HCPL-316 ETC, HCPL-316 Datasheet - Page 2

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

Typical Fault Protected
IGBT Gate Drive Circuit
The HCPL-316J is an easy-to-use,
intelligent gate driver which
makes IGBT V
compact, affordable, and easy-to-
implement. Features such as user
Figure 1. Typical Desaturation Protected Gate Drive Circuit, Non-Inverting.
Description of Operation
during Fault Condition
1. DESAT terminal monitors the
2. When the voltage on the
3. FAULT output goes low,
4. Microcontroller takes
Output Control
The outputs (V
of the HCPL-316J are controlled
by the combination of V
and a detected IGBT Desat
condition. As indicated in the
below table, the HCPL-316J can
µC
IGBT V
D
DESAT terminal exceeds
7 volts, the IGBT gate voltage
(V
notifying the microcontroller
of the fault condition.
appropriate action.
DESAT
OUT
R
F
) is slowly lowered.
CE
.
voltage through
+
–
CE
* THESE COMPONENTS ARE ONLY REQUIRED WHEN NEGATIVE GATE DRIVE IS IMPLEMENTED.
OUT
fault protection
and FAULT)
IN
1
2
3
4
5
6
7
8
, UVLO
V
V
V
GND1
RESET
FAULT
V
V
IN+
IN-
CC1
LED1+
LED1-
HCPL-316J
configurable inputs, integrated
V
lockout (UVLO), “soft” IGBT
turn-off and isolated fault feed-
back provide maximum design
flexibility and circuit protection.
be configured as inverting or
non-inverting using the V
V
inverting configuration is desired,
V
toggled. When a non-inverting
configuration is desired, V
must be held low and V
toggled. Once UVLO is not active
(V
allowed to go high, and the
CE
V
High
IN-
IN+
Low
CC2
IN+
X
X
X
detection, under voltage
inputs respectively. When an
must be held high and V
- V
High
Low
V
E
V
DESAT
IN-
X
X
X
LED2+
V
> V
V
OUT
CC2
V
V
V
V
EE
EE
C
E
UVLO
(V
Not Active
16
15
14
13
12
11
10
9
CC2
UVLO
Active
), V
X
X
X
- V
IN+
OUT
IN+
E
*
IN-
)
is
R
or
IN-
PULL-DOWN
*
Desat Condition
Detected on
C
BLANK
100
Pin 14
2
+
–
+
–
DESAT (pin 14) detection feature
of the HCPL-316J will be the
primary source of IGBT protection.
UVLO is needed to ensure DESAT
is functional. Once V
V, DESAT will remain functional
until V
DESAT detection and UVLO
features of the HCPL-316J work in
conjunction to ensure constant
IGBT protection.
Yes
No
X
X
X
*
D
+
DESAT
V
UVLO-
F
R
–
G
< 12.4 V. Thus, the
(FAULT)
Output
Pin 6
High
Low
X
X
X
UVLO+
+
–
+
–
V
V
CE
CE
V
High
Low
Low
Low
Low
OUT
> 11.6