Deskew Waveforms - Wolfspeed SpeedVal MOD-MB-3P-0900V-40A Series User Manual

7.2.3 Deskew Waveforms

The current shunt monitoring connector is installed on the power daughter card with the polarity reversed.
This is so the V , V , and I
DS GS
normal operation, the oscilloscope will need to invert I
During deskew, I should be inverted so that I
DS
(deskewed). The scale and offsets of V
each other as shown in Figure 29. Once the scales and offsets are properly adjusted, the oscilloscope's zoom
function should be utilized so that small timing differences can be seen as shown in Figure 30.
PRD-08611 REV. 1, June 2024
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commons will all be tied to the same node (source of lower MOSFET). During
DS
DS
and I are adjusted so that the waveforms appear to lie on top of
DS DS
Figure 29: V
MOD-MB-3P-0900V-40A SpeedVal™ Kit Three-Phase Motherboard User Guide
so that it is displayed properly.
DS
is in phase with V and the timings can be aligned
DS
and I Waveforms
DS DS
41