LED auto-detect system for wide output voltage range LED drivers
US10616971B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2018 |
| Grant date | Apr 7, 2020 |
| Priority date | — |
| Expiry date | Oct 17, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/44
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of managing an output voltage of a LED driver to prevent damage to a LED load coupled thereto from a transient current is described. The method includes energizing a LED driver coupled to a microcontroller circuit. The microcontroller circuit samples a plurality of signals from the LED driver circuit. Moreover, the microcontroller circuit determines if an interruption event has occurred. The interruption event may include a main voltage supply interruption, intermittently removing and reconnecting a load, such as a loose LED load, and hot-swapping one LED load for another. The method further includes preventing a transient current from damaging the LED load if the interruption event has occurred. A system including circuits related to the method are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.