The oscilloscope settings are to be chosen such that the individual measurements can
be read properly. Overshoots as exemplified in
are not relevant when
ascertaining the stray inductance and hence donot need tobe shown on the screen.
Determination by measurement of the total stray inductance L
of a module
with a diode turn-off test set-up.
The stray inductance of the total set-up can be ascertained using a half-bridge set-up
too. With the IGBT turn-on test
) the total stray
inductance according t
can be determined. Alternatively it can be ascertained
with an IGBT turn-off test according t
Determinationbymeasurement of the total stray inductance L
of a set-upwith
an IGBT turn-onand turn-off test.
More on the subject of stray inductance and its influence on the switching behaviour in
the application canbe found in chapte