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Regulator circuits and methods

  • US 10,320,218 B2
  • Filed: 02/03/2017
  • Issued: 06/11/2019
  • Est. Priority Date: 02/08/2016
  • Status: Active Grant
First Claim
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1. A method of regulating supply energy in a digital regulator, comprising:

  • receiving a first digital control code;

    receiving raw energy from a power supply;

    from a power digital-to-analog convertor (DAC), forwarding a portion of the raw energy to a power load, wherein the portion is determined by the first digital control code;

    sensing a physical quantity related to the portion of the raw energy in the power load, and forwarding the sensed physical quantity to an analog-to-digital converter (ADC), wherein the ADC comprises a first clocked comparator and a first digital filter;

    receiving a first reference physical quantity and forwarding it to the ADC;

    receiving a clock signal;

    in the first clocked comparator, at a time of receiving the clock signal, comparing the sensed physical quantity to the first reference physical quantity to obtain a first clocked comparator output signal;

    forwarding the first clocked comparator output signal to the first digital filter;

    in the first digital filter, filtering the first clocked comparator output signal to obtain an updated first digital control code and to allow the sensed physical quantity to lock to the first reference physical quantity; and

    regularly repeating the previous steps with the updated first digital control code to obtain a proportional relation between the sensed physical quantity and the first reference physical quantity.

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