Optimal Design of the Planar Transformer Based on Its Multi-physics Field Coupling Characteristics

Integration, high reliability and high power density have become the research hotspot of modern high-frequency power converter equipment. More and more research on planar transformers in order to improve the power density of electronic devices. Taking planar transformer as the research object, combined with its technical indicators. This paper is applied to the half-bridge LLC resonant converter system, based on multi-physics simulation and experiments, the design and optimization of planar transformers are realized. The design and optimization of high-frequency PCB planar transformers are taken as the research goal, a high-frequency equivalent model is established, and it is calculated in electromagnetic simulation software. The optimization is carried out from the two aspects of loss characteristics and structural parameters, which has certain reference significance for the design of PCB type planar transformers in similar high-frequency, low-voltage and high-current applications.