Reliability Issues of Mid-Power LEDs

Janos Hegedus, Gusztav Hantos, Andras Poppe

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

Abstract

The presence of mid- and high-power LEDs in lighting applications is ordinary and widespread. Appropriate life testing and modelling techniques have a great potential in further optimizing both the efficiency and reliability of LED based light sources. A combined electrical, thermal and optical simulation in a Spice-like environment allows fast and accurate system level modelling of even a whole LED based luminaire, provided that the compact models of necessary circuit elements are already available. The work described in this paper aims to make a step forward in LED multi-domain modelling and incorporate elapsed lifetime dependence into an existing LED model. For this purpose, a set of blue mid-power LEDs of a well-recognised vendor were exposed to a cyclic moisture resistance test and an LM-80-08 based life test combined with the latest LED modelling techniques.

Original languageEnglish
Title of host publicationTHERMINIC 2019 - 2019 25th International Workshop Thermal Investigations of ICs and Systems
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728120782
DOIs
Publication statusPublished - Sep 2019
Event25th International Workshop on Thermal Investigations of ICs and Systems, THERMINIC 2019 - Lecco, Italy
Duration: Sep 25 2019Sep 27 2019

Publication series

NameTHERMINIC 2019 - 2019 25th International Workshop Thermal Investigations of ICs and Systems

Conference

Conference25th International Workshop on Thermal Investigations of ICs and Systems, THERMINIC 2019
CountryItaly
CityLecco
Period9/25/199/27/19

    Fingerprint

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Safety, Risk, Reliability and Quality
  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Hegedus, J., Hantos, G., & Poppe, A. (2019). Reliability Issues of Mid-Power LEDs. In THERMINIC 2019 - 2019 25th International Workshop Thermal Investigations of ICs and Systems [8923802] (THERMINIC 2019 - 2019 25th International Workshop Thermal Investigations of ICs and Systems). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/THERMINIC.2019.8923802