Abstract: The optimal LLC resonant converter with the great performance in wide range of load and frequency is described in this paper. The output voltage can be remained stable by changing the frequency in different input/load conditions. It can realize the high efficiency and high density. The LLC resonant converter is simplified as the FMA model firstly to analyse its operating characteristics. These characteristics then can be verified by simulation results. The practical circuit is also built on PCB to prove it work properly.
DOI: *As the DOI is a unique identifier, it is already available in the pdf version. **The DOI link will be activated in the first midst of January 2026.
WSEAS Transactions on Circuits and Systems, ISSN / E-ISSN: 1109-2734 / 2224-266X, Volume 18, 2019, Art. #12