Digital dynamic delay modulator and the method thereof for flyback converter
US8363429B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2011 |
| Grant date | Jan 29, 2013 |
| Priority date | — |
| Expiry date | Aug 5, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/33515
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A digital dynamic delay modulator and the method thereof are applied to a flyback converter. A first input voltage signal from the flyback converter is received and compared with a threshold voltage to determine whether a counting condition is matched. When the counting condition is matched, an integer predetermined count number is counted to determine a delay time. After finishing the counting, a first output signal is generated to turn on a switching device for the flyback converter. The slope of the first input voltage signal is detected when the switching device is turned on, and the slope is used to adjust the count number with integer increment/decrement. Therefore, the delay time for switching the flyback converter can be precisely controlled in digital and dynamic manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.