Automotive-grade isolated gate driver with 4 A peak drive
It delivers 4 A peak output current across a 3000 Vrms isolation barrier, with a maximum propagation delay of 54 ns and 50 kV/µs common-mode transient immunity. It carries CSA and UR approvals and is ROHS3 compliant.
The 4 A peak output is enough to drive the gate charge of medium-power SiC MOSFETs and GaN HEMTs without excessive switching loss — expect clean turn-on edges with the 12 ns rise/fall times. The 3000 Vrms isolation covers reinforced insulation requirements for motor-drive and inverter applications up to 600 V bus voltage, assuming proper creepage on the PCB. The 50 kV/µs CMTI keeps the output state stable during hard-switching events; if you see spurious pulses on the gate waveform, check the layout first, not the part. The 54 ns max propagation delay is symmetric (tpLH = tpHL), which simplifies dead-time calculation — budget 60 ns minimum dead time to account for the delay plus driver mismatch.
Lifecycle and sourcing posture
For dual-sourcing, the ADUM3224WBRZ is the automotive-qualified variant of the base ADUM3224 family — the 'W' suffix denotes AEC-Q100 compliance. If your BOM requires a non-automotive grade, the standard ADUM3224BRZ is a functional equivalent (same pinout, same ratings, commercial temperature range).