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Packaging of 20 kV Double-Side Cooled Silicon Carbide Diode Module With Electrical Insulation Enhanced by a Polymer-Nanoparticle Coating

  • Zichen Zhang
  • , Carl Nicholas
  • , Arriola Emmanuel
  • , Khai D.T. Ngo
  • , Guo Quan Lu
  • , Justin Lynch
  • , Nick Yun
  • , Adam Morgan
  • , Woongje Sung
  • Virginia Polytechnic Institute and State University
  • SUNY Polytechnic Institute

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

2 Scopus citations

Abstract

To address the insulation challenges in packaging medium-voltage silicon carbide power devices, a package design for a 20-kV silicon carbide diode was developed. This design uses a nonlinear resistive polymer-nanoparticle composite to enhance insulation without sacrificing thermal performance. The "sandwich"structure, involving diodes connected between direct-bonded copper substrates, reduces parasitic inductance (<4.5 nH) in a wirebond-less design. This configuration results in a 41% decrease in junction-to-case thermal resistance, according to thermal simulations. Coating electrode triple points with the resistive composite reduces electric field stress. Experimental tests revealed a 96% increase in the partial discharge inception voltage of substrates from 15.6 kV to 30.6 kV. Scaled-down packages with 15 kV silicon carbide diodes was fabricated and tested for validation.

Original languageEnglish
Title of host publication2023 25th European Conference on Power Electronics and Applications, EPE 2023 ECCE Europe
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9789075815412
DOIs
StatePublished - 2023
Event25th European Conference on Power Electronics and Applications, EPE 2023 ECCE Europe - Aalborg, Denmark
Duration: Sep 4 2023Sep 8 2023

Publication series

Name2023 25th European Conference on Power Electronics and Applications, EPE 2023 ECCE Europe

Conference

Conference25th European Conference on Power Electronics and Applications, EPE 2023 ECCE Europe
Country/TerritoryDenmark
CityAalborg
Period09/4/2309/8/23

Keywords

  • «Medium voltage»
  • «Packaging»
  • «Partial discharge»
  • «Silicon Carbide»
  • «Thermal management»

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