A study on power light-emitting diode (LED) junction temperature sensing based on the measurements of its forward voltage is presented. The linear dependence on temperature of the voltage drop across a power LED in the wide temperature range from T = 35 up to 175°C, for different bias currents, is investigated. The experimental measurements., repeated on three devices with the same parts number, exhibit a good degree of linearity. Moreover, the proposed sensors have excellent performances at the bias current of 1.4 RNA with good repeatability and maintaining a stable output over more cycles of measurements.

A Direct Junction Temperature Measurement Technique for Power LEDs / Pangallo, Giovanni; Carotenuto, Riccardo; Iero, Demetrio; Mallemace, Elisa; Merenda, Massimo; Rao, Sandro; DELLA CORTE, Francesco Giuseppe. - (2018). (Intervento presentato al convegno 9th IEEE International Workshop on Applied Measurements for Power Systems, AMPS 2018; tenutosi a Bologna nel 2018) [10.1109/AMPS.2018.8494841].

A Direct Junction Temperature Measurement Technique for Power LEDs

Francesco Della Corte
2018

Abstract

A study on power light-emitting diode (LED) junction temperature sensing based on the measurements of its forward voltage is presented. The linear dependence on temperature of the voltage drop across a power LED in the wide temperature range from T = 35 up to 175°C, for different bias currents, is investigated. The experimental measurements., repeated on three devices with the same parts number, exhibit a good degree of linearity. Moreover, the proposed sensors have excellent performances at the bias current of 1.4 RNA with good repeatability and maintaining a stable output over more cycles of measurements.
2018
978-153865375-3
A Direct Junction Temperature Measurement Technique for Power LEDs / Pangallo, Giovanni; Carotenuto, Riccardo; Iero, Demetrio; Mallemace, Elisa; Merenda, Massimo; Rao, Sandro; DELLA CORTE, Francesco Giuseppe. - (2018). (Intervento presentato al convegno 9th IEEE International Workshop on Applied Measurements for Power Systems, AMPS 2018; tenutosi a Bologna nel 2018) [10.1109/AMPS.2018.8494841].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/849595
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