DC boost topology circuit for backlight driving
US8975828B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2012 |
| Grant date | Mar 10, 2015 |
| Priority date | — |
| Expiry date | Mar 1, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a DC boost topology circuit for backlight driving, which includes a coupling inductor including a primary coil having an end connected to a DC voltage input terminal and an opposite end connected to a secondary coil and a field-effect transistor that has an end grounded. An energy storage module includes a first capacitor and a first diode. The secondary coil has an end connected to the first capacitor and an opposite end connected to an opposite end of the primary coil and the first diode of which an opposite end connected to an opposite end of the first capacitor. A circuit protection unit has an end connected to a common terminal of the first diode and the first capacitor and an opposite end connected to a DC voltage output terminal. The topology circuit has an output voltage that is multiple times of that of known circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.