IEEE Access (Jan 2021)

A High-Performance Isolated SEPIC Converter for Non-Electrolytic LED Lighting

  • Sulaiha Ahmad,
  • Nadia Mei Lin Tan,
  • M. Zafri Baharuddin,
  • Giampaolo Buticchi

DOI
https://doi.org/10.1109/ACCESS.2021.3125522
Journal volume & issue
Vol. 9
pp. 149894 – 149905

Abstract

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This paper proposes a high-performance isolated single-ended primary inductor converter (SEPIC) that is integrated with a non-dissipative snubber for a light-emitting diode (LED) driver. The proposed LED driver employs the snubber circuit to minimize any switching overvoltage caused by parasitic leakage inductance of the high-frequency transformer in the isolated SEPIC converter. This paper also presents a detail theoretical analysis of the proposed LED driver including its operating modes and design calculation. The experimental results of the proposed LED driver at the rated power of 18 W shows that it has a high-power factor, low harmonics, employs non-electrolytic capacitors, low switching stress, high reliability and high efficiency.

Keywords