Rugged ICs target automotive applications

Other applications include starter-alternators and electronic power steering.

The family of five high-speed power Mosfet and IGBT driver ICs provide output source/sink current capability up to +1.9A/-2.3A for rapid turn-on and turn-off time; while high-current capability enables the devices to efficiently drive larger switches for higher-power applications.

The offering includes two half-bridge drivers: the AUIRS2184S, featuring a fixed dead-time of 500ns and the AUIRS21844S, featuring dead-time between 400ns and 5us.

The AUIRS2181S, AUIRS21811S and AUIRS21814S are dual-channel high-side and low-side driver ICs with various input logic and propagation delays.

The ICs feature proprietary high-voltage integrated circuit (HVIC) and latch-immune CMOS technologies to offer ruggedised monolithic construction.

The output drivers feature a high-pulse-current buffer stage designed for minimum driver cross-conduction.

The floating channel can be used to drive an N-channel power Mosfet or IGBT in the high-side configuration, operating up to 600V.

In addition, the devices feature benchmark negative voltage spike immunity for reliable operation even under extreme switching conditions and short-circuit events.

Other key features common to the family include under-voltage lockout for both channels, 3.3V and 5V input logic compatibility and lower di/dt for better noise immunity.

A separate Vss logic ground pin featured in specific parts offer higher immunity to transient shifts on COM voltage.

The devices are qualified according to AEC-Q100 standards, feature an environmentally friendly, lead-free and RoHS-compliant bill of materials, and are part of International Rectifier's automotive quality initiative targeting zero defects.