  • Status: Expired due to Fees
First Claim
Patent Images

1. A power converter system comprising:

  • a normally non-regulating isolation stage comprising;

    a primary winding circuit;

    a secondary winding circuit coupled to the primary winding circuit, the secondary winding circuit comprising a secondary transformer winding in series with a controlled rectifier having a parallel uncontrolled rectifier, the secondary winding circuit providing a normally non-regulated output of the isolation stage; and

    a control circuit which controls duty cycle of the primary winding circuit, the duty cycle causing substantially uninterrupted flow of power through the primary and secondary winding circuits during normal operation; and

    a plurality of non-isolating regulation stages, each receiving the non-regulated output of the isolation stage and regulating a regulation stage output.

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