The Lifetime Prediction of LED Drivers and Lamps

Bo Sun

Research output: ThesisDissertation (TU Delft)

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Light-Emitting Diodes (LEDs) have become a very promising alternative lighting source with the main advantages of a longer lifetime and a higher efficiency than traditional ones. However, the LED lamp’s lifetime is compromised by its driver’s reliability. Although extensive studies have been made on the reliability of LEDs, the research on the lifetime prediction for LED drivers, and the interaction of the reliability between LEDs and driver in an LED system is still lacking. This dissertation investigates the lifetime predictions for LED drivers and LED lamps using physics of failure (PoF) based reliability simulations. Various reliability and statistical methods, such as theMonte Carlo method, the fault-tree method, the Markov Chain method, and the Wiener process, are applied and integrated with the electronic-thermal simulation in order to investigate various problems.
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • Delft University of Technology
  • Zhang, G.Q., Supervisor
Award date26 Sep 2017
Publication statusPublished - 26 Sep 2017


  • LED Driver
  • LED Lamp
  • Reliability
  • Solid state lighting
  • Lifetime prediction
  • Electronic-thermal simulation

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