中图分类号：TN86 文献标志码：A DOI: 10.16157/j.issn.0258-7998.245587
中文引用格式： 徐霆豪，王少宁，刘澳慧. 基于全桥半桥切换LLC谐振变换器的霍尔电源设计[J]. 电子技术应用，2025，51(2)：108-114.
英文引用格式： Xu Tinghao，Wang Shaoning，Liu Aohui. Design of Hall power supply based on full bridge half bridge switching digital LLC resonant converter[J]. Application of Electronic Technique，2025，51(2)：108-114.

Design of Hall power supply based on full bridge half bridge switching digital LLC resonant converter

Abstract： A power processing unit suitable for Hall electric propulsion systems is designed to meet the high input voltage requirements of space missions such as deep space exploration. The LLC resonant converter is studied for half bridge full bridge dynamic topology switching and soft start, achieving high efficiency and wide range output. By establishing a fundamental model of LLC resonant converter, analyzing the characteristic curves of frequency and gain, selecting the values of K and Q, variable frequency control output voltage is achieved, and a low peak full bridge half bridge switching mode based on simultaneous frequency conversion and variable duty cycle is designed. At the same time, in order to meet the soft start function required for electric propulsion, a segmented linear soft start mode based on changing the phase shift angle of LLC resonant converter MOSFET is designed according to the phase-shifting full bridge soft start. In order to verify the design performance, a 5 kW all digital prototype was designed, with an input of 400 V and an output of 200 V to 1 000 V. The results showed that it can achieve a wide range and high efficiency output of the LLC resonant converter.

Key words : power processing unit；LLC resonant converter；full bridge half bridge switching；digital control；soft start