Technology, Process and Cost Comparison

Automotive Power Module Comparison 2022

By Yole SystemPlus

Technology and cost comparison of seven automotive power modules from: Hitachi, StarPower, Vitesco Technologies, STMicroelectronics, DENSO, and Wolfspeed.


  • Module technology and design trends (interconnections, die attach, DBC/AMB/plate, baseplate…)
  • Optical photos of module opening and cross-section
  • SEM cross-sections for some modules
  • Assembly process flow
  • Supply chain evaluation
  • Module cost analysis (die cost is not detailed)


  • Part of the analyzed power modules are from torn-down inverters of five xEVs.
  • Exhaustive comparisons of power module technology choices.
  • Three silicon carbide-based power modules are analyzed.

Available on our Yole Group All-Inclusive Automotive Package

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