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A soft-switching inverting high step-down converter with a pair of coupled inductors and self-driven synchronous rectifier

Journal Article


Abstract


  • In this paper, a non-isolated coupled-inductor high step-down converter with extended duty cycle is proposed, which operates under discontinuous conduction mode. The soft-switching condition is provided for all the switches and diodes, which results in the reduction of the switching losses, and the losses related to diode reverse recovery problem. Also, a self-drive circuit is used to automatically generate the ON and OFF gate signals of the synchronous rectifier, which recovers the gate energy and reduces the complexity. In this topology, only a single coupled inductor is proposed which decreases the size and cost of the proposed converter. A 200 W laboratory prototype is implemented, and its results confirm the validity of theoretical analysis and advantages of the proposed converter over previous structures.

Publication Date


  • 2021

Citation


  • Hosseinabadi, F., Soleymani, B., Adib, E., Islam, M. R., Farzanehfard, H., Kouzani, A. Z., & Mahmud, M. A. P. (2021). A soft-switching inverting high step-down converter with a pair of coupled inductors and self-driven synchronous rectifier. IET Power Electronics, 14(15), 2441-2451. doi:10.1049/pel2.12191

Scopus Eid


  • 2-s2.0-85115231545

Web Of Science Accession Number


Start Page


  • 2441

End Page


  • 2451

Volume


  • 14

Issue


  • 15

Abstract


  • In this paper, a non-isolated coupled-inductor high step-down converter with extended duty cycle is proposed, which operates under discontinuous conduction mode. The soft-switching condition is provided for all the switches and diodes, which results in the reduction of the switching losses, and the losses related to diode reverse recovery problem. Also, a self-drive circuit is used to automatically generate the ON and OFF gate signals of the synchronous rectifier, which recovers the gate energy and reduces the complexity. In this topology, only a single coupled inductor is proposed which decreases the size and cost of the proposed converter. A 200 W laboratory prototype is implemented, and its results confirm the validity of theoretical analysis and advantages of the proposed converter over previous structures.

Publication Date


  • 2021

Citation


  • Hosseinabadi, F., Soleymani, B., Adib, E., Islam, M. R., Farzanehfard, H., Kouzani, A. Z., & Mahmud, M. A. P. (2021). A soft-switching inverting high step-down converter with a pair of coupled inductors and self-driven synchronous rectifier. IET Power Electronics, 14(15), 2441-2451. doi:10.1049/pel2.12191

Scopus Eid


  • 2-s2.0-85115231545

Web Of Science Accession Number


Start Page


  • 2441

End Page


  • 2451

Volume


  • 14

Issue


  • 15