Multi-mode PFC control and control method thereof
US9479046B2 · kind B2 · utility
9Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2014 |
| Grant date | Oct 25, 2016 |
| Priority date | — |
| Expiry date | Mar 29, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P80/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A PFC circuit includes: a switching circuit having a power switch; an on time control circuit for controlling an on time period of the power switch; a first off time control circuit; a second off time control circuit; and a logic circuit selectively controls the power switch working under CCM or DCM; when working under CCM, the first off time control circuit controls an off time period of the power switch and when working under DCM, the second off time control circuit controls the off time period of the power switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.