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TLI4970-D025T4 Datasheet(PDF) 8 Page - Infineon Technologies AG |
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TLI4970-D025T4 Datasheet(HTML) 8 Page - Infineon Technologies AG |
8 / 29 page TLI4970-D025T4 Product Description Data Sheet 8 Rev. 1.0, 2015-07-02 1.3 General Information The TLI4970-D025T4 is a high-precision digital current sensor. The full scale measurement range is ±25 A. The sensor is based on Infineon's well-established and robust Hall technology. The measurement principle allows galvanic isolation (functional isolation) between the primary conductor and the secondary interface side. The coreless concept without a flux concentrator allows significant miniaturization. It shows no hysteresis effects and has enhanced linearity and over current capability compared to existing solutions. The differential measurement principle achieves best-in-class suppression of magnetic stray fields. The sensor is fully calibrated; no need for any additional calibration after PCB assembly is necessary. Thus, the overall implementation effort and costs are significantly reduced. It is a plug-and-play solution, easy to use in industrial and consumer applications. The accuracy of the TLI4970-D025T4 is comparable to closed-loop current measurement systems and even better than open-loop systems with magnetic core. But in comparison to the open- and closed-loop system the TLI4970- D025T4 enables a significantly smaller footprint and less power consumption. Infineon's patented stress compensation circuit provides outstanding long-term stability of the output signal. Proprietary dynamic offset cancellation techniques guarantee particularly low zero point error. Hereby, the TLI4970-D025T4 offers superior performance. The TLI4970-D025T4 is based on a digital concept. Thus, signal processing, compensation and calibration is already integrated. No further external measurements for compensation are needed. The sensor is provided in a small 7 mm x 7 mm SMD package. 1.4 Target Applications The TLI4970-D025T4 is suitable for AC as well as DC current measurement applications: • Current monitoring • Chargers • Photovoltaic & general purpose inverters • Power supplies (SMPS) • Electrical drive •etc. With its implemented magnetic interference suppression, it is extremely robust when exposed to external magnetic fields. It is also suitable for fast over current detection with a configurable threshold level. This allows the control unit to switch off and protect the affected system from damage, independently of the main measurement path. |
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