JSTS:Journal of Semiconductor Technology and Science

The Institute of Electronics and Information Engineers (대한전자공학회)
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Design of a Two-Stage Driver for LED MR16 Retrofit Lamps Compatible with Electronic Transformers

  • Yim, Sungwon (Department of Electrical and Computer Engineering, Seoul National University) ;
  • Lee, Hyongmin (Department of Electrical and Computer Engineering, Seoul National University) ;
  • Lee, Bongjin (Engine Business Team, LED Business Division, Samsung Electronics Co., Ltd.) ;
  • Kang, Kyucheol (Engine Business Team, LED Business Division, Samsung Electronics Co., Ltd.) ;
  • Kim, Suhwan (Department of Electrical and Computer Engineering, Seoul National University)
  • Received : 2015.02.21
  • Accepted : 2015.10.26
  • Published : 2016.02.28
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Abstract

Drivers for LED MR16 retrofit lamps need to be compatible with the dimmers and electronic transformers which originally operated with the halogen lamps to be replaced. We present a two-stage MR16 LED driver consisting of a boost converter in the first stage and a buck converter in the second stage. Our design has been analyzed in the frequency domain using simulations to demonstrate that it effectively suppresses the high-frequency components of the AC output of the electronic transformer. Experiment results with a driver prototype verify the simulation results as well as dimmability.

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References

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