Title :
Junction Temperature Estimation for High Power Light-Emitting Diodes
Author :
Sa, Edilson Mineiro, Jr. ; Antunes, Fernando L M ; Perin, Arnaldo J.
Author_Institution :
Univ. Fed. de Santa Catarina, Florianopolis
Abstract :
The understanding of the thermal properties of a high power LEDs is essential in order to achieve the highest optical performance of the device without sacrificing its reliability. In addition to that, the good thermal management is also a key factor to avoid thermal induced variation of the photometric / colorimetric properties of power LEDs, such as variation of relative light output or the spectrum. This paper proposes a methodology to estimate junction temperature of high power LEDs. This method allows discarding the influence of the intrinsic series resistance of the LED electric model in 1-V curve, avoiding, as a consequence measurement errors.
Keywords :
light emitting diodes; power semiconductor diodes; LED; colorimetric properties; high power light-emitting diodes; junction temperature estimation; photometric properties; thermal induced variation; Electric resistance; Energy management; Light emitting diodes; Measurement errors; Optical devices; Optical variables control; Photometry; Temperature; Thermal factors; Thermal management;
Conference_Titel :
Industrial Electronics, 2007. ISIE 2007. IEEE International Symposium on
Conference_Location :
Vigo
Print_ISBN :
978-1-4244-0754-5
Electronic_ISBN :
978-1-4244-0755-2
DOI :
10.1109/ISIE.2007.4375098
