Compact Thermal Modeling of Modules Containing Multiple Power LEDs

Marcin Janicki, Przemysław Ptak, Tomasz Torzewicz and Krzysztof Górecki
Additional contact information
Marcin Janicki: Department of Microelectronics and Computer Science, Lodz University of Technology, 90-924 Łódź, Poland
Przemysław Ptak: Department of Marine Electronics, Gdynia Maritime University, 81-255 Gdynia, Poland
Tomasz Torzewicz: Department of Microelectronics and Computer Science, Lodz University of Technology, 90-924 Łódź, Poland
Krzysztof Górecki: Department of Marine Electronics, Gdynia Maritime University, 81-255 Gdynia, Poland

Energies, 2020, vol. 13, issue 12, 1-9

Abstract: Temperature is an essential factor affecting the operation of light-emitting diodes (LEDs), which are often used in circuits containing multiple devices influencing each other. Therefore, the thermal models of such circuits should take into account not only the self-heating effects, but also the mutual thermal influences among devices. This problem is illustrated here based on the example of a module containing six LEDs forming on the substrate a hexagon. This module is supposed to operate without any heat sink in the natural convection cooling conditions, hence it has been proposed to increase the thermal pad area in order to lower the device-operating temperature. In the experimental part of the paper, the recorded diode-heating curves are processed using the network identification by deconvolution method. This allows for the computation of the thermal time constant spectra and the generation of device-compact thermal models. Moreover, the influence of the thermal pad surface area on the device temperature and the thermal coupling between LEDs is investigated.

Keywords: multi-LED lighting modules; device thermal coupling; compact thermal models (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
https://www.mdpi.com/1996-1073/13/12/3130/pdf (application/pdf)
https://www.mdpi.com/1996-1073/13/12/3130/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:13:y:2020:i:12:p:3130-:d:372498

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().