Teledyne LeCroy Power Analyzer Package - Manual (Page 20)

Power Analysis Software
Device dv/dt Test
This test measures the speed of a power device’s rate of change (dv/dt) during turn-on and turn-off.
1. Select the source channels and identify the switching zone .
2. On the Power Analysis tab choose Analysis Type Device and Test dv/dt & di/dt.
3. Select di/dt by checking the di/dt box in the Waveform section.
The power device’s drain-to-source voltage (VDS) signal and the drain current are displayed on the
first grid. The derivative of the waveform’s dv/dt is displayed on the second grid. The di/dt waveform
is shown in the third grid.
4. Optionally, enter an Enhance Bit Value in the Setup section. This applies a filter to the data to reduce
noise.
5. Optionally, select Statistics to display mean, minimum and maximum values on the measurements
table. This helps to observe a consistent number.
6. Optionally, select Histicons to display a miniature histogram of the statistical measurements.
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