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Design of Packaging Structure in High Voltage Power Modules to Avoid Surface Breakdown

  • Feifei Yan
  • , Laili Wang
  • , Tao Yang
  • , Binyu Wang
  • , Fengtao Yang
  • , Longyang Yu
  • Xi'an Jiaotong University

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

9 Scopus citations

Abstract

In high voltage power modules, the triple point lies between metallization, ceramic and silicone gel. Electric stress is much higher at triple point than average electric field. The situation gets worse when the triple point lies in the electrode spacing. Short distance between electrodes can enhance the electric stress and increase the damage from repeated PDs. This paper proves that interface between ceramic and silicone gel is a weak insulation area. Repeated partial discharges (PD) can induce surface breakdown along the interface area. Consequently, triple point combines high electric stress and weak insulation together. In order to separate the interface area from the edge of metallization, this paper proposes a new geometry of the ceramic substrate.

Original languageEnglish
Title of host publication2020 IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728159553
DOIs
StatePublished - 23 Sep 2020
Event2020 IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2020 - Suita, Japan
Duration: 23 Sep 202025 Sep 2020

Publication series

Name2020 IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2020

Conference

Conference2020 IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2020
Country/TerritoryJapan
CitySuita
Period23/09/2025/09/20

Keywords

  • high voltage power module
  • insulation
  • new geometry
  • surface breakdown

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