Magnetic Current Sensors
Tech Notes
The CUR 4000 is a single-axis contactless magnetic-field sensor for galvanically isolated DC and AC current measurements.
In electric vehicles (xEVs), thermal management plays a crucial role for battery safety and longevity, inverter and motor monitoring, and comfort also. For this purpose, TDK offers a broad variety of innovative NTC and PTC based temperature sensors solutions, optimized by their design and specification for the respective applications. However, advanced Micronas Hall sensors and motor controllers also perform important tasks, for example in the high-precision control of valves.
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The CUR 4000 sensor was developed according to ISO26262 (ASIL B ready) for current measurements in automotive and industrial applications such as high-voltage battery monitoring systems of hybrid and electric vehicles (xEV). A flexible Multi-Hall-Array allows linear or differential magnetic-field sensing for contactless and precise current sensing up to ≥2000 A. CUR 4000 can be used for different module concepts like core-based or coreless. In the linear modes of CUR 4000, a configurable array of Hall elements enables highly accurate measurements for core-based stray-field robust sensor-module designs. The differential mode enables small coreless and stray-field robust system designs without shields.
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