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An efficient high power density output power supply for robots

In the application of small and medium power conversion such as power adapter of electronic equipment, the equipment is becoming miniaturized and lightweight, and has higher requirements on efficiency and electromagnetic compatibility. Taking the fact that high efficiency and high power density are the core index of today’s power supply. Meanwhile, the power density and efficiency of DC/DC mode power supply are improved mainly through the following technologies: advanced devices(such as forbidden broadband devices), secondary side control, soft switching technology, magnetic integration, planar transformers, etc. Thus, in this paper, a completely new topology with closed loop control based on the new power semiconductor GaN is chosen to design the power supply with high efficiency and high power density and it can work continuously for 30 minutes at 25℃. It is found out that the designed power supply is verified to be practical combined with the simulation.