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Digital logic controller for regulating voltage of a system on chip

  • US 8,689,023 B2
  • Filed: 10/17/2011
  • Issued: 04/01/2014
  • Est. Priority Date: 10/17/2011
  • Status: Active Grant
First Claim
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1. A digital logic controller for regulating a voltage of a system on chip, the digital logic controller comprising:

  • a first input for receiving a first signal, the first signal being a reference signal and having a first property that is at least substantially constant over a range of operating conditions of the system on chip;

    a second input for receiving a second signal, the second signal having a second property that is indicative of an operating condition of the system on chip, the second property being variable over the range of operating conditions of the system on chip;

    an output; and

    a comparator for comparing the first property of the first signal and the second property of the second signal, whereinbased on the comparison, the digital logic controller outputs to a voltage regulator, via the output, a regulation signal for regulating the voltage of the system on chip at or near a target voltage a predetermined amount higher than a minimum operating voltage of the system on chip, wherein the predetermined amount includes a worst case voltage drop in the System on chip due to peak current consumption.

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