中国电机工程学报2017，Vol.37Issue(5)：1489-1497,9.DOI:10.13334/j.0258-8013.pcsee.160102
一种双反激集成无电解电容LED驱动电源
An Electrolytic Capacitor-less LED Driver With Integrated Dual Flyback Converter
摘要
Abstract
The electrolytic capacitor is the key component that limits the lifetime of AC/DC light-emitting diode (LED) driver.Therefore,eliminating the electrolytic capacitor in LED drivers has been a key problem.In this paper,a compact electrolytic capacitor-less LED driver with constant output current which is integrated by dual flyback converters was proposed.The driver is highly integrated with simple control.In the proposed circuit,the relationship between input power (pin) and output power (Po) was divided into two modes:Pin＞Poand pin＜Po,in order to avoid double energy conversion.The low-frequency pulse power was balanced by the energy-storage capacitor.Parameter design of the main circuit was addressed following the analysis of operating principle and switching-modes.Finally,a prototype was built to verify the correction and effectiveness of the driver.关键词
LED驱动电源/无电解电容/反激变换器/紧凑型/恒流Key words
LED driver/electrolytic capacitor-less/flyback converter/compact/constant output current分类
信息技术与安全科学引用本文复制引用
汪飞,李林,钟元旭,吴春华,罗建..一种双反激集成无电解电容LED驱动电源[J].中国电机工程学报,2017,37(5):1489-1497,9.基金项目
国家自然科学基金项目(51577113).Project Supported by National Natural Science Foundation of China (51577113). （51577113）
