October 22, 2025 /SemiMedia/ — Infineon Technologies AG has expanded its XENSIV™ magnetic current sensor lineup with the launch of the TLE4971 and TLI4971 coreless current sensors, housed in a 300-mil package. Designed for high-efficiency, safe and reliable current measurement, the new devices target automotive and industrial power applications.

Accurate current sensing is vital for optimizing performance and energy efficiency in power electronic systems. Infineon’s latest sensors achieve a total error of only 0.7% across temperature and lifetime, setting a new benchmark in precision among magnetic coreless sensors. The 300-mil package enhances electrical isolation and reliability, making the devices ideal for power conversion and current monitoring in demanding environments.

The TLE4971 and TLI4971 are available in six factory-programmed current ranges (16 A, 20 A, 30 A, 35 A, 40 A, and 50 A), rounding out Infineon’s 3.3 V sensor portfolio. The established 300-mil housing, also used in the EiceDRIVER™ family, offers ultra-low resistance, reinforced or basic isolation, and 8 mm creepage and clearance for high-voltage systems.

Each sensor integrates a low-resistance (550 µΩ) current rail to minimize power loss and supports bi-directional AC/DC current measurement via an analog interface. Two fast over-current detection channels safeguard the power stage. The TLE4971 is designed for automotive systems such as on-board chargers and high-voltage auxiliary drives, while the TLI4971 suits industrial applications including photovoltaic inverters, energy storage systems and DC fast charging infrastructure, as well as general-purpose and servo drives.

Employing a differential sensing principle, these sensors eliminate hysteresis and saturation effects found in magnetic-core solutions, removing the need for shielding against stray fields. Proprietary temperature and stress compensation ensure exceptional stability, while fast over-current detection (OCD) enables compatibility with wide-bandgap technologies such as GaN and SiC. An integrated EEPROM allows users to fine-tune detection thresholds and de-glitch filters to match diverse application requirements.

With the TLE4971 and TLI4971, Infineon strengthens its position in precision sensing for next-generation power electronics, delivering higher efficiency, system protection and design flexibility for both automotive and industrial markets.

The XENSIV TLE4971/TLI4971 current sensor family is available now. For more information, please visit www.infineon.com/current-sensors.