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...
| Main Authors: | , |
|---|---|
| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
IEEE Xplore Digital Library
2017
|
| Subjects: | |
| Online Access: | 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 |
| _version_ | 1848821111227154432 |
|---|---|
| author | Shaheer Shaida, Durrani Abu Zaharin, Ahmad |
| author_facet | Shaheer Shaida, Durrani Abu Zaharin, Ahmad |
| author_sort | Shaheer Shaida, Durrani |
| building | UMP Institutional Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-15T02:20:09Z |
| format | Conference or Workshop Item |
| id | ump-20473 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T02:20:09Z |
| publishDate | 2017 |
| publisher | IEEE Xplore Digital Library |
| recordtype | eprints |
| repository_type | Digital Repository |
| 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.. (Published) https://doi.org/10.1109/ICETAS.2017.8277843 |
| spellingShingle | TK Electrical engineering. Electronics Nuclear engineering Shaheer Shaida, Durrani Abu Zaharin, Ahmad An efficient digitally controlled of RGB driver for LED pixels |
| title | 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_short | An efficient digitally controlled of RGB driver for LED pixels |
| title_sort | efficient digitally controlled of rgb driver for led pixels |
| topic | TK Electrical engineering. Electronics Nuclear engineering |
| 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 |