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High resolution digital pulse width modulator for DC-DC voltage converter

  • US 7,206,343 B2
  • Filed: 01/24/2003
  • Issued: 04/17/2007
  • Est. Priority Date: 01/24/2003
  • Status: Active Grant
First Claim
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1. A method of high resolution pulse width modulation, comprising the steps of:

  • (a) splitting a plurality of digital code words, each into a most significant bits portion and a least significant bits portion;

    (b) generating a plurality of pulse width modulation (PWM) signals having at least one prescribed pulse width parameter defined at least in part in accordance with respective ones of said most significant bits portion, wherein a first of said plurality of PWM signals has a first pulse width parameter defined by a first of said most significant bits portion; and

    (c) generating a next of said plurality of PWM signals, said next PWM signal having an associated pulse width parameter based on a next of said most significant bits portion adjusted by said first least significant bits portion.

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