New current sensor family for automotive applications

Infineon Technologies AG has added the new XENSIV TLE4971 family to its current sensor portfolio for automotive applications. The 3.3V devices are the next generation offered in a TISON package with an integrated rail and supplied in four pre-programmed current ranges covering 25A, 50A, 75A and 120A. With a compact design and state-of-the-art sensing, the family is ideal for automotive use cases, including OBC, high-voltage auxiliary drives and charging applications. Also, the current sensor is also excellent for industrial applications, including DC chargers for electric vehicles, industrial drives, servo drives and PV inverters.

These devices provide precise magnetic current sensing based on proprietary temperature and stress compensation, with no negative effects of magnetic cores caused by hysteresis or saturation effects. Due to the differential sensing principle, no core or shielding is needed to protect against stray fields. Furthermore, the sensors are excellent for applications employing wide-bandgap solutions such as GaN and SiC. The integrated EEPROM enables users to customise the sensor’s OCD values and deglitch filters for different use cases.

The small PG-TISON-8-5 package provides a very compact design for multiple applications. With the minimum insertion resistance of 220µOhm and inductance lower than 1nH, the system losses decrease to allow higher efficiency and accuracy. Furthermore, the package allows high dynamic range, high surge current and market-leading thermal performance. The devices are fully qualified to AEC-Q100 Grade 1 for automotive applications up to 125C and provide improved output accuracy. All sensor variants are supplied as standard and UL-certified versions to support industrial applications.