Hybrid PSLLC Converter with Integrated Magnetics for Space Power Supply

This paper proposes a hybrid bridge converter combining an inductor-less phase-shift full-bridge (PSFB) and LLC-DCX resonant converter with transformer-inductor integrated magnetics, utilizing the natural soft-switching characteristics of the LLC to achieve soft-switching on all the power switches, thereby improving efficiency. More importantly, the flux of the PSFB transformer and LLC transformer can be cancelled significantly, further reducing magnetic component losses and size. Detailed analysis and optimization of topology's working principles and the integrated transformer are presented. The effectiveness and feasibility of the proposed solution are verified through simulation and experimental results.