Half-bridge gate driver with 600 V bootstrap and 1.9 A peak drive
The IR21844STRPBF is a half-bridge gate driver from Infineon that drives IGBTs and N-Channel MOSFETs in synchronous half-bridge configurations. It delivers 1.9 A peak source and 2.3 A peak sink current to charge and discharge the gate capacitance quickly, keeping switching losses low in motor-drive and inverter stages. The bootstrap supply supports a high-side voltage up to 600 V, which sets the maximum DC-link voltage the driver can handle — a hard ceiling for the power stage design. Rise and fall times are 40 ns and 20 ns typical.
Supply range, logic thresholds, and temperature grade
The supply voltage range is 10 V to 20 V. Logic inputs accept 0.8 V low and 2.7 V high thresholds. The 14-SOIC package is a common footprint. Compared to the IR21064STRPBF, which drives high-side or low-side independently with 0.2 A peak and 150 ns / 50 ns edges, the IR21844STRPBF offers 1.9 A peak and 40 ns rise time.