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Gate driver IC simplifies and shrinks design

International Rectifier has launched the AUIRS2332J 600V three phase gate driver IC for automotive high voltage motor drives for electric and hybrid electric vehicle applications.

The high voltage, high speed power mosfet and igbt driver features three independent high and low side referenced output channels. Proprietary HVIC technology is said to enable ruggedised monolithic construction with logic inputs compatible with cmos or LSTTL outputs, down to 3.3V logic.

The new device also offers an integrated ground referenced operational amplifier to provide analogue feedback of the bridge current via an external current sense resistor, current trip function and open drain FAULT signal to indicate over current or under voltage shutdown. The IC is housed in a PLCC44 package, providing higher creepage distances between high voltage pins and simplifying pcb layout.

The AUIRS2332J is fully characterised for negative transients on the switching node that may occur during normal operation and protection mode for increased system robustness. Its output drivers feature a high pulse current buffer stage designed for minimum driver cross conduction. Propagation delays are matched to simplify use at high frequencies and the floating channel can be used to drive N channel power mosfet or igbt in the high side configuration.

Laura Hopperton

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