Switches don't buckle in tough auto applications

March 8, 2007
A new family of fully protected, high-side intelligent power switches (IPSs) take advantage of next-generation silicon in enhanced packaging to deliver improved power density and response times. The IPS60xx family developed by International

A new family of fully protected, high-side intelligent power switches (IPSs) take advantage of next-generation silicon in enhanced packaging to deliver improved power density and response times. The IPS60xx family developed by International Rectifier is designed for rugged automotive applications, including transmission and gearbox; solenoid drivers; lighting control; and brushed dc motor control for seats, window lifts, and wipers.

The single-chip devices offer gains in RDS(on) and minimise board area for the overall solution. For example, the full-featured IPS6011 delivers a maximum on-state resistance of 14mΩ in a DPak.

Integrated power MOSFETs come with a host of standard protection features for overcurrent, overtemperature, electrostatic discharge, and active clamp. An integrated charge pump allows the device to be driven in high-side topologies without additional components.

The new IPS family, which also comes equipped with reverse battery protection, will actively turn on the output MOSFET during a reverse battery event. This feature nearly eliminates current flow throughout the body diode and significantly diminishes power dissipation.

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