LED driver circuit and electronic device
US9642199B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 21, 2015 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | May 21, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present disclosure provides a light-emitting diode (LED) driver circuit and an electronic device. The LED driver circuit includes a rectifier-filter circuit configured to convert an alternating voltage into a direct voltage; a valley-filling circuit connected to the rectifier-filter circuit and configured to adjust a current waveform from the rectifier-filter circuit; a ringing choke converter (RCC) circuit connected to the valley-filling circuit and configured to control a direct current (DC) output; and a DC output unit connected to the RCC circuit and configured to rectify and filter an output signal from the RCC circuit so as to drive an LED load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.