Teledyne-lecroy Power Analyzer Package Uživatelský manuál stáhnout pdf (Strana 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.

921326 Rev B

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Teledyne-lecroy Power Analyzer Package Uživatelský manuál Strana 20