High-efficiency LLC resonant converter
US11482940B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 20, 2021 |
| Grant date | Oct 25, 2022 |
| Priority date | — |
| Expiry date | Apr 5, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P80/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high-efficiency LLC resonant converter is disclosed. During a normal operation of the LLC resonant converter, an error amplifier unit generates a modulated voltage signal to a first control unit after receives a data of voltage difference from a detection unit, and then the first control unit calculates an immediate load rate based on the modulated voltage signal. Subsequently, the second control unit receives a first adjustment signal that is outputted by the first control unit, so as to correspondingly generate a switch element controlling signal to a switch element of a DC power supplying unit of the LLC resonant converter, thereby achieving an output voltage modulation of the DC power supplying unit. As such, the LLC resonant converter is controlled to exhibit a conversion efficiency of at least 98% in case of working at any one load state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.