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International Conference on Mechanical Engineering and Technology (ICMET-London 2011)
Editor
Garry Lee
Garry Lee
Information Engineering Research Institute
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ISBN:
9780791859896
No. of Pages:
906
Publisher:
ASME Press
Publication date:
2011
eBook Chapter
103 Multi-Channel Constant Current LED Driver with PWM Boost Converter
By
W. R. Liou
,
W. R. Liou
National Taipei University
, 151 University Road, Sanxia, Taipei, 23741
, Taiwan, China
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Nieva M. Mapula
,
Nieva M. Mapula
National Taipei University
, 151 University Road, Sanxia, Taipei, 23741
, Taiwan, China
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C. H. Chen
,
C. H. Chen
National Taipei University
, 151 University Road, Sanxia, Taipei, 23741
, Taiwan, China
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L. H. Tseng
,
L. H. Tseng
National Taipei University
, 151 University Road, Sanxia, Taipei, 23741
, Taiwan, China
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T. H. Chen
T. H. Chen
National Taipei University
, 151 University Road, Sanxia, Taipei, 23741
, Taiwan, China
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Page Count:
4
-
Published:2011
Citation
Liou, WR, Mapula, NM, Chen, CH, Tseng, LH, & Chen, TH. "Multi-Channel Constant Current LED Driver with PWM Boost Converter." International Conference on Mechanical Engineering and Technology (ICMET-London 2011). Ed. Lee, G. ASME Press, 2011.
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This Paper presents an integrated LED driver with boost converter designed with standard CMOS technology considering Lithium-Ion battery used to drive LED strings that provides overall maximum efficiency of 85% and current error accuracy of 0.0046%. The boost converter operates in PWM voltage mode at 600kHz with stable output voltage as a voltage source to LED driver. A dimmable LED driver with a dimming frequency up to 10MHz is implemented for the application of constant current driving capability for LED displays and LCD backlighting that is used in many portable devices with advanced video and image processing operating at low...
Abstract
Keywords
Introduction
Theoretical Analysis of DC/DC Converter and LED Driver
System Architecture
System Simulation Result and Layout
Conclusion
References
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