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The TLI4970-D050T4 is a highly accurate coreless magnetic current sensor. Thus, the output signal is highly linear and without hysteresis. However, a differential measurement principle allows effective stray field suppression. Due to the integrated primary conductor (current rail), there is no need for external calibration. Additionally, a separate interface pin (OCD) provides a fast output signal in case a current exceeds a pre-set threshold. A small leadless package (QFN-like) allows for standard SMD assembly.
Key features are a AC & DC measurement range up to ±50 A, highly accurate over temperature range and lifetime of max. 1.0 % (0 h), 1.6 % (over lifetime) of indicated value, low offset error (max. 25 mA at room temperature) and a high magnetic stray field suppression. Additionally, the sensor has fast over current detection with configurable threshold and a galvanic isolation up to 2.5 kV max. rated isolation voltage. The sensor has a 16 bit digital SPI output (13 bit current value).
- Link to Datasheet
- Link to Product Page
- Supply voltage is max. 3.6 V, please refer to the TLI4970-D050T4 datasheet for more details about maximum ratings
- Pin out on top (head) is directly connected to the pins of the TLI4970-D050T4 sensor
- If head is broken off, only one capacitor is connected to the TLI4970-D050T4 sensor
- Software compatible with Arduino and library fully integrated into the Arduino IDE
- Sales Name S2GO_CUR-SENSE_TLI4970 and OPN S2GOCURSENSETLI4970TOBO1
Ensure that no voltage applied to any of the pins exceeds the absolute maximum rating of 3.6 V
The Shield2Go form factor of the Shield2Go evaluation board is directly compatible with the XMC2Go board
- Stack theTLI4970 CurrentSense Shield2Go board on top of the XMC2Go as shown in the picture
- The additional pin on the left-top side (designated with NC) is left floating
- Using the XMC-for-Arduino Arduino integration, the Arduino library for the TLI4970-D050T4 can be directly used
Open one of the examples for the TLI4970-D050T4 from File – Examples and select as board XMC1100 XMC2Go. Connect the stacked boards to the PC and press the Upload button. Select the related COM port from Tools – Port and open the serial monitor with the set baud rate (see sketch/code with Serial.begin(<BAUDRATE>);)
The TLI4970-D050T4 has a maximum rating of 3.6 V on any pin. Third party boards with 5 V logic, e.g. the Arduino Uno, cannot be connected to the TLI4970-D050T4 CurrentSense Shield2Go board directly. Even if the power is connected to the 3.3 V pin, the interface lines, e.g. CS or MISO, will still be driven by 5 V.
Please use appropriate level shifting for these boards.
