Avago Technologies ACPL-224-500E - Manual (Page 54)

AV02-4387EN 51 Avago Technologies
Isolated Gate Drive for IGBT/MOSFET with Integrated Desaturation Protection and Fault Feedback
Motor Control Applications
Description
The HCPL-316J drives IGBTs or
MOSFETs directly and provides addi-
tional IGBT desaturation protection.
The Vce of the IGBT is monitored
by Desat pin and the IGBT will be
slowly turned off if Vdesat exceeds
a threshold of 7 V. A fault feedback
signal is propagated to the input
side to notify the micro-controller
of the detected fault condition.
This FAULT output remains low until
the part is reset. The 100 pF blank-
ing capacitor shown in the diagram
above will delay the rise of V
Desat
for
a period of around 4 µs to allow the
IGBT sufficient time to turn on and
the collector to settle to a low V
Desat
.
Performance of Circuit
• Gate Drive Current : 2.0 A
• Common mode Transient Rejec-
tion: 15 kV/ µs@V
CM
= 1.5 kV
• IGBT gate protection response
time: 3 µs.
• IGBT fault signal propagation de-
lay: 10 µs.
Benefits:
• Reduced assembly costs
• CMOS/TTL compatible
• Local IGBT soft shutdown
• Worldwide regulatory approval
Alternative Avago Parts
1) HCPL-315J 0.5 Amp Dual IGBT
Gate Driver
2) HCPL-3150 0.5 Amp Isolated IGBT
Gate Driver
3) HCPL-J314 0.4 amp Isolated IGBT
Gate driver
4) HCPL-314J 0.4 Amp Dual IGBT
Gate Driver
5) HCPL-3120 2.0Amp Isolated Gate
Driver.
3-PHASE
OUTPUT
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
VIN+
VIN–
V
CC 1
GND1
RESET
FAULT
VLED1+
VLED1–
VE
VLED2+
DESAT
V CC 2
VC
VOUT
V EE
V EE
HCPL-316J
20k
1k
20k
300 pF
DESAT
FAULT
(OUTPUT)
MICRO-CONTROLLER
V CC 1
5 V
DRIVE
SIGNAL
(INPUT)
RESET
(INPUT)
74ACT04
0.1 µF
3.3 k
0.1 µF
0.1 µF
0.1 µF
V CC 2
-5 V
V CC 2
18 V
HV DIODE
RDESATH
RGATEH
Rg =
V
CC
– V
EE
– V
OL
I
ON