LED driving circuit and a MOSFET switch module thereof
US8058818B2 · kind B2 · utility
4Cited by
1References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2009 |
| Grant date | Nov 15, 2011 |
| Priority date | — |
| Expiry date | Apr 9, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An LED driving circuit and a MOSFET switch module thereof is disclosed, and the MOSFET switch module which is used to control a current of the LED driving circuit. The present invention employs a voltage clamping device to clamp the voltage level of the drain of transistor in the MOSFET switch module when being turned off. Via this way, the requirement for the withstand voltage of the transistor is lowered, and so the cost and power consumption thereof is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.