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:
Apr. 13, 2010
Filed:
Aug. 30, 2007
Applicants:
Jian-rong Huang, Hsinchu, TW;
Kuo-lung Tseng, Taoyuan County, TW;
Liang Pin Tai, Gueiren Township, Tainan County, TW;
Inventors:
Jian-Rong Huang, Hsinchu, TW;
Kuo-Lung Tseng, Taoyuan County, TW;
Liang Pin Tai, Gueiren Township, Tainan County, TW;
Assignee:
Richtek Technology Corporation, HsinChu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/40 (2006.01); G05F 1/56 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention discloses a method and a circuit for reducing switching ringing in a switching regulator. The switching regulator comprises two transistors, and the two transistors are never simultaneously OFF. A phase lock loop may be provided to fix the output signal frequency of a PWM control circuit to a set frequency.