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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 9946281 B1

PDFFull Text
Date of Patent:
Apr. 17, 2018

Filed:

Feb. 08, 2017

Limit cycle oscillation reduction for digital low dropout regulators

Applicant:

University of Macau, Macau, CN;

Inventors:

Mo Huang, Macau, CN;

Yan Lu, Macau, CN;

Sai-Wang Sin, Macau, CN;

Seng-Pan U, Macau, CN;

Rui Paulo da Silva Martins, Macau, CN;

Assignee:

University of Macau, Macau, CN;

Attorneys:

Eagle IP Limited

Jacqueline C. Lui

Primary Examiner:

Alex Torres-Rivera

Int. Cl.
CPC ...
G05F 1/00 (2006.01); G05F 1/565 (2006.01); G05F 1/46 (2006.01); G11C 19/28 (2006.01);
U.S. Cl.
CPC ...
G05F 1/565 (2013.01); G05F 1/468 (2013.01); G11C 19/28 (2013.01);
Abstract

A method achieves minimum limit cycle oscillation (LCO) amplitude of a digital low dropout regulator (D-LDO) by adding auxiliary unit power transistors in parallel with the main PMOS array with selected unit strength and LCO mode. An improved D-LDO with reduced LCO amplitude includes an auxiliary power transistor array in selected strength driven by an output of a comparator in parallel with a main power transistor array.

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Huang, Mo. (2018). Limit cycle oscillation reduction for digital low dropout regulators (U.S. Patent No. 9946281). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9946281

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