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Fixed-Peak-Current Frequency Modulation Scheme for High Efficiency Buck Converter
  • +4
  • Yun-Gi Kwak,
  • Dae-Ho Heo,
  • Seung-Won Lee,
  • Eun-Seo Lee,
  • Changseok Kim,
  • Jung-Kyu Han,
  • Byoung-Hee Lee
Yun-Gi Kwak
LG magna
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Dae-Ho Heo
Hanbat National University
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Seung-Won Lee
Hanbat National University
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Eun-Seo Lee
Hanbat National University
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Changseok Kim
Hanbat National University
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Jung-Kyu Han
Hanbat National University
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Byoung-Hee Lee
Hanbat National University

Corresponding Author:[email protected]

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Abstract

For the power systems in electric vehicle, a weight and efficiency are very important since it is directly related with driving range. Many previous researches proposed new systems to reduce a weight or to increase efficiency. However, although they improved the weight or efficiency, they usually degrade the other side. Therefore, this paper proposes a new power system which achieves high efficiency while don't degrade the weight of the power system by adopting frequency modulation control. The proposed idea is implemented for 48V-to-12V DC-DC converter of mild hybrid electric vehicle using buck converter.