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.:
Date of Patent:
May. 21, 2013
Filed:
Feb. 24, 2012
Applicants:
An-tung Chen, Taoyuan County, TW;
Chih-hao Yang, Tainan, TW;
Inventors:
An-Tung Chen, Taoyuan County, TW;
Chih-Hao Yang, Tainan, TW;
Assignee:
Richtek Technology Corp., Chupei, Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/56 (2006.01);
U.S. Cl.
CPC ...
Abstract
A control circuit and method for a ripple regulator system generate a ripple signal in-phase and synchronous with an inductor current of the ripple regulator system, and extract a ripple information proportional to the amplitude of the ripple signal. The ripple signal is used for triggering control in PWM signal generation to make the ripple regulator system have small ripples and better loop stability simultaneously. The ripple information is used to improve the output offset of the ripple regulator system that is caused by the ripple signal.