The Mechanism of Field-Plate Induced the Breakdown Voltage Change of High Voltage LDMOS

Ching Kuei Shih*, Chih Cherng Liao, Karuna Nidhi, Kai Chuan Kan, Ke Horng Chen, Jian Hsing Lee

*Corresponding author for this work

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

3 Scopus citations

Abstract

The field-plate (FP) has been commonly used to increase the breakdown voltage for achieving the low on-resistance (Ron) high-voltage (HV) device. However, the mechanism of the FP induced the breakdown-voltage change of HV device is not fully understood. From the TCAD simulation, it finds that the electrical field of the reduced-surface field (RESURF) region of HV device is affected by the thickness differences of the dielectrics above this region. As the field-plate is inserted into these dielectrics, the dielectric thickness differences are reduced to lead to the electrical field suppression of RESURF region, resulting in the breakdown voltage increase of HV device.

Original languageEnglish
Title of host publication2021 International Semiconductor Conference, CAS 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages89-92
Number of pages4
ISBN (Electronic)9781665435710
DOIs
StatePublished - 2021
Event44th International Semiconductor Conference, CAS 2021 - Virtual, Online, Romania
Duration: 6 Oct 20218 Oct 2021

Publication series

NameProceedings of the International Semiconductor Conference, CAS
Volume2021-October

Conference

Conference44th International Semiconductor Conference, CAS 2021
Country/TerritoryRomania
CityVirtual, Online
Period6/10/218/10/21

Keywords

  • dielectrics
  • electric field
  • field-plate
  • potential
  • reduced-surface field (RESURF)

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