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:
Mar. 15, 2016
Filed:
Dec. 08, 2013
Dialog Semiconductor Inc., Campbell, CA (US);
Xiaoyan Wang, Milpitas, CA (US);
Chenglong Zhang, Campbell, CA (US);
Guang Feng, Cupertino, CA (US);
Clarita Knoll, San Leandro, CA (US);
Chuanyang Wang, San Jose, CA (US);
Jiang Chen, Cupertino, CA (US);
Liang Yan, Milpitas, CA (US);
Dickson T. Wong, Burlingame, CA (US);
Dialog Semiconductor Inc., Campbell, CA (US);
Abstract
A TRIAC dimmer controller for an LED lamp dynamically adjusts the amount of additional current supplied to the TRIAC dimmer based on the TRIAC dimmer operating mode. A TRIAC dimmer current controller continually senses the TRIAC dimmer current loading and determines a TRIAC dimmer operating mode based on the detected current. The TRIAC dimmer controller compares the detected current with a threshold current value called a TRIAC holding current, and adjusts the amount of bleeder current based on the difference between the detected current and the threshold current value. By continually sensing the TRIAC dimmer current loading, the LED controller regulates the amount of bleeder current supplied to the TRIAC dimmer using a single sink current path to satisfy the TRIAC dimmer current demands of multiple TRIAC dimmer operating modes.