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Influence of a Thermal Pad on Selected Parameters of Power LEDs

Author

Listed:
  • Krzysztof Górecki

    (Department of Marine Electronics, Gdynia Maritime University, Morska 81-87, 81-225 Gdynia, Poland)

  • Przemysław Ptak

    (Department of Marine Electronics, Gdynia Maritime University, Morska 81-87, 81-225 Gdynia, Poland)

  • Tomasz Torzewicz

    (Department of Microelectronics and Computer Science, Technical University of Łódź, Wólczańska 221, 90-924 Łódź, Poland)

  • Marcin Janicki

    (Department of Microelectronics and Computer Science, Technical University of Łódź, Wólczańska 221, 90-924 Łódź, Poland)

Abstract

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.

Suggested Citation

  • Krzysztof Górecki & Przemysław Ptak & Tomasz Torzewicz & Marcin Janicki, 2020. "Influence of a Thermal Pad on Selected Parameters of Power LEDs," Energies, MDPI, vol. 13(14), pages 1-13, July.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:14:p:3732-:d:386984
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    References listed on IDEAS

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    1. Marcin Janicki & Tomasz Torzewicz & Przemysław Ptak & Tomasz Raszkowski & Agnieszka Samson & Krzysztof Górecki, 2019. "Parametric Compact Thermal Models of Power LEDs," Energies, MDPI, vol. 12(9), pages 1-10, May.
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    Cited by:

    1. Krzysztof Górecki & Przemysław Ptak & Marcin Janicki & Małgorzata Napieralska, 2021. "Comparison of Properties for Selected Experimental Set-Ups Dedicated to Measuring Thermal Parameters of Power LEDs," Energies, MDPI, vol. 14(11), pages 1-14, June.
    2. Krzysztof Górecki & Przemysław Ptak & Sylwia Wnuczko, 2022. "The Embedded System to Control the Illuminance of an Office Workplace with LED Light Sources," Energies, MDPI, vol. 15(7), pages 1-20, March.

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