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Adaptive boost switching preregulator and method having variable output voltage responsive to input voltage

  • US 5,406,192 A
  • Filed: 08/11/1993
  • Issued: 04/11/1995
  • Est. Priority Date: 01/16/1991
  • Status: Expired due to Term
First Claim
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1. A boost switching preregulator comprisingboost switching power conversion means for converting power from a source of unipolar input voltage for delivery as a unipolar output voltage to a load, andcontrol means which accepts an input indicative of the magnitude of said unipolar output voltage and which controls said boost switching power conversion means such that when the magnitude of said unipolar input voltage is between a minimum value and a maximum value, said unipolar output voltage is varied within a range as a function of the magnitude of said unipolar input voltage, said unipolar output voltage being boosted to be greater than the magnitude of said unipolar input voltage, and the span of said range being at least ten percent of the maximum value of said unipolar output voltage.

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