Efficient LLC resonant converter having variable frequency control and fixed frequency phase-shift PWM
US9509225B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2014 |
| Grant date | Nov 29, 2016 |
| Priority date | — |
| Expiry date | Jan 17, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An output voltage of an LLC resonant converter circuit is received. The received output voltage is analyzed to determine whether the received output voltage is within an acceptable operational range. When the output voltage is not within the acceptable operational range and the operational frequency is below a maximum predetermined frequency, the operational frequency of the LLC resonant converter circuit is adjusted. The adjustment of the operational frequency is effective to change the output voltage to a value that is within the acceptable operational range. When the output voltage is not within the acceptable operational range and the operational frequency is above the maximum predetermined frequency, a phase shift in the LLC resonant converter circuit is adjusted. This adjustment is effective to change the output voltage to a value that is within the acceptable operational range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.