A New Data Fitting Method for Parasitic Impedances of Power Transistor Packages using Two-Port S-Parameter Measurements

Thomas Moldaschl, Stefan Woetzel, Maurizio Galvano, Christoph Mayer, Herbert Hackl, Alfred Binder

Research output: Conference proceeding/Chapter in Book/Report/Conference Paperpeer-review

Abstract

The parasitic inductances, resistances and capacitances of power transistor packages play a vital role in power transistor applications. They lead to increased switching losses and longer switching transients, which is why it is pivotal to accurately assess these values. We present a new way of fitting these values from two-port S-parameter measurements. The result is a fully automated method with low computational effort and good accuracy. In this study 2 different packages have been investigated which were supplied by Infineon. The transistors were mounted on a specially designed PCB and measured with a network analyzer. The corresponding S-parameter files were then fed into a Matlab script which computed the reconstruction method. Furthermore, the effort and accuracy of this estimation are compared to other methods found in literature.
Original languageEnglish
Title of host publicationIEEE Annual Southern Power Electronics Conference (SPEC)
DOIs
Publication statusPublished - 10 Mar 2023

Keywords

  • Power electronics
  • S-Parameters
  • Data Analytics

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