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ICs intended for Energy-Efficient Automotive Gate Drive Applications

Wed, 08/25/2010 - 8:41am

AUIRS218xxInternational Rectifier today announced the introduction of a family of rugged 600 V ICs for energy-efficient automotive gate drive applications including Piezo and common rail injection, starter alternator, electronic power steering, fan and compressor applications.

The family of five high speed power MOSFET and IGBT driver ICs provides output source/sink current capability up to +1.9 A/-2.3 A for rapid turn-on and turn-off time, while high current capability enables the new devices to efficiently drive larger switches for higher power applications. The offering includes two half-bridge drivers; the AUIRS2184S, featuring a fixed deadtime of 500 ns and the AUIRS21844S featuring programmable deadtime between 400 ns and 5 µs. The AUIRS2181S, AUIRS21811S and AUIRS21814S are dual channel high-side and low-side driver ICs with various input logic and propagation delays.

“This new family of 600 V Q100 qualified ICs expands IR’s dedicated automotive offering to provide the flexibility to design an optimized gate drive for a given system,” said Marzak Li, product marketing manager, IR’s Automotive Products Business Unit.

The new ICs feature proprietary high-voltage integrated circuit (HVIC) and latch immune CMOS technologies to offer ruggedized 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 600 V. 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, 3.3 V and 5 V input logic compatibility and lower di/dt for better noise immunity. A separate Vss logic ground pin featured in specific parts offers 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 IR’s automotive quality initiative targeting zero defects.

Specifications

Part Number

Topology

High-side Supply Offset Voltage

Package

Output Source / Sink Current

Vcc Range

Vbs Range

Typ. Prop Delay

AUIRS2181S

Dual Channel High- and Low-Side Driver

600 V

SOIC8

+1.9 A / -2.3 A

10-20 V w/UVLO

10-20 V w/UVLO

160/220 ns On/Off

AUIRS21811S

Dual Channel High- and Low-Side Driver

600 V

SOIC8

+1.9 A / -2.3 A

10-20 V w/UVLO

10-20 V w/UVLO

135/135 ns On/Off

AUIRS21814S

Dual Channel High- and Low-Side Driver

600 V

SOIC14

+1.9 A / -2.3 A

10-20V w/UVLO

10-20 V w/UVLO

160/220ns On/Off

AUIRS2184S

Half-bridge Driver

600 V

SOIC8

+1.9 A / -2.3 A

10-20 V w/UVLO

10-20 V w/UVLO

600/230 ns On/Off

AUIRS21844S

Half-bridge Driver

600 V

SOIC14

+1.9 A / -2.3 A

10-20 V w/UVLO

10-20 V w/UVLO

600/230 ns On/Off

Datasheets, application notes and qualification standards are available on the International Rectifier website at www.irf.com.

Availability and Pricing

Pricing for the family of devices ranges from US $0.50 to US $0.90 each in 100,000-unit quantities. Production orders are available immediately. Prices are subject to change.

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