Infineon introduces the XENSIV TLE4972, a high-precision coreless current sensor for automotive applications

     Infineon Technologies AG presents the first automotive current sensor, the new XENSIV TLE4972. This coreless current sensor uses Infineon's proven Hall technology for accurate and stable current measurement. With its compact design and diagnostic modes, the TLE4972 is ideal for xEV applications such as traction inverters for hybrid and battery-powered vehicles, as well as battery main switches.

     Based on its unique temperature and stress compensation features, the TLE4972 provides state-of-the-art sensing technology and is immune to the negative effects caused by the magnetic core. Due to its differential sensing structure, no magnetic core or shielding is required to protect the sensor from stray fields. The integrated EEPROM allows the sensor to be customized for different applications, supporting measurement ranges up to 2 kA.

     To protect the system, the sensor has two independent output pins for overcurrent detection with a typical response time of less than 1µs. Sensitivity and overcurrent limits can be programmed by the customer to adapt the sensor to system requirements. In addition, the temperature drift of sensitivity plus offset is less than 1.6%.

     Due to the magnetic induction principle, the power loss caused by the sensor is very low. Therefore, it can be used as a versatile redundant solution for 400V or 800V battery main switch. The small PG-VSON-6 package enables a compact design making the device ideal for traction inverters, and a PG-TDSO-16 package is also available. Both packaged devices are developed according to ISO 26262 as a Safety Element out of Context and meet ASIL B safety requirements.