A Current-Source 5-Level DC-DC Used for Capacitor-less LED Driver

2nd International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Xu, Shuang^1 ; Bao, Jianyu^2

School of Information and Engineering, Nanchang University, Nanchang, China^1

School of Mechanical and Engineering, Ningbo Institute of Finance and Economics, Ningbo, China^2

关键词: Capacitor-less;    Current sources;    DC circuits;    Driving circuits;    Filter components;    High input power;    LED drivers;    LED lighting;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/490/7/072063/pdf
DOI  :  10.1088/1757-899X/490/7/072063

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Traditional lighting emitting diode (LED) driving circuits generally use electrolytic capacitors as the filter component, and the lifetime of electrolytic capacitor becomes the main limiting factor for extending the lifetime of LED lighting. Therefore, this paper proposes a new current-source 5-level DC-DC circuit to construct the LED driver. It can not only remove large electrolytic capacitors to improve the service life of LED driver, but also the high input power factor can be achieved by 5-level PWM modulation. Finally, the feasibility and effectiveness of such LED driver are verified by simulation results.