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Secure input voltage adjustment in processing devices

  • US 10,209,726 B2
  • Filed: 06/10/2016
  • Issued: 02/19/2019
  • Est. Priority Date: 06/10/2016
  • Status: Active Grant
First Claim
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1. A method of controlling operating voltages for a processing device, the method comprising:

  • initializing a security portion of the processing device after application of input voltages to the processing device as supplied by voltage regulation circuitry according to voltage identifiers (VIDs) established for the processing device;

    in the security portion, generating adjusted input voltages based on at least the VIDs and authenticated voltage offset information stored according to a digitally signed security process, wherein the adjusted input voltages comprise voltages below manufacturer specified operating voltages for the processing device;

    in the security portion, instructing the voltage regulation circuitry to supply the adjusted input voltages to the processing device.

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