Buck-Boost 4 Click

Buck-Boost 4 Click is a compact add-on board that contains a buck-boost DC/DC converter with four integrated MOSFETs. This board features the TPS55289, a buck-boost converter from Texas Instruments. It can deliver on its output voltages from 0.8 up to 22V, from the input voltage in a range of 3 up to 30V. The output voltage can be programmed in 10mV steps.

Click Product page

Click library

• Author : Nenad Filipovic
• Date : Sep 2023.
• Type : I2C type

Software Support

We provide a library for the Buck-Boost 4 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 Buck-Boost 4 Click driver.

Standard key functions :

• buckboost4_cfg_setup Config Object Initialization function.

  void buckboost4_cfg_setup ( buckboost4_cfg_t *cfg );

• buckboost4_init Initialization function.

  err_t buckboost4_init ( buckboost4_t *ctx, buckboost4_cfg_t *cfg );

• buckboost4_default_cfg Click Default Configuration function.

  err_t buckboost4_default_cfg ( buckboost4_t *ctx );

Example key functions :

• buckboost4_set_vout Buck-Boost 4 set the output voltage function.

  err_t buckboost4_set_vout ( buckboost4_t *ctx, float vout_v );

• buckboost4_set_vref Buck-Boost 4 set internal reference voltage function.

  err_t buckboost4_set_vref ( buckboost4_t *ctx, float vref_mv );

• buckboost4_fault_indicator Buck-Boost 4 check fault indicator function.

  uint8_t buckboost4_fault_indicator ( buckboost4_t *ctx );

Example Description

This example demonstrates the use of the Buck-Boost 4 Click board™. This driver provides functions for device configurations and for the output voltage setting.

The demo application is composed of two sections :

Application Init

Initialization of I2C module and log UART. After driver initialization, the app executes a default configuration.

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    buckboost4_cfg_t buckboost4_cfg;  /**< Click config object. */

    /** 
     * Logger initialization.
     * Default baud rate: 115200
     * Default log level: LOG_LEVEL_DEBUG
     * @note If USB_UART_RX and USB_UART_TX 
     * are defined as HAL_PIN_NC, you will 
     * need to define them manually for log to work. 
     * See @b LOG_MAP_USB_UART macro definition for detailed explanation.
     */
    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, " Application Init " );

    // Click initialization.
    buckboost4_cfg_setup( &buckboost4_cfg );
    BUCKBOOST4_MAP_MIKROBUS( buckboost4_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == buckboost4_init( &buckboost4, &buckboost4_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    if ( BUCKBOOST4_ERROR == buckboost4_default_cfg ( &buckboost4 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }

    log_info( &logger, " Application Task " );
    log_printf( &logger, "____________\r\n" );
    Delay_ms ( 100 );
}

Application Task

The demo application sets the desired output voltage by cycling through a couple of voltage values. Results are sent to the UART Terminal, where you can track their changes.

void application_task ( void ) 
{
    for ( uint8_t vout = 1; vout < 21; vout++ )
    {
        if ( BUCKBOOST4_OK == buckboost4_set_vout( &buckboost4, ( float ) vout ) )
        {
            log_printf( &logger, " Vout: %dV\r\n", ( uint16_t ) vout );
            Delay_ms ( 1000 );
            Delay_ms ( 1000 );
            Delay_ms ( 1000 );
            Delay_ms ( 1000 );
            Delay_ms ( 1000 );
        }
    }
    log_printf( &logger, "____________\r\n" );
    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.BuckBoost4

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.