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US 6,639,391 B2Granted
Variable switching frequency voltage regulator to optimize power loss
AssigneeIntel Corporation
InventorsLilly Huang, Pavan M. Kumar
Life of this patent
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Abstract
According to one embodiment, a computer system is disclosed. The computer system includes a central processing unit (CPU) and a voltage regulator coupled to the CPU. The voltage regulator operates at a variable switching frequencies based upon the status of a feedback signal which indicates load transient events.
Claims20
A computer system comprising:
- a central processing unit (CPU);
- and
- a voltage regulator, coupled to the CPU, that operates at a first switching frequency whenever a feedback signal is deactivated, and operates at a second switching frequency whenever the feedback signal is activated.
A voltage regulator comprising:
- a power stage;
- and
- control circuitry, coupled to the power stage, to operate the voltage regulator at a variable switching frequency based upon the status of a received feedback signal, wherein the feedback signal is activated whenever a load transient is greater than a predetermined threshold and is deactivated whenever the load transient is less than the predetermined threshold.
A system comprising:
- a load;
- and
- a voltage regulator, coupled to the load, to operate at a first switching frequency whenever a feedback signal activated, and at a second switching frequency whenever the feedback signal is deactivated.
A method comprising:
- operating a voltage regulator at a first switching frequency;
- receiving a first feedback signal from a load indicating that a load transient is greater than a predetermined threshold;
- and
- operating the voltage regulator at a second switching frequency in response to receiving the first feedback signal.
1 more element
Dependencies are inferred from the claim text.