Boost converter helps reduce fuel consumption by 15%

International Rectifier announces the automotive-qualified AUIR3240S battery power switch for the combustion engine shut-off and restart function (Stop-Start system), which can help reduce fuel consumption in automotive vehicles by as much as 15%.

The AUIR3240S is a highly integrated boost converter designed specifically for the Stop-Start system that halts the engine when a vehicle is stopped in traffic. The system requires a board net stabilizer using a power switch that disconnects the starter and main battery from the auxiliary electrical systems during engine start. The AUIR3240S is capable of driving several MOSFETs in parallel to achieve very low on-state resistance with current consumption below 50µA. The new device provides 15 V on the output with a wide input voltage of 4 to 36 V. The AUIR3240S also features diagnostics on the output current and a thermal sensor interface for very robust designs.

The AUIR3240S is qualified according to AEC-Q100 standards and features an environmentally friendly, lead-free, and RoHS-compliant bill of materials.

For more information, contact International Rectifier, 233 Kansas St., El Segundo, CA 90245. Phone: (310) 252-7105.