结合近场扫描的开关电源电磁辐射仿真研究  

Research on Electromagnetic Radiation Simulation of Switching Power Supply Combined with Near-field Scanning

作　　者：高成[1] 张宇亮 岳阳 黄姣英[1] GAO Cheng;ZHANG Yuliang;YUE Yang;HUANG Jiaoying(School of Reliability and System Engineering,Beihang University,Beijing 100191,China;Beijing Institute of Remote Sensing Equipment,Beijing 100854,China)

机构地区：[1]北京航空航天大学可靠性与系统工程学院,北京100191 [2]北京遥感设备研究所,北京100854

出　　处：《电源学报》2024年第6期311-317,共7页Journal of Power Supply

基　　金：技术基础科研项目(JSZL2017601B011)。

摘　　要：针对开关电源模块工作过程中电磁辐射干扰仿真缺少与实际模块工作情况相结合的问题,提出结合近场扫描的解决方案。首先利用Cadence Allegro软件建立开关电源仿真模型,使用Cadence Sigrity软件对开关电源模块进行电磁辐射仿真,得到近场辐射图像和数据。然后搭建电磁辐射近场扫描系统,用于测试开关电源模块电磁辐射干扰,得到开关电源模块在实验室环境下近场电磁辐射云图与电场分布数据。最后,对比近场扫描与仿真得出的电磁辐射分布数据,验证了仿真结果的正确性,精准地定位判定开关模块中的MOSFET开关管器件及周边电路是强度最高的电磁辐射产生源。Aimed at the problem that the simulation of electromagnetic radiation interference of a switching power supply module is not combined with its actual working conditions,a method combined with near-field scanning was proposed.First,a simulation model of the switching power supply was built by software Cadence Allegro,and the software Cadence Sigrity was used to obtain the near-field radiation image and data by performing eletromagnetic radiation simulations of the switching power supply module.Then,a near-field scanning system of electromagnetic radiation was built to test the electromagnetic radiation interference of the switching power supply module,and its near-field electromagnetic radiation cloud map and electric field distribution data were obtained.Finally,by comparing the electromagnetic radiation distribution data obtained from near-field scanning and simulations,the simulation results were verified,and the MOSFET switch tube device and the surrounding circuit in the switching module were determined to be the source of electromagnetic radiation with the highest intensity.

关 键 词：开关电源模块 电磁辐射仿真 近场扫描 Cadence Sigrity软件 Cadence Allegro软件 

分 类 号：TN41[电子电信—微电子学与固体电子学]