An efficient digitally controlled of RGB driver for LED pixels

The RGB LEDs are used for producing different colours and different intensities. These LEDs are generally driven by constant current sources because their colours and brightness are directly related to their forward current. This paper proposes a digital control of the DC-DC converter to provide acc...

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Main Authors:	Shaheer Shaida, Durrani, Abu Zaharin, Ahmad
Format:	Conference or Workshop Item
Language:	English
Published:	IEEE Xplore Digital Library 2017
Subjects:	TK Electrical engineering. Electronics Nuclear engineering
Online Access:	http://umpir.ump.edu.my/id/eprint/20473/ http://umpir.ump.edu.my/id/eprint/20473/ http://umpir.ump.edu.my/id/eprint/20473/7/An%20efficient%20digitally%20controlled%20of%20RGB%20driver%20for%20LED%20pixels1.pdf

id	ump-20473
recordtype	eprints
spelling	ump-204732019-04-05T03:32:57Z http://umpir.ump.edu.my/id/eprint/20473/ An efficient digitally controlled of RGB driver for LED pixels Shaheer Shaida, Durrani Abu Zaharin, Ahmad TK Electrical engineering. Electronics Nuclear engineering The RGB LEDs are used for producing different colours and different intensities. These LEDs are generally driven by constant current sources because their colours and brightness are directly related to their forward current. This paper proposes a digital control of the DC-DC converter to provide accurate currents for the RGB LED driver for achieving a high efficiency and accuracy of load current. The load current accuracy is an essential index for a high performance LED driver. The proposed maintains the current source for the minimum drive of the voltage across the LEDs which lead to reduce power dissipation in the MOSFET and increase efficiency in the LEDs’ string. The RGB LEDs use three different voltage sources as each RGB colour requires different drive voltages. The proposed LED driver system is also able to dim LEDs in the pixel through pulse width modulation signals as dimming signals. These dimming signals also work as a reference voltage for the current controllers to regulate the load current. The proposed model is simulated in MATLAB/Simulink environment, and the results are verified accordingly. With 12V supply voltage, the efficiency of RGB LEDs are 93%, 97% and 97% respectively. IEEE Xplore Digital Library 2017 Conference or Workshop Item PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/20473/7/An%20efficient%20digitally%20controlled%20of%20RGB%20driver%20for%20LED%20pixels1.pdf Shaheer Shaida, Durrani and Abu Zaharin, Ahmad (2017) An efficient digitally controlled of RGB driver for LED pixels. In: 4th IEEE International Conference On Engineering Technologies and Applied Sciences (ICETAS 2017), 29 November-1 December 2017 , AMA International University, Bahrain. pp. 1-6.. https://doi.org/10.1109/ICETAS.2017.8277843
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TK Electrical engineering. Electronics Nuclear engineering
spellingShingle	TK Electrical engineering. Electronics Nuclear engineering Shaheer Shaida, Durrani Abu Zaharin, Ahmad An efficient digitally controlled of RGB driver for LED pixels
description	The RGB LEDs are used for producing different colours and different intensities. These LEDs are generally driven by constant current sources because their colours and brightness are directly related to their forward current. This paper proposes a digital control of the DC-DC converter to provide accurate currents for the RGB LED driver for achieving a high efficiency and accuracy of load current. The load current accuracy is an essential index for a high performance LED driver. The proposed maintains the current source for the minimum drive of the voltage across the LEDs which lead to reduce power dissipation in the MOSFET and increase efficiency in the LEDs’ string. The RGB LEDs use three different voltage sources as each RGB colour requires different drive voltages. The proposed LED driver system is also able to dim LEDs in the pixel through pulse width modulation signals as dimming signals. These dimming signals also work as a reference voltage for the current controllers to regulate the load current. The proposed model is simulated in MATLAB/Simulink environment, and the results are verified accordingly. With 12V supply voltage, the efficiency of RGB LEDs are 93%, 97% and 97% respectively.
format	Conference or Workshop Item
author	Shaheer Shaida, Durrani Abu Zaharin, Ahmad
author_facet	Shaheer Shaida, Durrani Abu Zaharin, Ahmad
author_sort	Shaheer Shaida, Durrani
title	An efficient digitally controlled of RGB driver for LED pixels
title_short	An efficient digitally controlled of RGB driver for LED pixels
title_full	An efficient digitally controlled of RGB driver for LED pixels
title_fullStr	An efficient digitally controlled of RGB driver for LED pixels
title_full_unstemmed	An efficient digitally controlled of RGB driver for LED pixels
title_sort	efficient digitally controlled of rgb driver for led pixels
publisher	IEEE Xplore Digital Library
publishDate	2017
url	http://umpir.ump.edu.my/id/eprint/20473/ http://umpir.ump.edu.my/id/eprint/20473/ http://umpir.ump.edu.my/id/eprint/20473/7/An%20efficient%20digitally%20controlled%20of%20RGB%20driver%20for%20LED%20pixels1.pdf
first_indexed	2023-09-18T22:29:32Z
last_indexed	2023-09-18T22:29:32Z
_version_	1777416192553648128

An efficient digitally controlled of RGB driver for LED pixels

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