PWM voltage regulator circuit, regulating method using the same, and liquid crystal display device
US8922543B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 3, 2011 |
| Grant date | Dec 30, 2014 |
| Priority date | — |
| Expiry date | Feb 27, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/157
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention discloses a PWM voltage regulator circuit, a regulating method using the same, and a liquid crystal display comprising the same. The PWM voltage regulator circuit comprises a PWM voltage regulating module, a feedback module connected with the PWM voltage regulating module, and a control module connected with the feedback module. The control module comprises a programmable image processing chip; and the programmable image processing chip comprises at least one memory bank (bank) and an access circuit. A feedback comparing reference voltage data of the PWM voltage regulating module is stored in a memory bank (bank), and the memory bank (bank) is connected with the feedback module by the access circuit. The invention can quickly regulate a PWM chip output voltage, increase IC generality, and reduce the product cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.