Gate-driver fit for motor-drive and inverter stages
The FOD8332R2 is an onsemi single-channel optoisolated gate driver in a surface-mount package. It delivers a 3A peak output current with 4243Vrms isolation between input and output, making it a direct fit for driving IGBTs and power MOSFETs in motor drives, UPS, and solar inverter stages where galvanic isolation is required. The 35kV/µs common-mode transient immunity (CMTI) ensures the driver does not false-trigger under the fast voltage slewing typical of a 3-phase inverter bridge. The 50ns typical rise and fall times keep switching losses low in the power stage.
The 4243Vrms isolation voltage is the safety barrier rating — it determines where this part can be used in reinforced-insulation designs per UL. The 3A peak output with 2.5A source/sink capability drives the gate charge of a typical 50A IGBT in under 250ns propagation delay, which keeps the dead-time margin tight. The 100ns maximum pulse-width distortion matters for dead-time accuracy in half-bridge configurations — a 100ns skew between the high-side and low-side channels can push the dead-time below the IGBT's minimum safe threshold. The 1.45V typical forward voltage at 25 mA max forward current sets the LED drive current budget on the primary side.
Sourcing posture and compliance
ROHS3 compliant. Supplied in Tape & Reel (TR) or Cut Tape (CT) options.