Ultra-accurate and stable industrial current sensors from Infineon

     Infineon's new XENSIV TLI4971 is a coreless open-loop current sensor for accurate and stable current measurement in industrial applications. The sensor has a measurement range of ±25A to ±120A and provides great design flexibility with individually programmable parameters such as current range, overcurrent threshold, and output mode.

     The XENSIV TLI4971 sensor uses differential measurement principles to suppress interference fields from the surrounding environment. In addition, Infineon's market-proven technology compensates for temperature fluctuations and mechanical stresses. As a result, the measurement sensitivity error is as low as 2% at room temperature and can be reduced even lower by single-point in-system calibration. The measurement results can be provided as an analog output voltage.

     To quickly detect overflows with low latency, the sensor contains two digital outputs (OCD1 and OCD2). When the value exceeds a separately programmed overcurrent threshold, the signal can be used for early warning or system shutdown. In addition, the sensor can reliably identify and report when the power supply voltage is too high or undervoltage.

     With a special current rail layout, the TLI4971 sensor provides excellent thermal performance for up to 120A currents and integrates current isolation for voltages up to 1.1kV. With high performance data and 120kHz bandwidth, this compact sensor in an 8x8x1mm leadless TISON-8 package is suitable for a variety of applications, including 50kW power drives, inverters, robots, chargers, battery management systems, smart metering, power tools and white goods.