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Article

Influence of a Thermal Pad on Selected Parameters of Power LEDs

1
Department of Marine Electronics, Gdynia Maritime University, Morska 81-87, 81-225 Gdynia, Poland
2
Department of Microelectronics and Computer Science, Technical University of Łódź, Wólczańska 221, 90-924 Łódź, Poland
*
Author to whom correspondence should be addressed.
This paper is an extended version of our paper published in Proceedings of 25th International Workshop on Thermal Investigations of ICs and Systems Therminic 2019, Lecco, Italy, September 27–29 2019, doi:10.1109/THERMINIC.2019.8923795.
Energies 2020, 13(14), 3732; https://doi.org/10.3390/en13143732
Received: 24 June 2020 / Revised: 12 July 2020 / Accepted: 16 July 2020 / Published: 20 July 2020
(This article belongs to the Special Issue Thermal and Electro-thermal System Simulation 2020)
This paper is devoted to the analysis of the influence of thermal pads on electric, optical, and thermal parameters of power LEDs. Measurements of parameters, such as thermal resistance, optical efficiency, and optical power, were performed for selected types of power LEDs operating with a thermal pad and without it at different values of the diode forward current and temperature of the cold plate. First, the measurement set-up used in the paper is described in detail. Then, the measurement results obtained for both considered manners of power LED assembly are compared. Some characteristics that illustrate the influence of forward current and temperature of the cold plate on electric, thermal, and optical properties of the tested devices are presented and discussed. It is shown that the use of the thermal pad makes it possible to achieve more advantageous values of operating parameters of the considered semiconductor devices at lower values of their junction temperature, which guarantees an increase in their lifetime. View Full-Text
Keywords: power LEDs; thermal pads; thermal resistance; measurements; optical efficiency; self-heating; electronics cooling power LEDs; thermal pads; thermal resistance; measurements; optical efficiency; self-heating; electronics cooling
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MDPI and ACS Style

Górecki, K.; Ptak, P.; Torzewicz, T.; Janicki, M. Influence of a Thermal Pad on Selected Parameters of Power LEDs. Energies 2020, 13, 3732. https://doi.org/10.3390/en13143732

AMA Style

Górecki K, Ptak P, Torzewicz T, Janicki M. Influence of a Thermal Pad on Selected Parameters of Power LEDs. Energies. 2020; 13(14):3732. https://doi.org/10.3390/en13143732

Chicago/Turabian Style

Górecki, Krzysztof, Przemysław Ptak, Tomasz Torzewicz, and Marcin Janicki. 2020. "Influence of a Thermal Pad on Selected Parameters of Power LEDs" Energies 13, no. 14: 3732. https://doi.org/10.3390/en13143732

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