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DC-DC converter having parallel converter circuits

  • US 5,267,136 A
  • Filed: 11/12/1991
  • Issued: 11/30/1993
  • Est. Priority Date: 11/14/1990
  • Status: Expired due to Fees
First Claim
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1. A DC-DC converter connected between a dc power supply and a load, comprising:

  • a first converter circuit which converts input voltage fed from said dc power supply according to a rapidly varying first command signal and generates a lower output voltage than said input voltage, said circuit having a pair of input terminals connected to said dc power supply and a pair of output terminals for outputting said output voltage; and

    at least one second converter circuit which receives input voltage from said dc power supply and generates a constant output voltage converted at a given ratio, said second converter circuit having a pair of input terminals connected to said dc power supply and a pair of output terminals for outputting said constant output voltage;

    said pairs of input terminals of said first and second converter circuits being connected in parallel to said dc power supply, and said output terminals of each circuit being connected in series to said load so that the sum of their output voltages is supplied to said load.

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