LED显示驱动电源输入电容的纹波及失效分析  

Ripple and Failure Analysis of Input Capacitance of LED Display Driver Power Supply

作　　者：蒋冬初 姚春梅 贾明 顾善华 JIANG Dongchu;YAO Chunmei;JIA Ming;GU Shanhua(College of Information and Electronic Engineering, Hunan City University, Yiyang, Hunan 413000, China;Hunan Key Laboratory ofAll-solid-state Energy Storage Materials and Devices, Yiyang, Hunan 413000, China;Hunan Aihua Group Co., Ltd., Yiyang, Hunan 413000 China;Hunan Huahui New Energy Co., Ltd., Yiyang, Hunan 413000 China)

机构地区：[1]湖南城市学院信息与电子工程学院,湖南益阳413000 [2]全固态储能材料与器件湖南省重点实验室,湖南益阳413000 [3]湖南艾华集团股份有限公司,湖南益阳413000 [4]湖南华慧新能源股份有限公司,湖南益阳413000

出　　处：《湖南城市学院学报（自然科学版）》2018年第6期48-52,共5页Journal of Hunan City University:Natural Science

基　　金：全固态储能材料与器件湖南省重点实验室项目(2017TP1024);湖南省普通高等学校教学改革研究项目(湘教通[2016]400号);科技部国家重点研发计划项目(2018YFB0104200)

摘　　要：LED显示驱动电源的整机性能与输入铝电解电容器有着紧密联系.根据铝电解电容的基本特性和LED显示驱动电源的基本原理,以及铝电解电容器的纹波电流和失效机理,通过实例对超薄大功率LED显示驱动电源输入滤波电容的纹波电流和失效进行了测试和分析,为铝电解电容器应用中的合理选用、纹波电流的准确测量和失效分析提供了思路和依据.The performance of LED display drive power supply is closely related to the input aluminium electrolytic capacitor.According to the basic characteristics of aluminium electrolytic capacitor and the basic principle of LED display drive power supply,and the ripple current and failure mechanism of aluminium electrolytic capacitor,the ripple current and failure of input capacitor of ultra-thin and high-power LED display drive power supply are tested and analyzed through examples.It provides ideas and basis for rational selection of aluminium electrolytic capacitors,accurate measurement of ripple current and failure analysis of capacitors.

关 键 词：电容 纹波电流 失效 LED 

分 类 号：TN609[电子电信—电路与系统]