HCPL-316 ETC, HCPL-316 Datasheet - Page 27

• Manufacturer Part Number: HCPL-316
• Description: 2.0 Amp Gate Drive Optocoupler with Integrated (VCE) Desaturation Detection and Fault Status Feedback
• Manufacturer: ETC

Figure 73a. Safe Hardware Reset for Non-Inverting
Input Configuration (Automatically Resets for Every
V
Figure 73c. Safe Hardware Reset for Inverting Input
Configuration.
User-Configuration of the
HCPL-316J Output Side
R
The value of the gate resistor R
(along with V
determines the maximum amount
of gate-charging/discharging
current (I
and thus should be carefully
chosen to match the size of the
IGBT being driven. Often it is
desirable to have the peak gate
charge current be somewhat less
IN+
G
µC
µC
and Optional Resistor R
Input).
V
RESET
FAULT
RESET
FAULT
V
IN+
IN-
/
ON,PEAK
CC2
V
V
V
CC
CC
CC
and V
and I
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
OFF,PEAK
EE
V
V
V
GND1
RESET
FAULT
V
V
V
V
V
GND1
RESET
FAULT
V
V
IN+
IN-
CC1
LED1+
LED1-
IN+
IN-
CC1
LED1+
LED1-
)
C
:
G
HCPL-316J
HCPL-316J
)
than the peak discharge current
(I
condition, an optional resistor
(R
to independently determine
I
using a steering diode. As an
example, refer to Figure 74.
Assuming that R
determined and that the design
I
can be estimated in the following
way:
ON,PEAK
OH,PEAK
ON,PEAK
C
) can be used along with R
and I
= 0.5 A, the value of R
< I
OFF,PEAK
OFF,PEAK
G
Figure 73b. Safe Hardware Reset for Non-Inverting Input
Configuration.
Figure 73d. Safe Hardware Reset for Inverting Input
Configuration (Automatically Resets for Every V
Input).
is already
µC
µC
). For this
without
RESET
FAULT
V
FAULT
IN-
V
RESET
IN+
G
C
V
V
V
CC
CC
CC
27
R
See “Power and Layout
Considerations” section for more
information on calculating value
of R
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
C
+ R
G
V
V
V
GND1
RESET
FAULT
V
V
V
V
V
GND1
RESET
FAULT
V
V
IN+
IN-
CC1
LED1+
LED1-
IN+
IN-
CC1
LED1+
LED1-
.
G
= [V
= [4 V – (-5 V)]
= 18
HCPL-316J
HCPL-316J
R
C
CC2
= 8
0.5 A
– V
I
OH,PEAK
OH
IN-
– (V
EE
)]