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US 6,675,304 B1Granted
System for transitioning a processor from a higher to a lower activity state by switching in and out of an impedance on the voltage regulator
AssigneeIntel Corporation
InventorsEdwin J. Pole, II, Scott R. Rushford
Life of this patent
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Abstract
A voltage regulator may switch in an extra load when the voltage regulator changes from a higher to a lower output level in response to a processor change of state in a processor-based system. The additional load at the lower voltage level in the processor-based system may decrease the latency in the voltage level transistor, improving processor performance.
Claims18
A method comprising:
- transitioning a processor from a higher to a lower activity state;
- switching in an impedance on a voltage regulator at a time when the processor is in a lower activity state;
- and
- switching out said impedance when the voltage regulator output has settled.
1 more element
An article comprising a medium for storing instructions that, if executed, enable a processor-based system to:
- transition a processor to a lower activity state;
- switch in an impedance on a voltage regulator at a time when the processor is in the lower activity state;
- and
- switch out said impedance when the voltage regulator output has settled.
1 more element
A processor-based system comprising:
- a processor;
- a voltage regulator coupled to said processor, said regulator including a voltage regulator output;
- control logic coupled to said processor to selectively switch an impedance on the output of said voltage regulator when the processor is in a lower activity state and to switch out said impedance when the voltage regulator output has settled.
Dependencies are inferred from the claim text.