The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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A New LED Current Balancing Scheme Using Double-Step-Down DC-DC Converter

이중강압 DC-DC 컨버터를 이용한 새로운 LED 전류 밸런싱 기법

  • Kim, Kisu (School of Energy Engineering, Kyungpook National University) ;
  • Do, Duc Tuan (School of Energy Engineering, Kyungpook National University) ;
  • Kim, Heung-Geun (School of Energy Engineering, Kyungpook National University) ;
  • Cha, Honnyong (School of Energy Engineering, Kyungpook National University)
  • Received : 2017.08.03
  • Accepted : 2017.09.22
  • Published : 2017.10.01
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Abstract

This paper presents a new LED current balancing scheme using double-step-down dc-dc converter. With the proposed structure, the two channel LED currents are automatically balanced without using any dedicated control or auxiliary circuit. In addition, switching loss of the switching devices in the proposed LED driver is lower than that of the conventional buck LED driver. To verify the operation of the proposed LED driver, a hardware prototype is built and tested with different number of LED.

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References

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