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. 20, 2016
Filed:
Dec. 23, 2014
Applicant:
Chengdu Monolithic Power Systems Co., Ltd., Chengdu, CN;
Inventors:
Assignee:
CHENGDU MONOLITHIC POWER SYSTEMS CO., LTD., Chengdu, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/038 (2013.01); G09G 5/00 (2006.01); G09G 3/32 (2016.01); H05B 33/00 (2006.01); H05B 33/08 (2006.01);
U.S. Cl.
CPC ...
G09G 3/32 (2013.01); H05B 33/00 (2013.01); H05B 33/08 (2013.01); G09G 2310/0289 (2013.01); G09G 2330/028 (2013.01);
Abstract
A LED driver, a LED driving method and a controller for LED driver are discussed in the present invention. The LED driver detects the phase of the input signal which is phase cut by a triac from a pre-E-transformer. The LED driver regulates the current flowing through the LED strings by varying the phase of the input signal.