PWM control circuit, flyback converter and method for controlling PWM
US9083248B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 2013 |
| Grant date | Jul 14, 2015 |
| Priority date | — |
| Expiry date | Jan 12, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed herein are a PWM control circuit, a flyback converter, and a PWM control method. The PWM control circuit includes: a peak storing and reference signal generating unit storing a peak value of one period of a feedback signal from a secondary side output and inverting the peak signal and outputting the inverted peak signal as a reference signal; and a PWM control signal generating unit generating a PWM control signal by using an output obtained by comparing the reference signal with a reference waveform from the peak storing and reference signal generating unit. In addition, the flyback converter including the same and the method for controlling PWM are proposed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.