The ADUM4221CRIZ from Analog Devices is an isolated half-bridge gate driver designed for IGBTs, delivering 4 A source and 6 A sink peak output current from a 2.5 V to 6.5 V supply rail. The wide-body 16-SOIC package (7.50 mm width) provides the creepage distance needed for reinforced isolation in motor drives, uninterruptible power supplies, solar inverters, and industrial power converters operating from -40°C to 125°C junction temperature.
Peak output current — sizing the gate drive
The 4 A source / 6 A sink peak rating determines how fast the IGBT gate capacitance charges and discharges. A higher sink current than source is common for IGBTs to pull the gate low quickly during turn-off, reducing switching losses and cross-conduction risk.
Package and isolation considerations
The 16-SOIC wide-body (7.50 mm width) is a surface-mount package. The wide creepage distance between input and output sides is essential for meeting isolation standards in motor-drive and inverter designs.
For new designs, this part is a current-production choice with no imminent obsolescence risk.