5-8 Keysight B1505A User’s Guide, Edition 12
Measurement Examples
Gate Charge Measurement
You can also observe the switching waveforms as shown below.
1. Click the Results button at the lower position of the main screen to show the
pull-down menu, and then select Filter > Expand Application Test Results to
activate this function.
2. Select a measurement result of the Qg (High Id Switching) or Qg (High Vds
Switching) in the list of the Results. And then, right-click it to open the pop-up
menu, and select the Display Data. The switching waveforms are displayed in
the Data Display window.
Adjusting the Measurement Condition
The charging interval on the gate charge characteristics increases in proportion to
the switching speed. If the charge interval is too long, decrease the gate current Ig.
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