Abstract: Embodiments of LED driver circuits and the associated methods are disclosed herein. In one embodiment, the LED driver circuit comprises a switch-mode converter, a controller, a feedback circuit, and a gating circuit. The feedback circuit includes a current balance circuit. The gating circuit is responsive to both a current feedback signal and a voltage feedback signal and is configured to select one of them as the feedback signal.
Type:
Grant
Filed:
March 15, 2011
Date of Patent:
December 9, 2014
Assignee:
Monolithic Power Sytems, Inc.
Inventors:
Jin Hu, Lei Du, Yuancheng Ren, Junming Zhang, Zhijun Ye