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Test Setup and Results
13
SLLU298 – May 2018
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ISO5852SDW Driving and Protecting SiC and IGBT Power Modules
Function generator settings are shown in
Table 3
.
Table 3. Function Generator Settings
CHANNEL
MODE
FREQ.
WIDTH
DELAY
AMPL.
OFFSET
LOAD
IMPED.
FREQUENC
Y SET
A (Ch.1)
Pulse
10 kHz
80 µs
0
4 Vpp
2.0 V
50
Ω
B (Ch.2)
Pulse
10 kHz
80 µs
50 µs
4 Vpp
2.0 V
50
Ω
Ch1 = Ch2,
ON
Oscilloscope settings are shown in
Table 4
.
Table 4. Oscilloscope Settings
CHANNEL
VERTICAL
SCALE
HORIZONTAL
SCALE
BANDWIDTH
COUPLING
TERMINATIO
N
SYNC
TRIGGER
RESOLUTION
Ch. 1(red)
10 V/div
50 µs/div
500 MHz or
above
DC
1 M
Ω
High
Ch. 2(blue)
3 V/div
Ch. 2
Ch. 3(pink)
3 V/div
Ch. 4(green)
10 V/div
1. Enable power supply PS1
2. Gradually increase the voltage at PS1 into 4.95 V to 5.05 V range and monitor current using MM1 that
should not exceed 150 mA
3. Enable channel A (ch.1) and channel B (ch.2) of function generator
4. Monitor current increase at MM1 but does not exceed 250 mA
5. Compare waveforms with typical screen shot showed in
Figure 6
6. Disable function generator channels
7. Gradually reduce voltage at PS1 down to 0 and disable it
(Make sure function generator outputs are
disabled before this action!)