微功率DC/DC变换器功率开关管损耗分析  

Analysis of the MOS Loss in Micro power DC/DC Converter

作　　者：林彬超 LIN Bin-chao(No.43 Research Institute of CETC,Hefei 230088,China)

机构地区：[1]中国电子科技集团公司第四十三研究所,合肥230088

出　　处：《混合微电子技术》2020年第4期77-82,共6页Hybrid Microelectronics Technology

摘　　要：本文以部分常用功率开关管为研究对象,首先对其工作原理及参数进行介绍;然后基于开关电源反激与正激微功率电路拓扑,分析功率开关管损耗对开关电源电路效率的影响;并通过相关电路的模拟试验,验证理论分析结论;最后结合参数调试,总结开关电源反激与正激微功率电路拓扑中功率开关管的选取方法。This article is based on the study of commonly used power MOS,with the introduction of ts working principle and pa­rameters.Then the influence of the MOS'power loss on circuit efficiency is analyzed on the basis of flyback circuit and forward circuit topologies,which is verified by the simulation test of the relevant circuit.Finally,the selection methods of proper MOS in flyback circuit and forward circuit topologies are proposed with parameter adjustmenl:.

关 键 词：功率开关管 开关电源 微功率 损耗 效率 

分 类 号：TN406[电子电信—微电子学与固体电子学]