Patent · US Active

Power systems for driving light emitting diodes and associated methods of control

US8907592B2 · kind B2 · utility

4Cited by

3References

12Claims

0Family size

Assignee

Monolithic Power Systems, Inc. · US

Inventors

Jin-Kui Hu · Kunshan, CN
Lei Du · Beijing, CN
Yuancheng Ren · Hangzhou City, CN
Junming Zhang · Berlin, DE
Zhijun Ye · Hangzhou City, CN

Key dates

Filing date	Mar 15, 2011
Grant date	Dec 9, 2014
Priority date	—
Expiry date	Sep 22, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02B20/30
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.