摘要
针对数瓦级的LED照明应用,分段式线性驱动电路比传统开关式驱动电路具有更高的性价比。分段式线性LED照明驱动电路因结构组成不同,性能也会存在差异。对两种典型的分段式线性LED照明驱动电路进行了比较研究。宽电压范围输入的实验样机均采用了输入电压自适应以及输入电压静态和动态滞回区域相结合的电流控制策略,实验结果表明:当满足相同的电气要求时,多电流源型分段式线性LED照明驱动电路主电路效率更高、成本较低,而单电流源型分段式LED照明驱动电路输入电流谐波表现更优、电路段数更易扩展以及控制程序较容易编写。
For multi-watt LED illumination applications,multi-segmented linear LED drivers are more cost-effective than traditional switched-mode ones.With different structures,the performances of the multi-segmented linear LED drivers are different.A comparison between two typical multi-segmented linear LED drivers is made.Two experimental prototype LED drivers were implemented with wide voltage range input.Both of them adopted the same input-voltage adaptive current control strategy with several input-voltage static and dynamic hysteresis regions.The experimental results show that when the same electrical requirements are met,the prototype LED driver consisting of multiple current sources has higher efficiency and lower cost,while the prototype LED driver consisting of a single current source has better input current harmonic performance,easier circuit expansion,and easier control programming.
作者
陈怡
陈信勇
谢路耀
张有兵
CHEN Yi;CHEN Xinyong;XIE Luyao;ZHANG Youbing(Zhijiang College of Zhejiang University of Technology,Shaoxing 312030,China;College of Information Engineering,Zhejiang University of Technology,Hangzhou 310023,China)
出处
《浙江工业大学学报》
CAS
北大核心
2020年第2期159-164,共6页
Journal of Zhejiang University of Technology
基金
浙江工业大学2017年度创新性实验项目(SYXM1718)的资助.
关键词
LED照明
分段式线性驱动电路
宽电压范围输入
输入电压自适应
静态和动态相结合的滞回区域
LED illumination
multi-segmented linear driver circuits
wide voltage range input
input-voltage adaptive
input-voltage static and dynamic hysteresis regions
