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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.

Patent No.:

US 7352159 B1

PDFFull Text
Date of Patent:
Apr. 01, 2008

Filed:

Apr. 22, 2005

System and method for managing negative voltage in a power supply overvoltage failure event

Applicants:

Shiguo Luo, Austin, TX (US);

Leszek Brukwicz, Austin, TX (US);

Merle Wood, Round Rock, TX (US);

Guangyong Zhu, Austin, TX (US);

Inventors:

Shiguo Luo, Austin, TX (US);

Leszek Brukwicz, Austin, TX (US);

Merle Wood, Round Rock, TX (US);

Guangyong Zhu, Austin, TX (US);

Assignee:

Dell Products L.P., Round Rock, TX (US);

Attorneys:

Hamilton & Terrile, LLP

Robert W. Holland

Primary Examiner:

Adolf Berhane

Int. Cl.
CPC ...
G05F 1/40 (2006.01);
U.S. Cl.
CPC ...
Abstract

A synchronous Buck voltage regulator accepts an input voltage to provide a regulated output voltage to an information handling system processing component, such as a CPU. Input voltage is regulated by a control MOSFET, a synchronous MOSFET and a regulator controller that controls the output by controlling the control and synchronous MOSFETs. The synchronous MOSFET handles overvoltage events output from the control MOSFET by interfacing an inductor-capacitor tank circuit to reduce the overvoltage. A negative voltage protection MOSFET driver associated with the regulator controller monitors for negative voltage events that result from the interfacing of the inductor-capacitor tank circuit and selectively decouples the inductor-capacitor tank circuit if the negative voltage event is associated with a predetermined condition. The negative voltage protection MOSFET driver maintains the interface of the inductor-capacitor tank circuit if the overvoltage event is associated with a failed control MOSFET.

Find Patent Forward Citations

Luo, Shiguo. (2008). System and method for managing negative voltage in a power supply overvoltage failure event (U.S. Patent No. 7352159). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7352159

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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