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DSP56F801EVM Hardware User’s Manual
2.12.1 UNI-3 Motor Protection Logic
The UNI-3 DC Bus Over-Voltage or the UNI-3 DC Bus Over-Current signal can be
connected to the DSP’s PWM fault input, FAULT0. Jumper JG3 provides the selection;
reference
and
Figure 2-10. FAULT0 Selection Circuit
Table 2-6. FAULT0 Source Selection Jumper
JG3
Comment
1–2
DC Bus Over-Voltage Sense input
2–3
DC Bus Over-Current Sense input
DC BUS VOLTAGE SENSE
V_S_DCB
+
–
+5.0V
+5.0V
LM393
+3.3V
JG3
1
2
3
FAULT0
+
–
+5.0V
+5.0V
+3.3V
I_S_DCB
DC BUS CURRENT SENSE
LM393
UNI-3 Over-Voltage Fault Detection
UNI-3 Over-Current Fault Detection
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