Universal input and wide output function for light emitting diode (LED) driver
US9655181B2 · kind B2 · utility
0Cited by
2References
17Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 13, 2014 |
| Grant date | May 16, 2017 |
| Priority date | — |
| Expiry date | Apr 28, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/3725
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Techniques are described for controlling an amount of current flowing through one or more light-emitting-diodes (LEDs), without sensing input and/or output voltage, so that the amount of current flowing through the one or more LEDs is approximately equal to a target current level. The techniques provide for coarse and fine tuning of the amount of time a transistor, through which the current flows, is turned on to control the amount of current flowing through the one or more LEDs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.