×

DC-to-DC power conversion with high current output

  • US 5,684,683 A
  • Filed: 02/09/1996
  • Issued: 11/04/1997
  • Est. Priority Date: 02/09/1996
  • Status: Expired due to Term
First Claim
Patent Images

1. DC to DC power conversion apparatus, comprising:

  • (a) a transformer having a primary side and a secondary side;

    (b) first and second converter bridges for connecting a DC power source to the primary side of the transformer, each converter bridge including switching devices for connecting and disconnecting the DC power source to the primary side of the transformer and for connecting and disconnecting a unipolar bias voltage source having a voltage of polarity opposite to that of the DC power source to the primary side of the transformer;

    (c) an output side circuit including first and second rectifier structures for connecting the secondary side of the transformer to a load;

    (d) control means for controlling the switching devices to alternately connect the DC source to the primary through the first converter bridge and the second converter bridge to produce a waveform on the secondary side of the transformer which is rectified by the first and second rectifier structures, and for further controlling the switching devices to connect the unipolar bias voltage to the primary side of the transformer to drive a current in a one of the rectifier structures to zero in a period of time after a one of the converter bridges disconnects the DC source from the primary of the transformer and before an other of the converter bridges connects the DC source to the primary of the transformer.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×