HALF-BRIDGE GATE DRIVER Integrated Circuit Chip IC IR21141SSPBF

Features

• Floating channel up to 600 V or 1200 V

• Soft over-current shutdown

• Synchronization signal to synchronize shutdown with the other phases

• Integrated desaturation detection circuit

• Two stage turn on output for di/dt control Package

• Separate pull-up/pull-down output drive pins

• Matched delay outputs

• Undervoltage lockout with hysteresis band

• Lead free

Description

The IR21141/IR22141 gate driver family is suited to drive a single half bridge

in power switching applications. These drivers provide high gate driving

capability (2 A source, 3 A sink) and require low quiescent current, which

allows the use of bootstrap power supply techniques in medium power

systems. These drivers feature full short circuit protection by means of power

transistor desaturation detection and manage all half-bridge faults by

smoothly turning off the desaturated transistor through the dedicated soft

shutdown pin, therefore preventing over-voltages and reducing

electromagnetic emissions. In multi-phase systems, the IR21141/IR22141

drivers communicate using a dedicated local network (SY_FLT and

FAULT/SD signals) to properly manage phase-to-phase short circuits. The

system controller may force shutdown or read device fault state through the

3.3 V compatible CMOS I/O pin (FAULT/SD). To improve the signal immunity

from DC-bus noise, the control and power ground use dedicated pins

enabling low-side emitter current sensing as well. Undervoltage conditions in

floating and low voltage circuits are managed independently.

Typical connection

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