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Analog Devices ADUM3221BRZ — Power Management (PMIC / Gate Driver)

ADUM3221BRZ iCoupler Isolated Gate Driver, 4 A, 2500 Vrms

MPNADUM3221BRZ
End of Life

ADI iCoupler isolated gate driver, ADUM3221BRZ, 2-channel, 4 A peak output, 2500 Vrms isolation, 25 kV/µs CMTI, 60 ns prop delay, 8-SOIC, -40 to 125 °C.

$6.0Ref. price · indicative, final on quote
Packaging8-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
SeriesiCoupler®
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

ADUM3221BRZ specifications
ParameterValue
SeriesiCoupler®
MountingSurface Mount
Voltage - isolation2500Vrms
Voltage - output supply7.6V ~ 18V
Current - peak output4A
Operating temperature-40°C ~ 125°C
Approval agencyCSA, UR, VDE
PackageTube
TechnologyMagnetic Coupling
Case8-SOIC (0.154\", 3.90mm Width)
Channels2
Rise (Fall time)20ns, 20ns
Propagation delay tpLH (tpHL)60ns, 60ns
Common mode transient immunity25kV/µs

Product details

Isolated gate driver for IGBT and SiC MOSFET switching

It delivers 4 A peak output current across a 2500 Vrms isolation barrier, with a common-mode transient immunity of 25 kV/µs minimum and matched 60 ns propagation delays on both edges. Typical applications include IGBT and MOSFET gate drive in motor drives, industrial power supplies, solar inverters, and isolated DC-DC converters where reinforced isolation and fast, clean switching are required.

The 4 A peak output current charges gate capacitance within the required switching window. With 20 ns typical rise and fall times, the driver handles gates in the tens of nC range.

Isolation and transient immunity for inverter environments

With 2500 Vrms reinforced isolation and a minimum common-mode transient immunity of 25 kV/µs, this driver is built for the noisy, high-dV/dt environment of a motor-drive inverter or a power-factor-correction stage. The 60 ns maximum propagation delay on both edges is matched, which simplifies dead-time calculation in half-bridge and full-bridge topologies — the designer can budget the same delay for turn-on and turn-off without adding margin for mismatch.

Frequently asked questions

What is the ADUM3221BRZ equivalent or replacement?

The ADUM3221ARZ is a functionally identical variant (same 4 A peak output, 2500 Vrms isolation, 25 kV/µs CMTI, 60 ns propagation delay) in the same iCoupler series. The ADUM3220ARZ is a 2-channel driver with identical ratings but a different channel configuration — verify the pinout before substituting.

Can ADUM3221BRZ drive IGBTs?

Yes. The 4 A peak output current and 20 ns rise/fall times are sufficient to drive the gate capacitance of medium-power IGBT modules and discrete IGBTs in motor drives and power converters. The 7.6 V to 18 V output supply range covers the typical 12 V to 15 V gate drive levels for IGBTs.