摘要
电解电容性能退化是电源失效的重要原因,等效串联电阻是电解电容状态的重要表征,因此在线监测等效串联电阻成为了开关电源健康监测的重要手段。提出了一种在线监测滤波电容等效串联电阻的方法,构建了BUCK电源等效串联电阻计算模型,设计了滤波电容在线监测电路,在不改变电路结构的情况下实现了对滤波电容的监测。
The degradation of electrolytic capacitance performance is an important cause of power failure,and the equivalent series resistance is an important indicator of the state of electrolytic capacitance.Therefore,on-line monitoring of equivalent series resistance has become an important means of health monitoring of switching power supply.A method of on-line monitoring the equivalent series resistance of filter capacitor is proposed,and the calculation model of equivalent series resistance of BUCK power supply is constructed.Besides,the on-line monitoring circuit of filter capacitor is designed so that the filter capacitance is monitored without changing the circuit structure.
作者
雷登云
段孝星
王力纬
侯波
恩云飞
陈义强
LEI Dengyun;DUAN Xiaoxing;WANG Liwei;HOU Bo;EN Yunfei;CHEN Yiqiang(Science and Technology on Reliability Physics and Application of Electronic Component Laboratory Guangzhou 510610,China;China Electronic Product Reliability and Environmental Testing Research Institute,Guangzhou 510610,China;School of Electronic and Information Engineering,South China University of Technology,Guangzhou 510641,China)
出处
《电子产品可靠性与环境试验》
2019年第2期26-30,共5页
Electronic Product Reliability and Environmental Testing
基金
科技创新基金项目(JWV 1728010)
重点实验室基金项目(JAB 1728170)
广东省自然科学杰出青年基金项目(2015A030306002)
广东特支计划科技创新青年拔尖人才项目(2015TQ01X030)资助
关键词
电解电容
等效串联电阻
降压型开关电源
在线检测
electrolytic capacitor
equivalent series resistance
BUCK power
online monitor
