DocumentCode
3723824
Title
A new high efficiency boost LED driver circuit for edge-lit LED Backlight Units
Author
Jae-Jung Yun;Hyung-Jin Choe;Cheewoo Lee
Author_Institution
Dept. of Electric and Electrical Engineering, Daegu University, Geongsan, South Korea
fYear
2015
Firstpage
1
Lastpage
3
Abstract
This paper presents a method of improving power conversion efficiency of a boost LED driver circuit for edge-lit LED Backlight Units. The proposed circuit consists of a conventional boost converter and a new passive snubber circuit which consists of an inductor, two capacitors, and two diodes; it improves the problems relating to a high voltage gain and hard switching of the boost LED driver. The proposed boost LED driver was built and tested on the 42 inch edge-lit LED backlight. The power conversion efficiency of the proposed circuit with an input voltage of 24V, an output voltage of 114V, and an operating frequency of 280kHz was measured as 94%; this value was 13.4% higher than that of the conventional boost LED driver circuit.
Keywords
"Light emitting diodes","Driver circuits","Voltage measurement","Capacitors","Switches","Power conversion","Snubbers"
Publisher
ieee
Conference_Titel
TENCON 2015 - 2015 IEEE Region 10 Conference
ISSN
2159-3442
Print_ISBN
978-1-4799-8639-2
Electronic_ISBN
2159-3450
Type
conf
DOI
10.1109/TENCON.2015.7373068
Filename
7373068
Link To Document