The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
May. 23, 2017

Filed:

Jul. 08, 2015
Applicant:

International Business Machines Corporation, Armonk, NY (US);

Inventors:

Hai Cao, Hangzhou, CN;

Si Shi, Shanghai, CN;

Rui Tu, Shanghai, CN;

Bo Qu, Shanghai, CN;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K 17/00 (2006.01); H03K 17/04 (2006.01); H03K 17/56 (2006.01); H03K 19/00 (2006.01);
U.S. Cl.
CPC ...
H03K 17/04 (2013.01); H03K 17/56 (2013.01); H03K 19/0016 (2013.01);
Abstract

A circuit and method for power gating is provided. The circuit includes a switch circuit and a modulation oscillator. The switch circuit is connected between a circuit module and a power network having a target level. The switch circuit receives a control signal at its control signal input terminal to gate a connection between the circuit module and the power network under the control of the control signal. The switch circuit is connected to the circuit module at a first node. A modulation oscillator enabling signal input terminal is connected to a gating signal for enabling the modulation oscillator, a modulation oscillator control signal input terminal is connected to the first node, and an modulation oscillator output terminal is connected to the control signal input terminal of the switch circuit. The oscillation signal outputted from the modulation oscillator is modulated by the level of the first node.


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