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:
Nov. 12, 2013
Filed:
Jan. 30, 2012
Applicants:
Kun-yu Lin, Pingtung County, TW;
Tzu-chen Lin, Taipei, TW;
Pei-lun Huang, Hsinchu County, TW;
Inventors:
Assignee:
Richpower Microelectronics Corporation, Grand Cayman, British West Indies, KY;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 1/12 (2006.01); H02M 3/335 (2006.01);
U.S. Cl.
CPC ...
Abstract
A pulse width modulation controller and method for output ripple reduction of a jittering frequency switching power supply detect the current of a power switch of the switching power supply to generate a current sense signal, and adjust the gain or the level of the current sense signal according to the switching frequency of the power switch to adjust the on time of the power switch, to reduce the output ripple of the switching power supply caused by the jittering frequency of the switching power supply.