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.

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