Journal of Electrical Engineering and Automation

Gallium Nitride (GaN) devices, characterized by high frequency, high efficiency, and small size, have become an ideal choice in high-power converters. This paper designs a 100W high-frequency LLC resonant converter based on GaN devices and optimizes its thermal management. It analyzes the advantages of GaN devices in high-frequency applications, and introduces the basic working principles and design requirements of the LLC resonant converter. Subsequently, simulations and experiments verify the high efficiency and stability of the converter under 100W power. For thermal management issues, a comprehensive optimization scheme combining heat dissipation design and active cooling is proposed. The results show that the optimized system has significantly improved thermal stability and conversion efficiency, achieving good working performance.

GaN-based devices; High-frequency LLC resonant converter; Thermal management optimization; Heat dissipation design; Conversion efficiency