基于MCU的车载充电系统的研究与实现

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中图分类号：U469.72 文献标识码：A 文章编号：1003-8639（2025）10-0072-04

【Abstract】This paper presents an on-board charging system with direct power control using the SR5E1 MCU， includinga 22kW OBCanda 3kW DC/DC.The system is designed forthe highest 80oV high-voltage batery platform andachieves high integrationof theon-board charging system byadopting the third-generation power semiconductor SiC MOSFETand electromagnetic isolation gate driver.The SR5E1 isused toimplement the thre-phase PFC and CLLC in the high-frequencycontrollopandthepeak currentcontrolld phase-shiftedfullbridge DC/DC.Experimentalresultsshow that the OBC efficiency reaches 96.5% ，the CLLC resonant converter maintains soft-switching characteristics over a wide output voltagerange （450～85OV），andtheload transientresponse bandwidthof theDC/DC module is increased to 6.5kHz.

【Key words】SR5E1 MCU；OBC；SiC MOSFET;functional safety;isolated gate driver

0 引言

随着新能源汽车技术的发展，纯电动汽车呈现出爆发式的增长。（剩余5255字）