Intelligent Power Switch
07 June 2011
IR introduces highly integrated AUIR3330S with active di/dt control for automotive motor control.
International Rectifier’s AUIR3330S Intelligent Power Switch (IPS) has 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% 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. AUIR3330S also features current sensing feedback, a diagnostic function, very low current consumption in sleep mode, and ESD protection.
The active di/dt control drastically reduces conducted EMI on the input supply without increasing switching losses, enabling a reduction in the size of the EMI filter and the heat sink for more efficient compact motor systems.
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.
Production orders are available immediately.
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