This video appeared in Electronic Design and has been published here with permission.
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The PD1550A from Keysight Technologies performs measurements of wide-bandgap semiconductor power modules, ensuring repeatable, reliable double-pulse test (DPT) results for the dynamic characterization of wide-bandgap (WBG) power modules.
Features include probe compensation, offset adjustment, de-skewing, and common-mode noise rejection, with an innovative measurement topology and layout. A semi-automated calibration routine, which corrects for system gain and offset errors, was specifically developed for this system, along with de-embedding techniques to compensate for inductive parasitics in the current shunt.
True Pulse Isolate Probe technology enables accurate high-side Vgs measurements, and solderless contact technology allows for measurements without soldering large contact pads.