Flyback boost circuit, LED backlight driving circuit and liquid crystal device
US9232583B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 2014 |
| Grant date | Jan 5, 2016 |
| Priority date | — |
| Expiry date | Apr 1, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A flyback boost circuit is disclosed. The flyback boost circuit includes a converter, a switch module, a driving module and an output diode. The converter includes n number of primary coils and one secondary col. The switch module includes n number of switch components. Homonymous ends of the n number of primary coils respectively connect to the n number of switch components. The other end of the n number of primary coils respectively connects to an input voltage. The homonymous ends of the secondary coil connect to a positive end of the output diode, and the other end of the secondary coil is grounded. An output capacitor is connected between a negative end of the output diode and the ground. The driving module respectively provides control signals to n number of switch components such that only one of n number of switch components is sequentially turned on within a time period for which the duty cycle ratio equals to D. A sum of the duty cycle ratio of the n number of switch components is D. Wherein n is an integer larger than or equaling to 2. In addition, the LED backlight driving circuit having the above flyback boost circuit and the liquid crystal device having the LED backli…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.