An efficient color LED driver based on self-configuration current mirror circuit

Durrani, Shaheer Shaida and Abu Zaharin, Ahmad and Bakri, Hassan and Khan, Atif Sardar and Nawaz, Asif and Jan, Naveed and Ali Khan, Rehan and Tariq, Rohi and Shah, Ahmed Ali and Bashir, Tariq and Khan, Zia Ullah and Ahmed, Sheeraz (2021) An efficient color LED driver based on self-configuration current mirror circuit. International Journal of Advanced Computer Science and Applications (IJACSA), 12 (2). 347 -356. ISSN 2158-107X ; 2156-5570(Online). (Published)

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The string channel of Color LED driver with precise current balancing is proposed. It is noted that to drive a multiple LEDs string is by using a proper current source, due to the level of the brightness LED depends on the quantity of the current flows. In the production of LEDs, the variation in the forward voltage for each LED has been found significantly high. This variation causes different levels of brightness in LEDs. Then, controlling load current of LED by using a resistor to limit the LED current flowing is considered by associated with the forward voltage, instantly. Current sources have been designed to become immune to the above problem since it regulates the current, and not the voltage which flows through the LEDs. Hence, constant current source is the essential requirement to drive the LEDs. Besides, it is complex for color LEDs, dependent on the number of control nodes and dimming configuration. To arrange an accurate load current for the different sets of string color LEDs, the efficient LED driver is required, in which the current sharing is complement to each LED strings. Therefore, this paper suggests a color LED driver with self-configuration of enhanced current mirrors in multiple LED strings. The load currents have been efficiently balanced among the identical loads and unequal loads. The comparable efficiency of the string color LEDs losses has been shown thoroughly.

Item Type: Article
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Color LED driver; Current mirror circuit; Super diode
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Faculty/Division: Institute of Postgraduate Studies
Faculty of Electrical and Electronic Engineering Technology
Depositing User: Mrs Norsaini Abdul Samat
Date Deposited: 09 Nov 2021 08:04
Last Modified: 09 Nov 2021 08:04
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