Isolated, 4 A Dual-Channel Gate Driver
Data Sheet
ADuM3220/ADuM3221
FEATURES
GENERAL DESCRIPTION
The ADuM3220/ADuM32211 are isolated, 4 A dual-channel gate
4 A peak output current
Precise timing characteristics
drivers based on the Analog Devices, Inc., iCoupler® technology.
60 ns maximum isolator and driver propagation delay
5 ns maximum channel-to-channel matching
High junction temperature operation: 125°C
3.3 V to 5 V input logic
Combining high speed CMOS and monolithic transformer technol-
ogy, these isolation components provide outstanding performance
characteristics superior to the alternatives, such as the combination
of pulse transformers and gate drivers.
4.5 V to 18 V output drive
The ADuM3220/ADuM3221 provide digital isolation in two
independent isolation channels. They have a maximum propagation
delay of 60 ns and 5 ns channel-to-channel matching. In comparison
to gate drivers that employ high voltage level translation method-
ologies, the ADuM3220/ADuM3221 offer the benefit of true,
galvanic isolation between the input and each output, enabling
voltage translation across the isolation barrier. The ADuM3220
has shoot-through protection logic, which prevents both outputs
from being on at the same time, whereas the ADuM3221 allows
both outputs to be on at the same time. Both parts offer a default
output low characteristic as required for gate drive applications.
UVLO at 2.5 V VDD1
ADuM3220A/ADuM3221A UVLO at 4.1 V VDD2
ADuM3220B/ADuM3221B UVLO at 7.0 V VDD2
Thermal shutdown protection at >150°C
Output shoot-through logic protection on the ADuM3220
Default low output
High frequency operation: dc to 1 MHz
CMOS input logic levels
High common-mode transient immunity: >25 kV/μs
Enhanced system-level ESD performance per IEC 61000-4-x
Safety and regulatory approvals
The ADuM3220/ADuM3221 operate with an input supply voltage
ranging from 3.0 V to 5.5 V, providing compatibility with lower
voltage systems. The outputs of the ADuM3220A/ADuM3221A
can be operated at supply voltages from 4.5 V to 18 V. The outputs
of the ADuM3220B/ADuM3221B can be operated at supply
voltages from 7.6 V to 18 V.
UL recognition
2500 V rms for 1 minute per UL 1577
CSA Component Acceptance Notice #5A
VDE certificate of conformity
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
V
IORM = 560 V peak
Small footprint and low profile
Narrow body, RoHS-compliant, 8-lead SOIC
5 mm × 6 mm × 1.6 mm
The junction temperature of the ADuM3220/ADuM3221 is
specified from −40°C to +125°C.
Qualified for automotive applications
APPLICATIONS
Isolated synchronous dc-to-dc converters
MOSFET/IGBT gate drivers
FUNCTIONAL BLOCK DIAGRAMS
ADuM3220
ADuM3221
1
2
8
7
1
2
8
7
V
V
V
V
V
V
DD1
DD2
OA
DD1
DD2
OA
DECODE
AND
DECODE
AND
ENCODE
ENCODE
ENCODE
V
V
IA
IA
LEVEL
SHIFT
LEVEL
SHIFT
DECODE
AND
LEVEL
SHIFT
DECODE
AND
LEVEL
SHIFT
3
4
ENCODE
6
5
3
4
6
5
V
V
V
V
IB
OB
IB
OB
GND
GND
GND
GND
2
1
2
1
Figure 1.
Figure 2.
1 Protected by U.S. Patents 5,952,849; 6,873,065; 7,075,239.
Rev. C Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registeredtrademarks arethe property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2010–2012 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
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