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Proceedings Paper

Estimating the junction temperature of AC LEDs
Author(s): Yi-wei Liu; Asiri Jayawardena; Terence R. Klein; Nadarajah Narendran
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Paper Abstract

Light-emitting diodes operating on alternating current are gaining popularity in the LED industry, especially for lighting applications. Because junction temperature is a good predictor of LED performance, the availability of a method to accurately estimate the junction temperature of AC LEDs would be very useful. This study investigated a method in which a low reference current having a pulse width of less than several milliseconds was applied and the corresponding voltage across the device was measured and correlated to the junction temperature. Laboratory experiment data showed that the proposed method is a promising candidate for estimating AC LED junction temperature.

Paper Details

Date Published: 18 August 2010
PDF: 6 pages
Proc. SPIE 7784, Tenth International Conference on Solid State Lighting, 778409 (18 August 2010); doi: 10.1117/12.863060
Show Author Affiliations
Yi-wei Liu, Rensselaer Polytechnic Institute (United States)
Asiri Jayawardena, Rensselaer Polytechnic Institute (United States)
Terence R. Klein, Rensselaer Polytechnic Institute (United States)
Nadarajah Narendran, Rensselaer Polytechnic Institute (United States)


Published in SPIE Proceedings Vol. 7784:
Tenth International Conference on Solid State Lighting
Ian Ferguson; Matthew H. Kane; Nadarajah Narendran; Tsunemasa Taguchi, Editor(s)

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