Systems and methods for driving light-emitting diodes
US8188676B2 · kind B2 · utility
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4References
2Claims
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Key dates
| Filing date | May 3, 2011 |
| Grant date | May 29, 2012 |
| Priority date | — |
| Expiry date | May 3, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
At least some embodiments include a LED driver system. The system includes multiple branches of series-coupled LEDs, multiple current sources, and control logic. Each of the current sources is coupled to a separate branch of series-coupled LEDs. The control logic is coupled to the current sources, and is configured to regulate current through each branch based at least in part on a feedback voltage measured at a node in one of the branches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.