Thermal de-rating power supply for LED loads
US9060408B2 · kind B2 · utility
1Cited by
4References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2013 |
| Grant date | Jun 16, 2015 |
| Priority date | — |
| Expiry date | Apr 12, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Embodiments disclosed herein describe the use of a power supply to provide power to an LED load. The power supply provides a present output current to the LED, and receives a temperature signal representing the operating temperature of the LED. A target output current is determined, for instance based on the temperature signal. An output current rate of change is determined, and the power supply adjusts the output current to the LED at the determined rate of change until the output current is substantially equal to the target current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.