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

Volume

1

fYear

2011

fDate

8-9 Sept. 2011

Firstpage

260

Lastpage

263

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering and Automation Conference (PEAM), 2011 IEEE

Conference_Location

Wuhan

Print_ISBN

978-1-4244-9691-4

Type

conf

DOI

10.1109/PEAM.2011.6134850

Filename

6134850