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US 2009/0276642 A1Published application
Voltage regulator with suspend mode
AssigneeIntel Corporation
InventorsEdward Burton, Robert Greiner, Anant Deval, Doug Huard
Life of this patent
Estimating the term…
Abstract
A system is disclosed. The system includes a central processing unit (CPU) to operate in one or more low power sleep states, and a power converter. The power converter includes phase inductors; and one or more power switches to drive the phase inductors. The one or more power switches are deactivated during the CPU sleep state.
Claims18
A system comprising:
- a central processing unit (CPU) to operate in one or more power saving states, the one or more power saving states including a sleep state;
- and
- A power converter for supplying power to the CPU through one or more phase inductors, including:
- one or more switches to control the phase inductors, wherein the one or more switches open when the CPU has entered the sleep state;
- wherein the one or more switches close when an output voltage of the power converter falls below a predetermined threshold.
2 more elements
A method comprising:
- determining whether a central processing unit (CPU) has entered a sleep state, the CPU being supplied with power by a power converter through one or more phase inductors, the one or more phase inductors controlled by one or more switches within in the power converter;
- opening the one or more switches when the CPU has entered the sleep state;
- and
- closing the one or more switches when an output voltage of the power converter falls below a predetermined threshold.
1 more element
A power converter for supplying power to a device through one or more phase inductors, comprising:
- one or more switches to control the phase inductors, wherein the one or more switches open when the device has entered a power saving state;
- wherein the one or more switches close when an output voltage of the power converter falls below a predetermined threshold.
Dependencies are inferred from the claim text.