Isolation and drive for power-stage gate control
The ADUM4146CRWZ: It is designed to drive IGBTs, MOSFETs, and SiC FETs in motor drives, solar inverters, and industrial power supplies where galvanic isolation of the gate signal is mandatory. The part delivers 5000Vrms isolation and a peak output current of 4.61A, with separate high/low drive ratings of 11A and 9A to handle the gate charge of large power switches cleanly. The output supply range splits into two rails — 2.5V to 6V for the logic side and 12V to 30V for the gate-drive side — so a single device can bridge a 3.3V controller to a 15V or 24V gate bus without a level shifter.
Timing and transient immunity — the specs that matter for fast switching
Propagation delay is specified at 100ns maximum for both tpLH and tpHL, with matched edges that simplify dead-time calculation in half-bridge and full-bridge topologies. The 16ns typical rise and fall times keep switching losses low at moderate frequencies. Common-mode transient immunity is rated at a minimum of 100kV/µs, which is essential for maintaining gate integrity in fast-switching SiC or GaN converters where high dv/dt at the switch node would otherwise couple noise across the isolation barrier.
Package, approvals, and lifecycle
Housed in a 16-SOIC wide-body package (7.50mm body width) with surface-mount termination, the ADUM4146CRWZ carries safety approvals from CSA, UL, and VDE, supporting reinforced insulation designs that must meet IEC 60747-5-5 or similar standards. The device is listed as Active in lifecycle and is ROHS3 compliant, so there is no end-of-life risk for ongoing production. The shipping medium is Tube; reel and tape options may be available under alternate order codes.