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:
Mar. 04, 2014
Filed:
Oct. 07, 2011
Applicants:
Kun-yu Lin, Pingtung, TW;
Pei-lun Huang, Zhubei, TW;
Inventors:
Kun-Yu Lin, Pingtung, TW;
Pei-Lun Huang, Zhubei, TW;
Assignee:
Richpower Microelectronics Corporation, Grand Cayman, KY;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A circuit and method are provided for a power converter to select one from a plurality of current limit signals as a final current limit signal according to the present duty ratio of a power switch for the pulse width modulation of the next cycle, so that the duty ratio of the power switch in the next cycle is prevented from acute variation to eliminate sub-harmonic which otherwise may happen.