Nano Power 3 Click

Nano Power 3 Click is a compact add-on board that steps down voltages from its input (supply) to output (load). This board features the RPL-3.0-R, a buck converter with an integrated inductor from Recom Power. This thermally-enhanced converter uses, as input, voltage from 4 up to 18VDC, thus allowing 5V and 12V supply rails to be used.

Click Product page

Click library

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

Software Support

We provide a library for the Nano Power 3 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 Nano Power 3 Click driver.

Standard key functions :

• nanopower3_cfg_setup Config Object Initialization function.

  void nanopower3_cfg_setup ( nanopower3_cfg_t *cfg );

• nanopower3_init Initialization function.

  err_t nanopower3_init ( nanopower3_t *ctx, nanopower3_cfg_t *cfg );

• nanopower3_default_cfg Click Default Configuration function.

  err_t nanopower3_default_cfg ( nanopower3_t *ctx );

Example key functions :

• nanopower3_set_ctr_pin Nano Power 3 set CTRL pin state function.

  void nanopower3_set_ctr_pin ( nanopower3_t *ctx, uint8_t pin_state );

• nanopower3_set_wiper_pos Nano Power 3 set wiper position function.

  err_t nanopower3_set_wiper_pos ( nanopower3_t *ctx, uint8_t wiper_pos );

• nanopower3_set_voltage Nano Power 3 set output voltage function.

  err_t nanopower3_set_voltage ( nanopower3_t *ctx, uint8_t out_vol );

Example Description

This library contains API for the Nano Power 3 Click driver. This driver provides the functions to set the output voltage treshold.

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 1 V.

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    nanopower3_cfg_t nanopower3_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.
    nanopower3_cfg_setup( &nanopower3_cfg );
    NANOPOWER3_MAP_MIKROBUS( nanopower3_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == nanopower3_init( &nanopower3, &nanopower3_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    if ( NANOPOWER3_ERROR == nanopower3_default_cfg ( &nanopower3 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }

    log_info( &logger, " Application Task " );
}

Application Task

This example demonstrates the use of the Nano Power 3 Click board™ by changing output voltage every 5 seconds starting from 1 V up to 4.5 V.

void application_task ( void ) 
{
    for ( uint8_t n_cnt = NANOPOWER3_1V_OUT_VOLTAGE; n_cnt <= NANOPOWER3_4V5_OUT_VOLTAGE; n_cnt++ )
    {
        nanopower3_set_voltage( &nanopower3, n_cnt );
        log_printf( &logger, " Selected output is:" );
        print_selected_output_level ( 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.NanoPower3

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.