Understanding multi-domain compact modeling of light-emitting diodes

Shailesh, K R (2021) Understanding multi-domain compact modeling of light-emitting diodes. Cogent Engineering, 8 (1). ISSN 2331-1916

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Abstract

The purpose of this work is to understand the theoretical aspects related to the compact multi-domain (Optical, Electrical and Thermal) modeling of light�emitting diodes (LEDs). Prior studies have already deliberated extensively on mod�eling LEDs in multiple domains with diverse levels of intricacies. The need for standardized compact multi-domain models of light-emitting diodes is emphasized. The multi-domain theory explained in this work enables potential end-users to create their own compact multi-domain models of LEDs and study their working in different operating conditions. The end-users can create their own compact multi�domain models of LEDs either from experimental data or from electronic-data�sheets. The procedure for developing mathematical models of LEDs in multiple domains is demonstrated in this work. The reason behind current control of LEDs is explained using multi-domain modeling theory. In what way the problem of ther�mal runaway is handled by driving LEDs with constant current is discussed using the concepts of multi-domain theory. Unlike prior models, it is proposed to model forward voltage as a junction temperature controlled voltage source. Optical power and heating power are represented as junction temperature controlled current sources. The importance of thermal metrics in assessing aging and performance levels is also discussed. This work also recommends minimum parameters required for developing multi-domain compact models of LEDs

Item Type: Article
Uncontrolled Keywords: Analytical models; electrothermal effects; electrical; LED lamps; light emitting diodes; optical; semiconductor device modeling; Thermal; thermal management; heat sink
Subjects: Engineering > MIT Manipal > Electrical and Electronics
Depositing User: MIT Library
Date Deposited: 15 Jul 2021 08:34
Last Modified: 15 Jul 2021 08:34
URI: http://eprints.manipal.edu/id/eprint/156984

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