ADUM3220BRZ Datasheet, PDF (1/16 Pages) Analog Devices – Isolated, 4 A Dual-Channel Gate Driver

Data Sheet
Isolated, 4 A Dual-Channel Gate Driver
ADuM3220/ADuM3221
FEATURES
4 A peak output current
Precise timing characteristics
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
4.5 V to 18 V output drive
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
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
VIORM = 560 V peak
Small footprint and low profile
Narrow body, RoHS-compliant, 8-lead SOIC
5 mm × 6 mm × 1.6 mm
Qualified for automotive applications
APPLICATIONS
Isolated synchronous dc-to-dc converters
MOSFET/IGBT gate drivers
GENERAL DESCRIPTION
The ADuM3220/ADuM3221¹ are isolated, 4 A dual-channel gate
drivers based on the Analog Devices, Inc., iCoupler® technology.
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.
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.
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.
The junction temperature of the ADuM3220/ADuM3221 is
specified from −40°C to +125°C.
FUNCTIONAL BLOCK DIAGRAMS
V_DD1 1
V_IA 2
ADuM3220
ENCODE
V_IB 3
GND₁ 4
ENCODE
DECODE
AND
LEVEL
SHIFT
DECODE
AND
LEVEL
SHIFT
8 V_DD2
7 V_OA
6 V_OB
5 GND₂
V_DD1 1
V_IA 2
V_IB 3
GND₁ 4
ENCODE
ENCODE
ADuM3221
DECODE
AND
LEVEL
SHIFT
DECODE
AND
LEVEL
SHIFT
8 V_DD2
7 V_OA
6 V_OB
5 GND₂
Figure 1.
Figure 2.
1 _{Protected by U.S. Patents 5,952,849; 6,873,065; 7,075,239.}
Rev. C
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