ACPL-344JT
Automotive 2.5A Gate-Drive Optocoupler
with Integrated IGBT Desat Overcurrent Sensing,
Miller-Current Clamping, and Under-Voltage Lockout Feedback
Data Sheet
CAUTION: It is advised that normal static precautions be taken in handling and assembly
of this component to prevent damage and/or degradation which may be induced by ESD.
Figure 1. ACPL-344JT Functional Diagram.
Description
The Avago Technologies Automotive 2.5A Gate-Drive
Optocoupler features fast propagation delay with
excellent timing-skew performance. Smart features that
are integrated to protect the IGBT include IGBT
desaturation sensing with soft-shutdown protection
and fault feedback, under-voltage lockout and feedback,
and active Miller-current clamping. This full-featured
and easy-to-implement IGBT gate-drive optocoupler
comes in a compact, surface-mountable SO-16 package
for space savings. It is suitable for traction power-train
inverter, power converter, battery charger, air-con, and
oil-pump motor drives in HEV and EV applications and
satises automotive AEC-Q100 semiconductor
requirements.
Avago's R
2
Coupler isolation products provide reinforced
insulation and reliability that deliver safe-signal isolation
critical in automotive and high-temperature industrial
applications.
Functional Diagram
Features
Qualied to AEC-Q100 Grade 1 Test Guidelines
Automotive temperature range: –40°C to +125°C
Common Mode Rejection (CMR): >50 kV/μs at
V
CM
= 1500V
High Noise Immunity:
Miller-Current Clamping
Direct LED input with low-input impedance and
low-noise sensitivity
Negative Gate Bias
Peak output current: 2.5A max.
Miller Clamp-Sinking Current: 1.9A max.
Wide Operating Voltage: 15V to 25V
Propagation delay: 250 ns max.
Integrated fail-safe IGBT protection
Desat sensing, 'Soft' IGBT turn-o, and Fault
Feedback
Under-Voltage Lock-Out protection (UVLO) with
Feedback
SO-16 package with 8 mm clearance and creepage
Regulatory approvals:
UL1577, CSA
IEC/EN/DIN EN 60747-5-5
Applications
Automotive isolated IGBT/MOSFET inverter gate drive
Automotive DC-DC converter
AC and brushless-DC motor drives
Industrial inverters for power supplies and motor
controls
Uninterruptible power supplies (UPS)
VE
LED2+
VCC2
/UVLO
UVLO
Over
DESAT
VO
VCC1
VEE1
CA
/FAULT
AN
Current
Input
Driver
Output
Driver
4
13 12
2
3
5
6
1
7
8
15
14
11
10
16
VEE2
SS Control
Miller Control
NC
NC
9
VEE2
SSD/
CLAMP
2
Ordering Information
Part Number RoHS Compliant Package Surface Mount Tape and Reel IEC/EN/DIN EN
60747-5-5
Quantity
ACPL-344JT -000E SO-16 X X 45 per tube
ACPL-344JT -500E X X X 850 per reel
To order, choose a part number from the Part Number column and combine with the desired option from the RoHS
Compliant column to form an order entry.
Example 1:
ACPL-344JT-500E orders the SO-16 Surface Mount package in Tape and Reel packaging with RoHS-compliant IEC/EN/
DIN EN 60747-5-5 Safety Approval.
Option data sheets are available. Contact your Avago sales representative or authorized distributor for information.
Package Outline Drawings
16-Lead Surface Mount
Recommended Lead-free IR Prole
Recommended reow condition as per JEDEC Standard, J-STD-020 (latest revision).
Non-halide ux should be used.
Dimensions in millimeters (inches)
Note:
Lead coplanarity = 0.10 mm (0.004 inches)
Floating lead protrusion = 0.25 mm (0.010 inches) max.
Mold Flash on each side = 0.127 mm (0.005 inches) max.
A 344JT
YYWW
EE
Part Number
Date Code
Recommended Land Pattern
Stando
8.763 ±0.254
(0.345 ±0.010)
0.635 min.
(0.025)
10.363 ±0.254
(0.408 ±0.010)
0.254 typ.
(0.010)
1.270 BSC
(0.050)
0.457 typ.
(0.018)
11.634
(0.458)
2.160
(0.085)
(0 to 8°)
9°(×4)
0.635
(0.025)
9°(×4)
RoHS
Compliance
Indicator
3.505 ±0.127
(0.138 ±0.005)
0.203 ±0.102
(0.008 ±0.004)
Extended
Datecode for
lot tracking
7.493
+0.254
–0.127
(0.295
10.363
(0.408
+0.010)
–0.005)
+0.254
–0.127
+0.010)
–0.005)
1.270
(0.050)
3
Product Overview Description
The ACPL-344JT (shown in Figure 1) is a highly integrated power control device that incorporates all the necessary
components for a complete, isolated IGBT gate-drive circuit. It features IGBT desaturation sensing with soft-shutdown
protection and fault feedback, under-voltage lockout and feedback, and active Miller current clamping in a SO-16
package. Direct LED input allows exible logic conguration and dierential current-mode driving with low-input
impedance—greatly increasing noise immunity.
Package Pin Out
Figure 2. Pin-out of ACPL-344JT
Pin Description
Pin Name Function Pin Name Function
VEE1 Input common VEE2 Negative power supply
NC No connection LED2+ No connection, for testing only
VCC1 Input power supply DESAT Desat overcurrent sensing
NC No connection VE IGBT Emitter Reference
/UVLO VCC2 undervoltage lockout feedback VCC2 Positive power supply
/FAULT Overcurrent fault feedback VO Driver output to IGBT gate
AN Input LED anode SSD/CLAMP Soft Shutdown/Miller Current clamping output.
(For proper functionality, this pin must be connected to
the gate of the IGBT directly or through a current buer.)
CA Input LED cathode VEE2 Negative Power Supply
16
15
14
13
12
11
10
9
LED2+
VCC2
VEE2
VEE2
VO
VE
1
2
3
4
5
6
7
8
NC
VEE1
AN
CA
/FAULT
/UVLO
DESAT
VCC1
NC
SSD/CLAMP

ACPL-344JT-500E

Mfr. #:
Manufacturer:
Broadcom / Avago
Description:
High Speed Optocouplers Auto Optocoupler
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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