Achieving accurate electro-optical-thermal measurements of high-power LEDs

T. K. Law, Fannon Lim, Y. Li, J. W. Ronnie Teo, Z. M. Tai

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

1 Citation (Scopus)

Abstract

High-power Light Emitting Diode (LED) generates significant amount of heat fluxes that can affect the temperature-dependent properties of the device. This self-heating effect can upset the measurement setup and produce inaccurate readings, leading to misinterpretation of results such as electrical and thermal resistances. Optical, electrical and thermal performances of high-power LED packages were analysed under different temperature feedback controls. The results of these experiments demonstrate the importance of the temperature control module in the measurement setup affecting the device's properties such as the series resistance Rs and the thermal resistance Rth. In the electrical current-voltage measurements, the temperature control module cannot control the self-heating effect effectively, resulting in a lower Rs compared to when the measurements are made manually. In transient thermal measurements, it was found that lower Rth values are obtained when the controller operates in closed-loop adaptive temperature control compared to when it operates in open-loop adaptive temperature control. This paper recommends the manual electrical and open-loop thermal measurement methods for accurate parametric LED analyses.

LanguageEnglish
Title of host publication2015 IEEE 17th Electronics Packaging and Technology Conference, EPTC 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages7
Volume2016-February
ISBN (Electronic)9781467372688
DOIs
Publication statusPublished - 17 Feb 2016
Event17th IEEE Electronics Packaging and Technology Conference, EPTC 2015 - Singapore, Singapore
Duration: 2 Dec 20154 Dec 2015

Conference

Conference17th IEEE Electronics Packaging and Technology Conference, EPTC 2015
CountrySingapore
CitySingapore
Period2/12/154/12/15

Fingerprint

Temperature control
Light emitting diodes
temperature control
light emitting diodes
thermal resistance
parametric diodes
Heat resistance
modules
Heating
heating
Acoustic impedance
Voltage measurement
Electric current measurement
electrical resistance
feedback control
electrical measurement
Feedback control
Heat flux
heat flux
controllers

Keywords

  • lighting technology
  • energy consumption
  • LED
  • energy conservation
  • carbon emissions

Cite this

Law, T. K., Lim, F., Li, Y., Ronnie Teo, J. W., & Tai, Z. M. (2016). Achieving accurate electro-optical-thermal measurements of high-power LEDs. In 2015 IEEE 17th Electronics Packaging and Technology Conference, EPTC 2015 (Vol. 2016-February). [7412321] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/EPTC.2015.7412321
Law, T. K. ; Lim, Fannon ; Li, Y. ; Ronnie Teo, J. W. ; Tai, Z. M. / Achieving accurate electro-optical-thermal measurements of high-power LEDs. 2015 IEEE 17th Electronics Packaging and Technology Conference, EPTC 2015. Vol. 2016-February Institute of Electrical and Electronics Engineers Inc., 2016.
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Law, TK, Lim, F, Li, Y, Ronnie Teo, JW & Tai, ZM 2016, Achieving accurate electro-optical-thermal measurements of high-power LEDs. in 2015 IEEE 17th Electronics Packaging and Technology Conference, EPTC 2015. vol. 2016-February, 7412321, Institute of Electrical and Electronics Engineers Inc., 17th IEEE Electronics Packaging and Technology Conference, EPTC 2015, Singapore, Singapore, 2/12/15. https://doi.org/10.1109/EPTC.2015.7412321

Achieving accurate electro-optical-thermal measurements of high-power LEDs. / Law, T. K.; Lim, Fannon; Li, Y.; Ronnie Teo, J. W.; Tai, Z. M.

2015 IEEE 17th Electronics Packaging and Technology Conference, EPTC 2015. Vol. 2016-February Institute of Electrical and Electronics Engineers Inc., 2016. 7412321.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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Law TK, Lim F, Li Y, Ronnie Teo JW, Tai ZM. Achieving accurate electro-optical-thermal measurements of high-power LEDs. In 2015 IEEE 17th Electronics Packaging and Technology Conference, EPTC 2015. Vol. 2016-February. Institute of Electrical and Electronics Engineers Inc. 2016. 7412321 https://doi.org/10.1109/EPTC.2015.7412321