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Magnetically integrated full wave DC to DC converter

  • US 5,555,494 A
  • Filed: 09/13/1993
  • Issued: 09/10/1996
  • Est. Priority Date: 09/13/1993
  • Status: Expired due to Fees
First Claim
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1. A full wave DC to DC power converter having magnetically integrated transformer and output filter functions for supplying power to a load, comprising:

  • an input voltage source for supplying DC input voltage;

    a transformer primary winding means;

    inverter means adapted to periodically connect said input voltage source alternately across said primary winding means for a first half-cycle of one polarity and a second half-cycle of an opposite polarity;

    a first transformer secondary winding connected in series with a first rectifier means to form a first output circuit;

    a second transformer secondary winding connected in series with a second rectifier means to form a second output circuit;

    said first secondary winding being inductively coupled to said primary winding means by a first magnetic flux which has stored energy such that during said first half-cycle said first output circuit simultaneously conducts current that is a sum of current induced by said primary winding means and magnetizing current induced from said first magnetic flux;

    said second secondary winding being inductively coupled to said primary winding means by a second magnetic flux which has stored energy such that during said second half-cycle said second output circuit simultaneously conducts current that is a sum of current induced by said primary winding means and magnetizing current induced from said second magnetic flux;

    during said first half-cycle said stored energy in said first magnetic flux decreases while simultaneously said stored energy in said second magnetic flux increases, and during said second half-cycle said stored energy in said first magnetic flux increases while simultaneously said stored energy in said second magnetic flux decreases; and

    ,wherein said first magnetic flux and said second magnetic flux exist within a three leg E-core having first, second, and third legs, where said primary winding means is wound on the first leg, said first secondary winding is wound on the second leg, and said second secondary winding is wound on the third leg.

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