Power managing apparatus

Details Power managing apparatus Power managing apparatus

2007-05-08

2009-02-17

Lincoln, Donovan (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C327S534000, C307S080000, C307S085000

Reexamination Certificate

active

07492215

ABSTRACT:
A power managing apparatus is utilized to control a first supply voltage, a second supply voltage, and a substrate voltage of a digital circuit. The power managing apparatus includes a voltage generating device, for generating a first reference voltage and a second reference voltage; and a voltage switching device, coupled to the voltage generating device, for adjusting the first supply voltage, the second supply voltage, and the substrate voltage. When the digital circuit operates in a first operating mode, the voltage switching device outputs the second reference voltage to be the first supply voltage and the substrate voltage; and when the digital circuit operates in a second operating mode, the voltage switching device outputs the first reference voltage to be the first supply voltage, and outputs the second reference voltage to be the second supply voltage.

REFERENCES:
patent: 6118328 (2000-09-01), Morikawa
patent: 6559708 (2003-05-01), Notani
patent: 6833748 (2004-12-01), Cho
patent: 6914803 (2005-07-01), Yamaoka et al.
patent: 6946865 (2005-09-01), Mizuno et al.
patent: 7123076 (2006-10-01), Hatakeyama et al.

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