Quadrilateral Current Mode Paralleling of Power MOSFETs for Zero-Voltage Switching

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Yanfeng Shen
  • Yunlei Jiang
  • Hui Zhao
  • Luke Shillaber
  • Teng Long

Detail(s)

Original languageEnglish
Article number9216147
Pages (from-to)5997-6014
Journal / PublicationIEEE Transactions on Power Electronics
Volume36
Issue number5
Online published7 Oct 2020
Publication statusPublished - May 2021
Externally publishedYes

Abstract

This article proposes a generic zero-voltage switching (ZVS) scheme for parallel power MOSFETs. Uncoupled or inversely coupled differential-mode commutation inductors are added to the midpoints (ac terminals) of parallel MOSFET half-bridges, and a time-delay-based control scheme is applied, generating a circulating current flowing through these commutation inductors. Thus, the inductor currents are reshaped as quadrilaterals, which enable all the parallel transistors to achieve ZVS. The mode of operation of the proposed paralleling technique is entitled quadrilateral current mode (QCM) due to the quadrilateral-shaped commutation inductor currents. The operating principle of the QCM-paralleling technique is detailed mathematically, yielding accurate closed-form analytical expressions for modulation parameters. Finally, simulations and experimental results of a QCM-enabled synchronous buck dc-dc converter are presented to validate the theoretical considerations.

Research Area(s)

  • Parallel power MOSFETs, quadrilateral current mode (QCM), zero-voltage switching (ZVS)

Citation Format(s)

Quadrilateral Current Mode Paralleling of Power MOSFETs for Zero-Voltage Switching. / Shen, Yanfeng; Jiang, Yunlei; Zhao, Hui et al.
In: IEEE Transactions on Power Electronics, Vol. 36, No. 5, 9216147, 05.2021, p. 5997-6014.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review