电源学报2024，Vol.22Issue(2)：369-377,9.DOI:10.13234/j.issn.2095-2805.2024.2.369
基于无源均流的谐振式无桥型Boost LED驱动电源
Resonant Bridgeless Boost LED Driver Based on Passive Current Balancing
摘要
Abstract
For a traditional Boost power factor correction(PFC)converter,its output voltage must be greater than its in-put voltage,which limits its applications in light emitting diode(LED)drivers to a certain degree.Meanwhile,due to the exis-tence of a rectifier bridge at the input end of the traditional LED driver,the improvement of its efficiency is also confined.In this paper,a bridgeless Boost LED driver based on passive current balancing is proposed,which is based on the topology of a resonant Boost PFC converter.With the introduction of a resonant capacitive current-balancing network,the output current of each LED string can be balanced.In addition,the elimination of the rectifier bridge further improves the system efficiency.Finally,a 140 W prototype with a peak efficiency of 93.64％was built,and experimental results verified the correctness and feasibility of theoretical analysis.关键词
无桥变换器/LED驱动电源/功率因数校正/无源均流Key words
Bridgeless converter/light emitting diode(LED)driver/power factor correction(PFC)/passive current balancing分类
信息技术与安全科学引用本文复制引用
史旭,刘雪山,周群,王春涛..基于无源均流的谐振式无桥型Boost LED驱动电源[J].电源学报,2024,22(2):369-377,9.基金项目
四川大学自贡市校地合作资助项目(2019CDZG-14) （2019CDZG-14）
四川省区域创新合作资助项目(2021YFQ0006)This work is supported by Sichuan University and Zigong Coop-eration under the grant 2019CDZG-14 （2021YFQ0006）
Sichuan Provincial Re-gional Innovation Cooperation Project under the grant 2021YFQ 0006 （）
