Brushless 20 Click

How does it work?

Brushless 20 Click as its foundation uses the DRV8313, a fully integrated three-phase BLDC motor driver from Texas Instruments. The highly integrated DRV8313 comes with PWM/enable control interface, wide voltage operating range, an integrated 10mA LDO, and robust on-chip protection features. Low RDSON and efficient switching algorithms ensure excellent thermal performance and high drive capability. This Click board™ offers an energy-saving solution and quiet motor operation for brushless DC (BLDC) motors used in various applications.

Each output driver channel consists of N-channel power MOSFETs configured in a 1/2-H-bridge configuration. Control pins can be accessed through the I2C interface and the PCA9538A port expander, with which the states of those pins, alongside the state of the output terminals, can be directly controlled. The PCA9538A also allows choosing the least significant bit (LSB) of its I2C slave address by positioning SMD jumpers labeled as ADDR SEL to an appropriate position marked as 0 and 1, alongside its interrupt and Reset features routed to the INT and RST pins of the mikroBUS™ socket.

The DRV8313 is active unless the SLP pin, routed to the CS pin of the mikroBUS™ socket, is brought to a low logic state. The charge pump and output FETs are disabled in sleep mode, alongside the internal LDO regulator. The DRV313 is automatically brought out of sleep mode if SLP is brought to a logic high state. This board also supports an external power supply for the motor, which can be connected to the input terminal labeled as VM and should be within the range of 8V to 60V, while the BLDC motor coils can be connected to the terminals labeled as 1, 2, and 3.

This 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

Pinout diagram

This table shows how the pinout on Brushless 20 Click 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
Reset	RST	2	RST	INT	15	INT	Interrupt
Sleep Mode	SLP	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

Brushless 20 Click electrical specifications

Software Support

We provide a library for the Brushless 20 Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Package can be downloaded/installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for Brushless 20 Click driver.

Key functions

• brushless20_perform_com_sequence This function performs a single commutation sequence for the selected rotation direction at a desired speed.

• brushless20_drive_motor This function drives the motor for a desired time by performing multiple commutation sequences for the selected rotation direction at a desired speed.

• brushless20_get_fault_pin This function returns the fault pin logic state.

Example Description

This example demonstrates the use of the Brushless 20 Click board™ by driving the motor in both directions at different speeds.

void application_task ( void ) 
 { 
     log_printf ( &logger, "rn Driving motor clockwise rn" ); 
     for ( uint8_t speed = BRUSHLESS20_SPEED_MIN; speed <= BRUSHLESS20_SPEED_MAX; speed += 20 ) 
     { 
         log_printf ( &logger, " Speed: %urn", ( uint16_t ) speed ); 
         if ( BRUSHLESS20_OK != brushless20_drive_motor ( &brushless20, BRUSHLESS20_DIR_CW, speed, 3000 ) ) 
         { 
             log_error ( &logger, " Drive motor " ); 
         } 
     } 
     Delay_ms ( 1000 ); 
     log_printf ( &logger, "rn Driving motor counter-clockwise rn" ); 
     for ( uint8_t speed = BRUSHLESS20_SPEED_MIN; speed <= BRUSHLESS20_SPEED_MAX; speed += 20 ) 
     { 
         log_printf ( &logger, " Speed: %urn", ( uint16_t ) speed ); 
         if ( BRUSHLESS20_OK != brushless20_drive_motor ( &brushless20, BRUSHLESS20_DIR_CCW, speed, 3000 ) ) 
         { 
             log_error ( &logger, " Drive motor " ); 
         } 
     } 
     Delay_ms ( 1000 ); 
 }

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Other Mikroe Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.Brushless20

Additional notes and informations

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

This 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.

For more information about mikroSDK, visit the official page.