Closed Loop Adaptive Voltage Scaling
AssigneeTexas Instruments Incorporated
InventorsJose Luis Flores, Anthony M. Hill
Life of this patent
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Abstract
An integrated circuit is provided with a set of sensors for scaling voltage based on performance of the integrated circuit. The set of sensors are monitored, and sensor provides an output value indicative of a performance metric of the integrated circuit. The output values from the set of sensors are combined using a calibrated model to determine when a threshold value is reached. A change to an operating voltage for a portion of the integrated circuit is initiated in response to reaching the threshold.
Claims18
A method for scaling voltage in an integrated circuit, the method comprising:
- monitoring at least two sensors on the integrated circuit, wherein each sensor provides an output value indicative of a performance metric of the integrated circuit;
- combining the output values from the at least two sensors using a performance model to determine when a threshold value is reached;
- and
- initiating a change to an operating voltage for a portion of the integrated circuit in response to reaching the threshold.
A system comprising:
- a processing module formed on an integrated circuit;
- a plurality of performance sensors formed on the integrated circuit;
- a power management controller coupled to the plurality of performance sensors, wherein the power management controller is configured combine output values from the plurality of performance sensors using a performance model to determine when a threshold value is reached for the integrated circuit and to initiate a change to a supply voltage for a portion of the integrated circuit in response to reaching the threshold.
Dependencies are inferred from the claim text.