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2014•Unpublished venueRequires access

Power LEDs operating temperature measurement using the protection reverse diode

Marian Vlădescu, Bogdan Mihăilescu

Open publisher page 11 citations

Abstract

Determination of the junction temperature of power LEDs is a great challenge. Indirect calculation of the junction temperature can be done by calculations, starting from the temperatures that could be measured with thermocouples in the accessible points and taking into consideration the thermal resistances of the materials included in the LED structure and in the mounting PCB used as heatsink. In this paper the authors proposed to use as temperature sensor the protection diode embedded in most of the power LED structures.

About this research paper

What this paper is about

Determination of the junction temperature of power LEDs is a great challenge. Indirect calculation of the junction temperature can be done by calculations, starting from the temperatures that could be measured with thermocouples in the accessible points and taking into consideration the thermal resistances of the materials included in the LED structure and in the mounting PCB used as heatsink. In this paper the authors proposed to use as temperature sensor the protection diode embedded in most of the power LED structures.

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OpenAlex reports 11 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

Determination of the junction temperature of power LEDs is a great challenge. Indirect calculation of the junction temperature can be done by calculations, starting from the temperatures that could be measured with thermocouples in the accessible points and taking into consideration the thermal resistances of the materials included in the LED structure and in the mounting PCB used as heatsink. In this paper the authors proposed to use as temperature sensor the protection diode embedded in most of the power LED structures.

Key concepts: Junction temperature, Thermal management of high-power LEDs, Thermocouple, Light-emitting diode, Heat sink, Temperature measurement, Thermal resistance, Diode

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