High-side intelligent power switches improve power density and response time

21 March 2007 Power Electronics / Power Management

International Rectifier says its new family of fully-protected, high-side intelligent power switches (IPS) use next-generation silicon in enhanced packaging to deliver improved power density and response times. The company's new IPS60xx family is designed for tough automotive applications, including transmission and gearbox, solenoid drivers; lighting control; and brushed DC motor control for seats, window lifts, and wipers.

The IPS60xxPBF family integrates power MOSFETs with a host of standard protection features for over-current, over-temperature, ESD, and active clamp. An integrated charge pump allows the device to be driven in high-side topologies without additional components.

The IPS family also features reverse battery protection, actively turning on the output MOSFET during a reverse battery event. This feature almost eliminates current flow through the body diode and significantly reduces power dissipation in the part during an event, says IR, improving reliability and again eliminating the need for more components.

The new IPS devices also provide diagnostic feedback to the microcontroller, allowing detection of basic faults such as open load and short circuit.

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