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. 15, 2011
Filed:
Mar. 16, 2009
Applicants:
Shian-sung Shiu, Yonghe, TW;
Chung-che Yu, Yonghe, TW;
Juanjuan Liu, Wuxi, CN;
Inventors:
Assignee:
Green Solution Technology Co., Ltd., Taipei County, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/00 (2006.01); H05B 37/02 (2006.01); H05B 39/04 (2006.01); H05B 41/36 (2006.01);
U.S. Cl.
CPC ...
Abstract
An LED driving circuit and a MOSFET switch module thereof is disclosed, and the MOSFET switch module which is used to control a current of the LED driving circuit. The present invention employs a voltage clamping device to clamp the voltage level of the drain of transistor in the MOSFET switch module when being turned off. Via this way, the requirement for the withstand voltage of the transistor is lowered, and so the cost and power consumption thereof is reduced.