HCPL-4506-000E Datasheet, PDF (18/21 Pages) AVAGO TECHNOLOGIES LIMITED – Intelligent Power Module and Gate Drive Interface Optocouplers

1
8
I_TOTAL* I_CLEDP
20
kΩ
310 Ω
2
I_F
C_LED02
C_LEDP
7
C_LED01
I_CLED01
3
6
C_LEDN
4
5
SHIELD
V_OUT
20 kΩ
100 pF
* THE ARROWS INDICATE THE DIRECTION OF CURRENT
FLOW FOR +dV_CM/dt TRANSIENTS.
+
V_CM
Figure 19. AC equivalent circuit for Figure 18 during common mode
transients.
HCPL-4506 fig 23-new
310 Ω
+ V_R** –
1
8
20
2
C_LEDPCLED02 ^kΩ
7
C_LED01
3
C_LEDN
6
I_CLEDN*
4
5
SHIELD
V_OUT
20 kΩ
100 pF
* THE ARROWS INDICATE THE DIRECTION OF CURRENT
FLOW FOR +dV_CM/dt TRANSIENTS.
** OPTIONAL CLAMPING DIODE FOR IMPROVED CMH
PERFORMANCE. V_R < V_{F (OFF)} DURING +dV_CM/dt.
+
V_CM
HCPL-4506 fig 24-new
Figure 20. AC equivalent circuit for Figure 15 during common mode
transients.
+5 V
Q1
1
8
20 kΩ
2
7
3
6
4
5
SHIELD
Figure 21. Not recommended open collector LED
drive circuit.
HCPL-4506 fig 25-new
1
8
20
2
C_{LEDP CLED02} ^kΩ
7
20 kΩ
C_LED01
Q1
3
C_LEDN
V_OUT
6
I_CLEDN*
100 pF
4
5
SHIELD
* THE ARROWS INDICATE THE DIRECTION OF CURRENT
FLOW FOR +dV_CM/dt TRANSIENTS.
+
V_CM
Figure 22. AC Equivalent circuit for Figure 21 during common mode
transients.
HCPL-4506 fig 26-new
1
+5 V
2
8
20 kΩ
7
3
6
4
5
SHIELD
Figure 23. Recommended LED drive circuit for
ultra high CMR.
HCPL-4506 fig 27
18