Thermal impedance of AC LEDs

András Poppe, Gábor Farkas, Tamás Temesvölgyi, Balázs Katona, Gábor Molnár

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

2 Citations (Scopus)

Abstract

This paper aims at providing a rigorous description of the thermal impedance of AC LEDs, especially of retrofit LED lamps which are directly driven from the mains supply. The paper gives an overview of the different representations of the thermal impedance then provides estimates of the AC power of LEDs for two extreme cases (voltage and current driven situations). The high harmonic content of the AC power is calculated for these cases and real measurement results are presented for a practical situation. Suggested setup for actual measurement of the AC thermal impedance and the junction temperature of LEDs under AC conditions is aln.

Original languageEnglish
Title of host publication16th International Workshop on Thermal Investigations of ICs and Systems, THERMINIC 2010
Pages127-132
Number of pages6
Publication statusPublished - Dec 28 2010
Event16th International Workshop on Thermal Investigations of ICs and Systems, THERMINIC 2010 - Barcelona, Spain
Duration: Oct 6 2010Oct 8 2010

Publication series

Name16th International Workshop on Thermal Investigations of ICs and Systems, THERMINIC 2010

Other

Other16th International Workshop on Thermal Investigations of ICs and Systems, THERMINIC 2010
CountrySpain
CityBarcelona
Period10/6/1010/8/10

ASJC Scopus subject areas

  • Hardware and Architecture
  • Electrical and Electronic Engineering

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  • Cite this

    Poppe, A., Farkas, G., Temesvölgyi, T., Katona, B., & Molnár, G. (2010). Thermal impedance of AC LEDs. In 16th International Workshop on Thermal Investigations of ICs and Systems, THERMINIC 2010 (pp. 127-132). [5636326] (16th International Workshop on Thermal Investigations of ICs and Systems, THERMINIC 2010).