Step Down 6 Click

Step Down 6 Click is a compact add-on board that converts higher voltages into lower ones. This board features the MPM54304, a quad-output power module from Monolithic Power Systems (MPS). It is a quad-output, DC/DC step-down power module with up to 3A per output on channels 1 and 2 and up to 2A per channels 3 and 4, providing continuous current on all four channels.

Click Product page

Click library

• Author : Stefan Ilic
• Date : May 2023.
• Type : I2C type

Software Support

We provide a library for the Step Down 6 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 Step Down 6 Click driver.

Standard key functions :

• stepdown6_cfg_setup Config Object Initialization function.

  void stepdown6_cfg_setup ( stepdown6_cfg_t *cfg );

• stepdown6_init Initialization function.

  err_t stepdown6_init ( stepdown6_t *ctx, stepdown6_cfg_t *cfg );

• stepdown6_default_cfg Click Default Configuration function.

  err_t stepdown6_default_cfg ( stepdown6_t *ctx );

Example key functions :

• stepdown6_set_en_pin Step Down 6 set EN pin state function.

  void stepdown6_set_en_pin ( stepdown6_t *ctx, uint8_t pin_state );

• stepdown6_write_reg Step Down 6 Register writing function.

  err_t stepdown6_write_reg ( stepdown6_t *ctx, uint8_t reg, uint8_t data_in );

• stepdown6_set_out_voltage Step Down 6 Set output voltage function.

  err_t stepdown6_set_out_voltage ( stepdown6_t *ctx, uint8_t out_sel, uint16_t out_val );

Example Description

This library contains API for the Step Down 6 Click driver. This driver provides the functions to set the output voltage threshold.

The demo application is composed of two sections :

Application Init

Initialization of I2C module and log UART. After driver initialization, default settings sets output voltage to 550 mV.

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    stepdown6_cfg_t stepdown6_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.
    stepdown6_cfg_setup( &stepdown6_cfg );
    STEPDOWN6_MAP_MIKROBUS( stepdown6_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == stepdown6_init( &stepdown6, &stepdown6_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    if ( STEPDOWN6_ERROR == stepdown6_default_cfg ( &stepdown6 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }
    log_info( &logger, " Application Task " );
}

Application Task

This example demonstrates the use of the Step Down 6 Click board™ by changing output voltage every 5 seconds starting from 550 mV up to 1820 mV.

void application_task ( void ) 
{
    err_t error_flag = STEPDOWN6_OK;
    for ( uint16_t n_cnt = STEPDOWN6_MIN_VOUT_VAL; n_cnt <= STEPDOWN6_MAX_VOUT_VAL; n_cnt += STEPDOWN6_INCREMENT_VOUT_VAL )
    {
        error_flag |= stepdown6_set_out_voltage( &stepdown6, STEPDOWN6_SELECT_VOUT1, n_cnt );
        error_flag |= stepdown6_set_out_voltage( &stepdown6, STEPDOWN6_SELECT_VOUT2, n_cnt );
        error_flag |= stepdown6_set_out_voltage( &stepdown6, STEPDOWN6_SELECT_VOUT3, n_cnt );
        error_flag |= stepdown6_set_out_voltage( &stepdown6, STEPDOWN6_SELECT_VOUT4, n_cnt );
        log_printf( &logger, "  Set voltage : %d mV \r\n", n_cnt );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
        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.StepDown6

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.