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Voltage converter control apparatus, and method

  • US 7,199,537 B2
  • Filed: 01/14/2003
  • Issued: 04/03/2007
  • Est. Priority Date: 01/16/2002
  • Status: Expired due to Term
First Claim
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1. A voltage conversion device having a reactor for temporarily storing energy based on a current from a power source, for converting a voltage of the power source, which is input while utilizing the reactor, into a desired voltage through switching of a switching element to output, comprising:

  • a condition detection circuit for detecting an electromotive voltage and inner resistance of the power source as a condition of the power source; and

    a control circuit for setting a current range of the power source based on output characteristic of the power source corresponding to the detected condition of the power source and for applying switching control to the switch element such that the current of the power source remains within the current range set by a current range setting circuit,whereinthe power source is chargeable and dischargeable, and,an output obtained through conversion into the desired voltage is supplied to a load.

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