PCIM 2024 - Best Paper Award

Characterization of Power-Module Parasitics: Sub-Nanosecond Large Signal Pulsing vs. Double-Pulse Testing

This paper compares the novel sensor gap transmission line pulsing (sgTLP) technique with the established method of double-pulse testing (DPT) for characterizing parasitic inductances in a fast SiC half-bridge power module.

SgTLP employs Transmission Line Pulsing with its sub-nanosecond temporal resolution and voltages up to 2 kV to detect parasitic inductances and capacitive effects, which are not typically observable with DPT. While both, sgTLP and established methods, produce corresponding results for the total inductances, sgTLP additionally offers a deeper insight into the structure of the module’s internal inductive and even capacitive network.

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