Mikroelektronika d.o.o.
Hall Current 13 Click Board
Hall Current 13 Click Board
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The Hall Current 13 Click Board™ is a compact add-on board that provides economical and precise AC or DC current sensing solutions. This board features the TMCS1107-Q1, a galvanically isolated Hall-effect current sensor capable of DC or AC current measurement with high accuracy, excellent linearity, and temperature stability from Texas Instruments. It enables the lowest drift, <3% full-scale error, and highest accuracy over time and temperature. It also provides a reliable 420V lifetime working voltage and 3kVRMS isolation between the current path and circuitry with uni/bidirectional current sensing. Besides, the user is allowed to process the output signal in analog or digital form. This Click board™ is suitable for AC or DC current-sensing in industrial and commercial systems, motor and load control, power factor correction, overcurrent protection, and many more.
The Hall Current 13 Click Board™ is supported by a mikroSDK compliant library, which includes functions that simplify software development. This Click board™ comes as a fully tested product, ready to be used on a system equipped with the mikroBUS™ socket.
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DO NOT TOUCH THE BOARD WHILE THE EXTERNAL POWER SUPPLY IS ON!
Note: This Click board™ needs to be used by trained personnel only while applying high voltages. Special care should be taken when working with hazardous voltage levels.
How Does The Hall Current 13 Click Board™ Work?
The Hall Current 13 Click Board™ as its foundation uses the TMCS1107-Q1, a precise Hall-effect current sensor, featuring a 420V isolation working voltage, <3% full-scale error across temperature, and device options providing both unidirectional and bidirectional current sensing from Texas Instruments. The input current flows through an internal 1.8mΩ conductor that generates a magnetic field measured by an integrated Hall-effect sensor and amplified by a precision signal chain. The device has a bandwidth of 80kHz and can be used for AC and DC current measurements. It is optimized for high accuracy and temperature stability, with offset and sensitivity compensated across the operating temperature range.
The Hall Current 13 Click Board™ possesses two ways to communicate with the MCU. The analog output signal of the TMCS1107-Q1 can be converted to a digital value using MCP3221, a successive approximation A/D converter with a 12-bit resolution from Microchip using a 2-wire I2C compatible interface, or can be sent directly to an analog pin of the mikroBUS™ socket labelled as AN. Selection can be performed by onboard SMD switch labelled as VOUT SEL, setting it to an appropriate position marked as AN and ADC.
The MCP3221 provides one single-ended input with low power consumption, a low maximum conversion current, and a Standby current of 250μA and 1μA, respectively. Data can be transferred at rates of up to 100kbit/s in the Standard and 400kbit/s in the Fast Mode. Also, maximum sample rates of 22.3kSPS with the MCP3221 are possible in a Continuous-Conversion Mode with a clock rate of 400kHz.
Also, this Click board™ should be connected in series with the load. The current is measured by two onboard terminal connectors, one terminal block for the positive and the other for the negative current input.
The Hall Current 13 Click Board™ can operate with both 3.3V and 5V logic voltage levels selected via the VCC SEL jumper. This way, it is allowed for both 3.3V and 5V capable MCUs to use the communication lines properly. However, the Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used, as a reference, for further development.
SPECIFICATIONS
Type | Current sensor |
Applications | The Hall Current 13 Click Board™ be used for AC or DC current-sensing in industrial and commercial systems, motor and load control, power factor correction, overcurrent protection, and many more |
On-board modules | TMCS1107-Q1 - galvanically isolated Hall-effect current sensor capable of DC or AC current measurement with high accuracy, excellent linearity, and temperature stability from Texas Instruments |
Key Features | High accuracy and precision, excellent linearity, and temperature stability, 3kVRMS isolation rating, robust 420V lifetime working voltage, bidirectional and unidirectional current sensing, and more |
Interface | Analog,I2C |
Compatibility | mikroBUS |
Click board size | L (57.15 x 25.4 mm) |
Input Voltage | 3.3V or 5V |
PINOUT DIAGRAM
This table shows how the pinout of the Hall Current 13 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).
Notes | Pin | ![]() |
Pin | Notes | |||
---|---|---|---|---|---|---|---|
Analog Signal | AN | 1 | AN | PWM | 16 | NC | |
NC | 2 | RST | INT | 15 | NC | ||
NC | 3 | CS | RX | 14 | NC | ||
NC | 4 | SCK | TX | 13 | NC | ||
NC | 5 | MISO | SCL | 12 | SCL | I2C Clock | |
NC | 6 | MOSI | SDA | 11 | SDA | I2C Data | |
Power Supply | 3.3V | 7 | 3.3V | 5V | 10 | 5V | Power Supply |
Ground | GND | 8 | GND | GND | 9 | GND | Ground |
ONBOARD SETTINGS AND INDICATORS
Label | Name | Default | Description |
---|---|---|---|
LD1 | PWR | - | Power LED Indicator |
JP1 | VCC SEL | Left | Logic Level Voltage Selection 3V3/5V: Left position 3V3, Right position 5V |
SW1 | VOUT SEL | Right | Output Voltage A/D Selection AN/ADC: Left position AN, Right position ADC |
HALL CURRENT 13 CLICK ELECTRICAL SPECIFICATIONS
Description | Min | Typ | Max | Unit |
---|---|---|---|---|
Supply Voltage | 3.8 | - | 5 | V |
Measurement Range @ VCC=3.3V | -2.8 | - | 27.7 | A |
Measurement Range @ VCC=5V | -4.5 | - | 43 | A |
Sensitivity | - | 100 | - | mV/A |
Operating Temperature Range | -40 | +25 | +120 | °C |
Software Support
We provide a library for the Hall Current 13 Click Board™ as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.
The package can be downloaded/installed directly from NECTO Studio The package Manager (recommended), downloaded from our LibStock™ or found on MikroE Github account.
Library Description
This library contains API for the Hall Current 13 Click Board™ driver.
Key functions
-
hallcurrent13_read_current
This function reads the input current level [A] based on HALLCURRENT13_NUM_CONVERSIONS of voltage measurements. -
hallcurrent13_read_voltage
This function reads raw ADC value and converts it to proportional voltage level. -
hallcurrent13_set_vref
This function sets the voltage reference for Hall Current 13 click driver.
Example Description
This example demonstrates the use of the Hall Current 13 Click Board™ by reading and displaying the input current measurements.
void application_task ( void )
{
float current = 0;
if ( HALLCURRENT13_OK == hallcurrent13_read_current ( &hallcurrent13, ¤t ) )
{
log_printf( &logger, " Current : %.3f[A]rnn", current );
Delay_ms( 1000 );
}
}
The full application code, and ready to use projects can be installed directly from NECTO Studio The package Manager (recommended), downloaded from our LibStock™ or found on MikroE Github account.
Other MikroE Libraries used in the example:
- MikroSDK.Board
- MikroSDK.Log
- Click.HallCurrent13
Additional Notes and Information
Depending on the development board you are using, you may need USB UART click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. UART terminal is available in all MikroElektronika compilers.
MIKROSDK
The Hall Current 13 Click Board™ is supported with mikroSDK - MikroElektronika Software Development Kit. To ensure proper operation of mikroSDK compliant Click board™ demo applications, mikroSDK should be downloaded from the LibStock and installed for the compiler you are using.
Hall Current 13 Click Board
Frequently Asked Questions
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