Paper Info
Title
A high efficiency boost white LED driver with an integrated Schottky diode
Abstract
Size and battery life are important issues for portable devices. White light-emitting diodes (WLEDs) have thus replaced cold cathode fluorescent lamps as backlight sources. Since WLEDs are small and highly efficient, a good WLED backlight driver design can reduce the size of portable devices and extend their operation time. This paper proposes a high efficiency boost WLED driver with an integrated Schottky diode. The DC-DC converter structure allows high efficiency and the on-chip compensator and Schottky diode reduce the board area. The driver also enhances the substrate noise immunity. The simulation results show that the substrate noise was reduced from ±1.8 to ±0.8 V. The driver was fabricated in the TSMC 0.25-μm bipolar-CMOS-DMOS process. For a load of six VLEDs at an input voltage of 4.3 V, the power efficiency was 91.6%.
Year
DOI
Venue
2010
10.1109/APCCAS.2010.5775089
APCCAS
Keywords
Field
DocType
high efficiency,cmos integrated circuits,driver circuits,tsmc bipolar-cmos-dmos process,substrate noise immunity,white light-emitting diode backlight driver design,dc-dc power convertors,wled driver,portable device,integrated schottky diode,boost white led driver,schottky diodes,voltage 4.3 v,light emitting diodes,on-chip compensator,battery life,dc-dc converter structure,size 0.25 mum,power efficiency,cold cathode fluorescent lamp,chip,schottky diode
Electrical efficiency,Cold cathode,Computer science,Voltage,Diode,CMOS,Electronic engineering,Backlight,Schottky diode,Light-emitting diode,Electrical engineering
Conference
ISBN
Citations 
PageRank 
978-1-4244-7454-7
0
0.34
References 
Authors
7
6
Name
Order
Citations
PageRank
Yuan-Ta Hsieh1192.32
Bin-da Liu256366.56
Jian-Fu Wu331.55
Chiao-Li Fang430.87
Hann-Huei Tsai5219.22
Ying-zong Juang63813.94