Mikroelektronika d.o.o.
Aktuelles 6 Click Board
Aktuelles 6 Click Board
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Das Current 6 Click Board™ ist eine kompakte Zusatzplatine, die eine präzise und genaue Stromerfassungslösung bietet. Diese Platine verfügt über den MAX40080, einen bidirektionalen Stromerfassungsverstärker mit schneller Reaktion von Analog Devices. Das Gerät verfügt über eine extrem niedrige Eingangsoffsetspannung von 5 uV, einen sehr niedrigen Verstärkungsfehler von 0,2 % und umfasst einen Analog-Digital-Wandler mit programmierbarer Abtastrate und 12-Bit-Auflösung mit I2C-kompatibler Schnittstelle. Es verfügt außerdem über einen Aktivierungsstromschwellenwert und einen automatischen Abschaltmodus, wenn I2C inaktiv ist, beides zur Minimierung des Stromverbrauchs. Der Stromshunt-Monitor kann Spannungssignale bei Gleichtaktspannungen von -0,1 V (Masseerfassung) bis 36 V messen, unabhängig von der Versorgungsspannung. Dieses Click Board™ bietet höhere Leistung für industrielle Steuerungs- und Automatisierungsanwendungen, Last- und Stromversorgungsüberwachung, Telekommunikationsgeräte und vieles mehr.
Das Current 6 Click Board™ wird von einer mikroSDK-kompatiblen Bibliothek unterstützt, die Funktionen enthält, die die Softwareentwicklung vereinfachen. Dieses Click Board™ wird als vollständig getestetes Produkt geliefert und ist bereit für den Einsatz auf einem System, das mit der mikroBUS™-Buchse ausgestattet ist.
How Does The Current 6 Click Board™ Work?
The Current 6 Click Board™ is based on the MAX40080, a high-precision, fast sample-rate digital current-sense amplifier from Analog Devices. The MAX40080 measures current and common-mode voltage ranging from -0.1V to 36V and converts the data into digital form through an I2C-compatible two-wire serial interface allowing access to conversion results. Also, setting the input voltage sense using the I2C register, ±50mV or ±10mV, will allow one to select two measuring ranges from 0A to 1A or from 0A to 5A.
The Current 6 Click Board™ communicates with MCU using the standard I2C 2-Wire interface for configuring and checking the device's status. Standard I2C commands allow reading the data and configuring other operating characteristics. While reading the current/voltage registers, any measured current and voltage changes are ignored until the read is completed. The current/voltage register is updated for the new measurement upon completion of the read operation.
The MAX40080 has a unique I2C slave address selection method based on a single R4 resistor. By selecting the resistors of precisely defined resistances from Table 1, it is possible to choose 32 different slave addresses corresponding to 32 different resistor values in the attached datasheet. The default value of the R4 resistor is 100kΩ which corresponds to slave address of 0x01. In addition, it also features a wake-up current-threshold and auto-shutdown mode when the I2C interface is inactive, both designed to minimize power consumption.
Since the sensor for operation requires a 1.8V logic voltage level to work correctly, a small regulating LDO is used, the ADP151 from Analog Devices, providing a 1.8V out of mikroBUS™ rails. This LDO uses the Enable pin labelled as EN and routed to the CS pin of the mikroBUS™ socket to optimize power consumption, used for its power ON/OFF purposes. That's why the LTC4301L voltage-level translator is also featured. The I2C interface bus lines are routed to the voltage-level translator, allowing this Click board™ to work with both 3.3V and 5V MCUs properly. It also possesses an additional interrupt signal, routed on the INT pin of the mikroBUS™ socket labelled as INT, indicating when a specific interrupt event occurs such as overcurrent/voltage, under voltage, FIFO full/overflow, wake-up current threshold reached, and more.
The Current 6 Click Board™ can operate with both 3.3V and 5V logic voltage levels selected via the VIO 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 | Measurements |
| Applications | The Current 6 Click Board™ can be used for industrial control and automation applications, load and power supplies monitoring, telecom equipment, and many more |
| On-board modules | MAX40080 - high-precision, fast sample-rate digital current-sense amplifier from Analog Devices |
| Key Features | Wide input common-mode range up to 36V, I2C interface with smart modes, low power consumption, bi-directional current sensing, alert interrupt, and more |
| Interface | I2C |
| Compatibility | mikroBUS |
| Click board size | M (42.9 x 25.4 mm) |
| Input Voltage | 3.3V or 5V,External |
PINOUT DIAGRAM
This table shows how the pinout of Current 6 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).
| Notes | Pin |  |
Pin | Notes | |||
|---|---|---|---|---|---|---|---|
| NC | 1 | AN | PWM | 16 | NC | ||
| NC | 2 | RST | INT | 15 | ALR | Interrupt | |
| Enable | EN | 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 | VIO SEL | Left | Logic Level Voltage Selection 3V3/5V: Left position 3V3, Right position 5V |
| R4 | R4 | Populated | I2C Address Selection Resistor |
CURRENT 6 CLICK ELECTRICAL SPECIFICATIONS
| Description | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VIO) | 3.3 | - | 5 | V |
| Common-Mode Input Voltage (VIN) | 0 | - | 36 | V |
| Current Sense Range | 0 | - | 5 | A |
| Resolution | - | 12 | - | bits |
| Operating Temperature Range | -40 | +25 | +120 | °C |
Software Support
We provide a library for the Current 6 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 Current 6 Click Board™ driver.
Key functions
-
current6_get_alert_pinThis function returns the alert pin logic state. -
current6_read_dataThis function reads the input voltage and current measurement values. -
current6_get_statusThis function reads and clears the status register.
Example Description
This example demonstrates the use of the Current 6 Click Board™ by reading the input voltage and current measurements.
void application_task ( void )
{
if ( current6_get_alert_pin ( ¤t6 ) )
{
uint16_t status;
if ( CURRENT6_OK == current6_get_status ( ¤t6, &status ) )
{
if ( status & CURRENT6_FIFO_CFG_DATA_OVERFLOW_MASK )
{
float voltage, current;
if ( CURRENT6_OK == current6_read_data ( ¤t6, &voltage, ¤t ) )
{
log_printf( &logger, " Voltage: %.3f Vrn Current: %.3f Arnn", voltage, current );
}
}
}
}
}
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.Current6
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 Current 6 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.
Aktuelles 6 Click Board
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