Title :
Constant current LED driver based on flyback structure with primary side control
Author :
Shen, Jingjie ; Liu, Tinzhang ; Wu, Yingqing ; Zheng, Qi
Author_Institution :
Dept. of Autom., Shanghai Univ., Shanghai, China
Abstract :
The design of a 3W constant current LED driver based on flyback structure with primary side control technology is proposed, which eliminates the opto-isolated feedback and secondary regulation circuits which are required in conventional designs. The principle of constant current and constant voltage of the circuit is analyzed, and parameters of the circuit are introduced. The constant current accuracy of the circuit under 60V-260V AC input voltage is 6.4%. The experimental results show that the circuit has the advantages of simple structure, high constant current precision and high stability.
Keywords :
circuit feedback; driver circuits; light emitting diodes; constant current LED driver; constant current accuracy; constant current precision; flyback structure; opto-isolated feedback; power 3 W; primary side control; secondary regulation circuits; voltage 60 V to 260 V; Accuracy; Automation; Educational institutions; Light emitting diodes; MOSFET circuits; Resistors; Voltage control; constant current; flyback; primary side control;
Conference_Titel :
Power Engineering and Automation Conference (PEAM), 2011 IEEE
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-9691-4
DOI :
10.1109/PEAM.2011.6134850
