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
