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GENERAL DESCRIPTION

The ADuM4221/ADuM4221-1/ADuM4221-2 are 4 A isolated, half bridge gate drivers that employ the Analog Devices, Inc.,

iCoupler? technology to provide independent and isolated

high-side and low-side outputs. The ADuM4221/ADuM4221-1/ ADuM4221-2 provide 5700 V rms isolation in an increased creepage wide body, 16-lead SOIC_IC. Combining high speed

CMOS and monolithic transformer technology, these isolation

components provide outstanding performance characteristics

superior to the alternatives, such as the combination of pulse

transformers and gate drivers. The isolators operate with a logic input voltage ranging from

2.5 V to 6.5 V, providing compatibility with lower voltage

systems. In comparison to gate drivers employing high voltage

level translation methodologies, the ADuM4221/ADuM4221-1/

ADuM4221-2 offer the benefit of true, galvanic isolation

between the input and each output.

The ADuM4221/ADuM4221-1 each have built in overlap

protection and allow dead time adjustment. A single resistor

between the dead time pin (DT) and the GND1 pin sets the

dead time on the secondary side between the high-side and the low-side outputs. The ADuM4221-2 does not have overlap

protection nor dead time control.

An internal thermal shutdown (TSD) sets outputs low if

the internal temperature on the ADuM4221/ADuM4221-1/

ADuM4221-2 exceeds the TSD temperature. As a result,

the ADuM4221/ADuM4221-1/ADuM4221-2 provide reliable control over the switching characteristics of the insulated gate

bipolar transistor (IGBT)/metal-oxide semiconductor field

effect transistor (MOSFET) configurations over a wide range

of positive or negative switching voltages.

FEATURES

4 A peak current (<2 Ω RDSON_x)

2.5 V to 6.5 V logic input voltage

4.5 V to 35 V output supply voltage

UVLO VDD1 positive going threshold: 2.5 V maximum Multiple UVLO options for VDDA and VDDB positive going

threshold

Grade A: 4.5 V maximum Grade B: 7.5 V maximum Grade C: 11.6 V maximum Precise timing characteristics

44 ns maximum propagation delay Adjustable dead time and dual input (ADuM4221) Adjustable dead time and single input (ADuM4221-1) No dead time control and dual input (ADuM4221-2) CMOS input logic levels

High common-mode transient immunity: 150 kV/μs

High junction temperature operation: 125°C Default low output

Safety and regulatory approvals (pending)

UL recognition per UL 1577 5700 V rms for 1 minute duration

CSA Component Acceptance Notice 5A

VDE certificate of conformity

DIN V VDE V 0884-11: VIORM = 849 V peak Increased creepage wide body, 16-lead SOIC_IC

APPLICATIONS

Switching power supplies

Isolated IGBT/MOSFET gate drives

Industrial inverters

Gallium nitride (GaN)/silicon carbide (SiC) compatible