Linear PFC regulator for LED lighting with the multilevel current bypass circuit

Yuichi Noge, Jun Ichi Itoh

研究成果: ジャーナルへの寄稿学術誌査読

5 被引用数 (Scopus)

抄録

This paper proposes a linear PFC regulator for LED lighting applications. The proposed circuit is small in size because the circuit structure consists of only semiconductors, ICs, and small resistors without any reactors and electrolytic capacitors. The current bypass circuit which is connected in parallel to the LED string consists of one MOSFET, two Zener diodes, and one resistor. The MOSFET is operated in an active state by a self-bias circuit. Thus, an external controller and high voltage gate drivers are not required. The proposed circuit is experimentally validated using 7.8W 5-string and 15W 10-string prototypes. From the experimental results with the 10-string prototype, the total harmonic distortion of the input current is 5.1%, and the power factor is 0.999. In addition, the power loss is analyzed at an efficiency of 91.6% for the prototype circuit.

本文言語英語
ページ(範囲)554-563
ページ数10
ジャーナルIEEJ Transactions on Industry Applications
134
5
DOI
出版ステータス出版済み - 2014
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 産業および生産工学
  • 電子工学および電気工学

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