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HCPL3140 Datasheet, PDF (13/16 Pages) Agilent(Hewlett-Packard) – 0.4 Amp Output Current IGBT Gate Drive Optocoupler | |||
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1
8
CLEDP
2
7
3
6
CLEDN
4
5
Figure 21. Optocoupler Input to Output Capacitance Model
for Unshielded Optocouplers.
1
CLEDO1
8
CLEDP
2
7
CLEDO2
3
6
CLEDN
4
5
SHIELD
Figure 22. Optocoupler Input to Output Capacitance Model
for Shielded Optocouplers.
+5 V
+
VSAT
â
1
CLEDP
2
ILEDP
3
CLEDN
4
SHIELD
8
0.1
7
µF
+
â
VCC = 18 V
6
â¢â¢â¢
Rg
5
â¢â¢â¢
* THE ARROWS INDICATE THE DIRECTION
OF CURRENT FLOW DURING âdVCM/dt.
+â
VCM
Figure 23. Equivalent Circuit for Figure 17 During Common Mode Transient.
1
8
+5 V
CLEDP
2
7
3
6
Q1
CLEDN
ILEDN
4
5
SHIELD
Figure 24. Not Recommended Open Collector Drive Circuit.
13
1
8
+5 V
CLEDP
2
7
3
6
CLEDN
4
5
SHIELD
Figure 25. Recommended LED Drive Circuit for Ultra-High CMR IPM
Dead Time and Propagation Delay Specifications.
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