Two-channel LED driver and the control method thereof
US9913332B2 · kind B2 · utility
1Cited by
7References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 21, 2017 |
| Grant date | Mar 6, 2018 |
| Priority date | — |
| Expiry date | Jun 21, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A two-channel LED driver adopts one power stage to provide a constant drive current to drive a first channel LED and a second channel LED, and to provide a power supply voltages to power a smart module. The two-channel LED driver controls the total current flowing through the first channel LED and the second channel LED according to a first dimming signal input by users through the smart module, and controls the dimming ratio between the two channels according to a second dimming signal. The two-channel LED driver provides high performance with simple circuit structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.