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A 1.2 kV 400A SiC-MOSFET based 3L-TNPC power module with improved hybrid packaging method for high-density applications

  • Zhao Yuan
  • , Asif Imran Emon
  • , Si Huang
  • , Zhongjing Wang
  • , Yalin Wang
  • , Mustafeez Hassan
  • , Balaji Narayanasamy
  • , Amol Deshpande
  • , Fang Luo
  • University of Arkansas, Fayetteville
  • Stony Brook University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

Abstract

Three-level T-type neutral-point-clamped converters (3L-TNPC) are widely used in motor drive and PV applications because of the higher efficiency, improved output THD, and lower common-mode noise. But such topology suffers from high stray inductance because of the complicated power loop structure. This paper proposes a SiC-MOSFET based 3L-TNPC power module with a hybrid packaging method. The module has a printed circuit board (PCB) directly soldered on top of direct bounding copper (DBC), with bare dies soldered on DBC and connecting to PCB by bonding wires. Such a structure allows the power loop on both DBC and PCB. This reduces stray inductance through enhanced mutual-inductance cancellation. The introduced PCB can provide extra flexibility in gate-loop optimization, enabling synchronous gate drive between parallel dies. The heat from dies can also be directly dissipated through DBC and the proposed direct-soldered coldplate. A 1.2 kV, 400 A SiC 3L-TNPC module is fabricated with measured loop inductance of 2.5 nH. Faster driving speed by using 0.33Ω gate resistance is enabled to reduce switching loss. Eventually, double-pulse tests and continuous tests are carried out to evaluate the module.

Original languageEnglish
Title of host publication2021 IEEE Applied Power Electronics Conference and Exposition, APEC 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages27-32
Number of pages6
ISBN (Electronic)9781728189499
DOIs
StatePublished - Jun 14 2021
Event36th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2021 - Virtual, Online, United States
Duration: Jun 14 2021Jun 17 2021

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

Conference

Conference36th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2021
Country/TerritoryUnited States
CityVirtual, Online
Period06/14/2106/17/21

Keywords

  • Hybrid packaging
  • PCB
  • Power density
  • Power module
  • SiC MOSFET
  • Stray inductance
  • Three-level

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