DocumentCode
1914106
Title
A multi-channel LED driver with accurate current control and adjustable LED numbers
Author
Chia, Chu-Hsiang ; Lei, Pui-Sun ; Chang, Robert Chen-Hao ; Ko, Pei-Wei
Author_Institution
Dept. of Electr. Eng., Nat. Chung Hsing Univ., Taichung, Taiwan
fYear
2012
fDate
14-17 March 2012
Firstpage
1
Lastpage
4
Abstract
This paper presents a multi-channel LED driver with PFM control which channels are independent of the LED numbers. Every channel can have almost the same driving current under different LED numbers. The current error is only 0.054% that is better than the previous design. It is designed by using TSMC 0.35μm 3.3V/5V CMOS technology. The proposed driver with the novel current balance circuit can have 15.6V output voltage and the maximum loading is 150mA.
Keywords
CMOS integrated circuits; DC-DC power convertors; driver circuits; light emitting diodes; PFM DC-DC converter; PFM control; TSMC CMOS technology; current 150 mA; current balance circuit; current control; multichannel LED driver; size 0.35 mum; voltage 15.6 V; voltage 3.3 V; voltage 5 V; Accuracy; Conferences; Light emitting diodes; Lighting; Resistors; Simulation; Voltage control;
fLanguage
English
Publisher
ieee
Conference_Titel
Devices, Circuits and Systems (ICCDCS), 2012 8th International Caribbean Conference on
Conference_Location
Playa del Carmen
Print_ISBN
978-1-4577-1116-9
Electronic_ISBN
978-1-4577-1115-2
Type
conf
DOI
10.1109/ICCDCS.2012.6188918
Filename
6188918
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