Automotive-grade isolated gate driver for traction and motor-drive applications
The ADUM4223WBRWZ is a dual-channel, isolated gate driver from Analog Devices' iCoupler® family, built on magnetic coupling technology and qualified to automotive grade. It delivers 4 A peak output current across two channels with 5000 Vrms isolation, making it suitable for driving SiC MOSFETs and IGBTs in traction inverters, on-board chargers, and high-voltage DC-DC converters where reinforced isolation and galvanic separation are required.
Why the 50 kV/µs CMTI rating matters in a motor-drive environment
With a minimum common-mode transient immunity of 50 kV/µs, this driver can maintain clean gate signals even when the switching node slews at thousands of volts per microsecond — a common condition in hard-switched inverter bridges. Without that margin, fast transients can couple through the isolation barrier and falsely trigger the power switch, which in an automotive traction system means a desaturation fault or a shoot-through event.
54 ns propagation delay — timing budget for high-frequency switching
Propagation delay is matched at 54 ns max for both rising and falling edges, with 12 ns typical rise and fall times. In a 100 kHz+ switching converter this symmetrical delay keeps dead-time margins predictable and avoids duty-cycle distortion that would show up as output ripple or transformer saturation.
Package, supply, and approvals
Carries CSA, UR, and VDE safety approvals, and is ROHS3 compliant.
Sourcing posture for the ADUM4223WBRWZ
ADI lists this part as Active.