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. 11, 2017
Filed:
May. 05, 2016
Huawei Technologies Co., Ltd., Shenzhen, Guangdong, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
A WLED driver and a drive control method. The WLED driver includes 2Nswitches, and each CS module includes 2N switches, where one end of each of N switches in the 2N switches is connected to an output end of an error amplifier, another end of each of the N switches is connected to a gate of each of N NMOS transistors, one end of each of remaining N switches is connected to a negative input end of the error amplifier, and another end of each of the remaining N switches is connected to a positive input end of each of N feedback resistors. After a control circuit generates a clock control signal group Φ. the control circuit controls switching actions of the 2Nswitches on a time-division basis according to the clock control signal group Φ.