Infineon TLI4970-D050T4 CurrentSense Shield2Go User manual

TLI4970-D050T4
CurrentSense Shield2Go
Quick Start
V1.0.0

Introduction
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.
Link to Datasheet and Product Page
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).
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2018-07-17 Copyright © Infineon Technologies AG 2018. All rights reserved.

Evaluation Board Notes
Information
•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
Head
Breakable
Link to Board Page
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2018-07-17 Copyright © Infineon Technologies AG 2018. All rights reserved.

Evaluation Board PCB Details
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Evaluation Board Schematic
Green area: circuit if head is
broken off
100n
C1GND
PWR_3V3
12
D1
powered
notpowered
PowerStatusIndication
GND
PWR_3V3
680R
R3
SCLK4
IP_N
8
DOUT3
CS_N5
OCD6
IP_P
7VDD2
GND1
TLI4970-D050T4
B1
DOUT
OCD
PWR_3V3
GND
47k/50V/1%
R1
100k/75V/1%
R2
21
D2
220R/75V/1%
R5
1k/75V/1%
R4
GND
CurrentSensor
CS__
__
SCK
IP+
IP-
PIN_11
SolderJumper2Pins
12
X1
PRG
SPI_MISO
SPI_CS
SPI_SCLK
INT/GPIO3
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2018-07-17 Copyright © Infineon Technologies AG 2018. All rights reserved.

Arduino: The Arduino IDE
Arduino is a hardware-software prototyping
environment IDE developed by arduino.cc:
•Installation Details for Windows:
Click here
•Installation Details for Linux:
Click here
•Installation Details for Mac OS:
Click here
•Installation Details for Portable IDE:
Click here
Arduino IDE
Arduino Quick Start
•What is Arduino? Click here
•Extended information about the Arduino environment. Click here
•How to import libraries? Click here
•How to install additional boards? Click here
•Problems related to Arduino? Click here for troubleshooting
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2018-07-17 Copyright © Infineon Technologies AG 2018. All rights reserved.

How to download the library for Arduino - 1
https://github.com/Infineon/TLI4970-D050T4-Current-Sensor
Notes
•Open the Arduino IDE
•Navigate to
Sketch –Include Library –
Manage Libraries
•The Arduino library manager
will be opened (see next slide
for further instructions)
•Additional notes for
installation can be found in
the GitHub , e.g. if the library
manager is not used
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2018-07-17 Copyright © Infineon Technologies AG 2018. All rights reserved.

How to download the library for Arduino - 2
Notes
•The Arduino library manager is a comprehensive tool to install external libraries
for Arduino
•Search for TLI4970-D050T4 in the Filter your seach… field
•Select as Type: All and Topic: All when searching for TLI4970-D050T4
•As shown in the picture, please choose the respective library and install it
•Regularly check your installed libraries for updates
•In case of problems, please visit also our GitHub repository and open an issue
to get further help
https://github.com/Infineon/TLI4970-D050T4-Current-Sensor
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2018-07-17 Copyright © Infineon Technologies AG 2018. All rights reserved.

Example with XMC 2Go
Notes
•The Shield2Go form factor of the Shield2Go
evaluation board is directly compatible with the
XMC 2Go board
•Stack the TLI4970-D050T4 CurrentSense
Shield2Go board on top of the XMC 2Go 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
https://github.com/Infineon/XMC-for-Arduino
https://github.com/Infineon/TLI4970-D050T4-Current-Sensor
Steps
•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>);)
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2018-07-17 Copyright © Infineon Technologies AG 2018. All rights reserved.

Important Warning
Important Warning
•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 CurrentSense
Shield2Go board directly.
•Even if the power is connected to the
3.3 V pin, the interface lines, e.g.
MISO, will still be driven by 5 V
•Please use appropriate level shifting
for these boards
Not
possible
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2018-07-17 Copyright © Infineon Technologies AG 2018. All rights reserved.