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Power management in a power-constrained processing system

  • US 7,779,276 B2
  • Filed: 03/05/2007
  • Issued: 08/17/2010
  • Est. Priority Date: 03/05/2007
  • Status: Active Grant
First Claim
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1. A method of managing power in a processing system, comprising:

  • providing a net power limit to a plurality of devices within the processing system;

    detecting power consumption for each of the plurality of devices;

    dynamically apportioning the net power limit among the plurality of devices according to their detected power consumption to provide substantially equal power margins to the devices, wherein the power margin of each device is the difference between the apportioned power limit of the device and the power consumption of the device;

    communicating each apportioned power limit to an associated one of a plurality of local controllers each coupled to an associated one of the plurality of devices; and

    using each local controller to limit the amount of power to the associated device within the apportioned power limit of that local controller.

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