A high-performance isolated SEPIC converter for non-electrolytic LED lighting

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

Research output: Journal PublicationArticlepeer-review

2 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)149894-149905
Number of pages12
JournalIEEE Access
Publication statusPublished - 2021


  • High efficiency
  • Isolated SEPIC
  • LED driver
  • Non-dissipative snubber
  • Non-electrolytic capacitor

ASJC Scopus subject areas

  • Computer Science (all)
  • Materials Science (all)
  • Engineering (all)


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