Method and apparatus for information handling system sleep...

Details Method and apparatus for information handling system sleep... Method and apparatus for information handling system sleep...

2005-05-31

2005-05-31

Lee, Thomas (Department: 2115)

Electrical computers and digital processing systems: support

Computer power control

Power conservation

C715S252000

Reexamination Certificate

active

06901523

ABSTRACT:
An information handling system includes a microprocessor, a storage, a plurality of devices operatively connected to said microprocessor and a run voltage rail, a sleep regulator, and a power management controller. The plurality of devices are further operatively connected to a run voltage power rail to operate in a run mode in response to a run voltage Vrun applied to the run voltage power rail. The sleep regulator provides a sleep voltage Vsleep output. Lastly, the power management controller determines a power savings sleep voltage for a run/sleep mode power management condition and controls the sleep power voltage output of the sleep regulator according to the power savings sleep voltage. The power management controller is further configured to enable select ones of the plurality of devices to be operatively disconnected from the Vrun power rail and connected to the sleep voltage Vsleep output, wherein devices operatively connected to the sleep voltage Vsleep output operate in a sleep power mode.

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