Driving circuit capable of enhancing energy conversion efficiency and driving method thereof
US8456105B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2011 |
| Grant date | Jun 4, 2013 |
| Priority date | — |
| Expiry date | Feb 22, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/48
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A driving circuit includes a switch, a detecting unit, and a current supply unit. A first terminal of the switch is used for coupling to a first terminal of a first LED group of a plurality of LED groups and receiving a first voltage, and a third terminal of the switch is used for coupling to a first terminal of a last LED group of the plurality of LED groups. The detecting unit is used for outputting a switch control signal to a second terminal of the switch for controlling turning-on and turning-off of the switch. The current supply unit has a plurality of input current terminals, and a ground terminal coupled to ground, where each input current terminal of the plurality of input current terminals is used for coupling to a second terminal of a corresponding LED group of the plurality of LED groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.