The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
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LED PSU using an Integrated Transformer of New Shape

새로운 형상의 통합변압기적용 LED PSU

  • Joo, Jong-Seong (Electrical & Electronics Engineering, Jeonju University) ;
  • Lee, Young-Soo (LG Innotek Components R&D Center) ;
  • Heo, Ye-Chang (Electrical & Electronics Engineering, Jeonju University) ;
  • Kim, Eun-Soo (Electrical & Electronics Engineering, Jeonju University) ;
  • Hwang, In-Gab (Electrical & Electronics Engineering, Jeonju University)
  • Received : 2015.10.07
  • Accepted : 2016.11.24
  • Published : 2017.02.20
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Abstract

In this study, an integrated 2-in-1 transformer for a low-weight and low-cost light-emitting diode lighting power supply is proposed. In the transformer, a power factor correction (PFC) inductor and an LLC resonant transformer are placed and integrated on a single magnetic core. The amount of mutual interference, represented by the coupling coefficient, between magnetic fluxes generated from each magnetic source is minimized by using the new shape core of an integrated 2-in-1 transformer. The design consideration on critical conduction mode PFC converter and LLC resonant converter using the proposed 2-in-1 integrated transformer is described, and the overall performance of the 150 W LED PSU shown through the experiment.

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References

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