Systems and methods for minimizing static leakage of an...

Details Systems and methods for minimizing static leakage of an... Systems and methods for minimizing static leakage of an...

2007-10-09

2007-10-09

Zweizig, Jeffrey (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

Reexamination Certificate

active

10996739

ABSTRACT:
To minimize static leakage of an integrated circuit, a charge pump generates a negative voltage to be applied to a “sleep” transistor cascaded to a logic gate of the integrated circuit. An adaptive leakage controller determines continuously or periodically whether to adjust the negative voltage to minimize the static leakage. A negative voltage regulator adjusts the negative voltage depending on the determination. Some embodiments determine whether to adjust the negative voltage by monitoring one or more parameters of the sleep transistor. Some embodiments determine whether to adjust the negative voltage by monitoring one or more parameters of an emulated sleep transistor.

REFERENCES:
patent: 6021056 (2000-02-01), Forbes et al.
patent: 6198342 (2001-03-01), Kawai
U.S. Appl. No. 10/840,893, filed May 7, 2004, Barry Alan Hoberman, Managing Power on Integrated Circuits Using Power Islands.

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