Intelligent power switch delivers active di/dt control for automotive motor control

May 24, 2011 // By Paul Buckley
International Rectifier has introduced the AUIR3330S Intelligent Power Switch (IPS) with a proprietary active di/dt control feature that significantly reduces conducted EMI and switching losses to simplify design and reduce overall system cost in automotive motor drive applications.

The new 40 V high-side device combines bootstrap regulator, charge pump and high-side driver into a single package to offer a highly integrated solution. The load can be driven up to 40 kHz at 100 percent of duty cycle.

Additionally, the AUIR3330S features programmable over-current and over-temperature protection required by applications operating in harsh automotive environments such as pumps and fans. The AUIR3330S also features current sensing feedback, a diagnostic function, low current consumption in sleep mode and ESD protection.

The device is qualified according to AEC-Q100 standards, features an environmentally friendly, lead-free and RoHS compliant bill of materials, and is part of IR’s automotive quality initiative targeting zero defects.

Available in a D2PAK package, pricing for the AUIR3330S begins at US $1.50 in 100,000-unit quantities. Production orders are available immediately.

More information about the AUIR3330S Intelligent Power Switch at
www.irf.com/product-info/datasheets/data/auir3330s.pdf.