Ultra-precise and stable industrial current sensor now available

12-02-2020 | Rutronik | Test & Measurement

Infineon’s new XENSIV TLI4971 is a coreless open loop current sensor providing accurate and stable measurements in industrial applications. The sensor includes measurement ranges from ±25A to ±120A and provides great design flexibility due to individually programmable parameters including current range, overcurrent threshold and output mode.

With its differential measuring principle, the sensor suppresses interference fields from its surrounding environment. Also, a market-proven Infineon technology compensates temperature fluctuations and mechanical stress. Therefore, the sensitivity error of the measurement is decreased to only 2% at room temperature, with single point in-system calibration to even lower values. The results of the measurement are presented as an analog output voltage.

For fast overcurrent detection with low latency, the sensor contains two digital outputs (OCD1, OCD2). When the individually programmable over-current threshold is exceeded, the signal can be used for pre-warning or system shutdown. Also, the sensor reliably identifies and reports over- or under-voltage condition for the supply voltage.

The device offers excellent thermal performance for currents up to 120A thanks to its special current rail layout and incorporates galvanic isolation for voltages up to 1.1kV. With its performance data and the 120kHz bandwidth, the compact sensor in an 8mm x 8mm x 1mm leadless TISON-8 package is excellent for an extensive range of applications, including 50kW electric drives, inverters, robots, chargers, battery management systems, smart metering, power tools and white goods.

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