大功率差相移铁氧体隔离器散热关键因素分析  

Key factor affecting the heat dissipation of high power differential phase shift ferrite isolator

作　　者：张志红 李鹏 朱家辉 王斌[1] 郭刚 ZHANG Zhi-hong;LI Peng;ZHU Jia-hui;WANG Bin;GUO Gang(Southwest Institute of Applied Magnetics,Mianyang 621000,China;School of Energy and Environmental Engineering,Southeast University,Nanjing 211189,China)

机构地区：[1]西南应用磁学研究所,四川绵阳621000 [2]东南大学能源与环境学院,江苏南京211189

出　　处：《磁性材料及器件》2022年第5期68-72,共5页Journal of Magnetic Materials and Devices

基　　金：四川省科技计划资助项目(2020JDJQ0079)。

摘　　要：散热效率是影响大功率差相移式隔离器性能和可靠性的关键性因素。通过仿真分析了相移式隔离器移相段的温升,研究了影响差散热的主要因素。结果表明,胶层导热系数、胶层厚度、铁氧体厚度、插入损耗值是影响移相段温升的主要因素,这其中最重要的因素为胶层的导热系数。因此,改善差相移上铁氧体的粘接工艺,保证其散热效率,可有效保证大功率差相移式隔离器的可靠性。Heat dissipation efficiency is a key factor affecting the performance and reliability of high-power differential phase-shift isolators.The temperature rise of the phase-shifting section of the phase-shifting isolator is simulated and analyzed,and the main factors affecting the differential heat dissipation are studied.The results show that the thermal conductivity of the adhesive layer,the thickness of the adhesive layer,the thickness of the ferrite and the insertion loss are the main factors affecting the temperature rise of the phase-shifting section,and the most important factor is the thermal conductivity of the adhesive layer.Therefore,improving the bonding process of the ferrite on the differential phase shift to ensure its heat dissipation efficiency can effectively ensure the reliability of the high-power differential phase shift isolator.

关 键 词：铁氧体隔离器 差相移 散热 温升 

分 类 号：TN627[电子电信—电路与系统]