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:
Sep. 03, 2013
Filed:
Feb. 01, 2011
Applicants:
Chen-hua Chiu, New Taipei, TW;
Ching-jan Chen, Taipei, TW;
Dan Chen, Taipei, TW;
Wei-hsu Chang, Jubei, TW;
Inventors:
Chen-Hua Chiu, New Taipei, TW;
Ching-Jan Chen, Taipei, TW;
Dan Chen, Taipei, TW;
Wei-Hsu Chang, Jubei, TW;
Assignee:
Rickhtek Tecnology Corp., Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/59 (2006.01);
U.S. Cl.
CPC ...
Abstract
For a multiphase interleaved voltage regulator, an offset cancellation circuit is applied for each phase separately. The current loop gain of each phase is thus increased to mitigate the beat-frequency oscillation in phase currents when the beat frequency is below the bandwidth of the low-pass filter in the offset cancellation circuit, without introducing additional instability issue that is the drawback of increasing current-sensing gain.