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:
Aug. 18, 2015
Filed:
May. 03, 2012
Luca Bordin, München, DE;
Shaoping Chen, Shenzhen, CN;
Yuli Chen, Shenzhen, CN;
Shijun Nie, Shenzhen, CN;
Wei Tan, Shenzhen, CN;
Luca Bordin, München, DE;
Shaoping Chen, Shenzhen, CN;
Yuli Chen, Shenzhen, CN;
Shijun Nie, Shenzhen, CN;
Wei Tan, Shenzhen, CN;
OSRAM GmbH, Munich, DE;
Abstract
A dimmable LED driver adapted to be operated with a dimmer that is configured to generate a predetermined conductive angle, wherein the dimmable LED driver comprises: a rectifier configured to convert an alternating current output by the dimmer to a direct current, a buck PFC block configured to adjust an output voltage of the direct current so as to obtain a stable output voltage, a second buck DC/DC block configured to realize output of a constant current after the stable output voltage is realized, a dimming block configured to, after realizing output of the constant current, accomplish a dimming function jointly with the second buck DC/DC block, and an MCU configured to control the buck PFC block, the second buck DC/DC block and the dimming block.