National Instruments ISO5851, Руководство пользователя

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Example Measurements
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Figure 5 shows the input and output of the ISO5851 EVM for a 100-kHz clock with R
G
= 10 Ω (R3) and
R12 = 10 Ω and a bipolar output supply (V
CC2
= 15-V, V
EE2
= –8-V).
Figure 5. ISO5851 EVM Input and Output With Bipolar Output Supply (V
CC2
= 15-V, V
EE2
= –8-V)
Figure 6 with Unipolar Output Supply and Figure 7 with Bipolar Output Supply, shows the functionality of
the DESAT, FLT, and RST pins. IN+ is set to 5-V
DC
, and an 10-µs pulse is applied to RST. On the rising
edge of RST, the fault is cleared and the DESAT capacitor begins to charge. As the DESAT pin reaches
the DESAT threshold voltage, a fault is triggered on FLT, and the output goes into active turn-off. RST
must be toggled low, then high to reset the device, and the cycle begins again.
Figure 6. ISO5851 EVM DESAT and Reset with Unipolar Output Supply
6 ISO5851 Evaluation Module SLLU218 – June 2015
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