Boost-INV Click

Boost-INV Click is a very useful DC/DC voltage converter device, as can output both positive and negative voltage, boosted up to 12.78V and -13.95, from a single fixed voltage input.

Click Product page

Click library

• Author : Luka FIlipovic
• Date : Nov 2019.
• Type : I2C type

Software Support

We provide a library for the BoostInv 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 form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.

Library Description

This library contains API for BoostInv Click driver.

Standard key functions :

• Config Object Initialization function.

  void boostinv_cfg_setup ( boostinv_cfg_t *cfg );

• Initialization function.

  BOOSTINV_RETVAL boostinv_init ( boostinv_t ctx, boostinv_cfg_t cfg );

• Click Default Configuration function.

  void boostinv_default_cfg ( boostinv_t *ctx );

Example key functions :

• Functions for enable chip.

  void boostinv_enable ( boostinv_t *ctx );

• Functions for set positive output voltage

  void boostinv_set_positive_voltage ( boostinv_t *ctx, uint16_t voltage );

• Functions for set negative output voltage

  void boostinv_set_negative_voltage ( boostinv_t *ctx, int16_t voltage );

Examples Description

Changes the positive and negative output voltage. Input Voltage 3.3V. Positive output voltage goes from 3200mV, 7750mV, 12000mV and 7750mV. Negative output voltage goes from -1450mV, -6700mV, -11050mV and -6700mV.

The demo application is composed of two sections :

Application Init

Initializes I2C module and sets EN ( RST ) pin as output.

void application_init ( void )
{
    log_cfg_t log_cfg;
    boostinv_cfg_t cfg;

    /** 
     * 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.

    boostinv_cfg_setup( &cfg );
    BOOSTINV_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    boostinv_init( &boostinv, &cfg );

    boostinv_default_cfg ( &boostinv );
    log_printf( &logger, "     Boost INV Click\r\n" );
    log_printf( &logger, "-------------------------\r\n" );
    Delay_ms ( 100 );
}

Application Task

Changes the positive and negative output voltage every 5 sec.

void application_task ( void )
{
    //  Task implementation.

    // Sets Positive output voltage

    log_printf( &logger, " Positive output voltage \r\n" );
    log_printf( &logger, "- - - - - - - - - - - - -\r\n" );
    log_printf( &logger, "          3200 mV\r\n" );
    log_printf( &logger, "-------------------------\r\n" );
    boostinv_set_positive_voltage( &boostinv, BOOSTINV_VOLTAGE_POSITIVE_3200_mV );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );

    log_printf( &logger, "          7750 mV\r\n" );
    log_printf( &logger, "-------------------------\r\n" );
    boostinv_set_positive_voltage( &boostinv, BOOSTINV_VOLTAGE_POSITIVE_7750_mV );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );

    log_printf( &logger, "        12000 mV\r\n" );
    log_printf( &logger, "-------------------------\r\n" );
    boostinv_set_positive_voltage( &boostinv, BOOSTINV_VOLTAGE_POSITIVE_12000_mV );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );

    log_printf( &logger, "         7750 mV\r\n" );
    log_printf( &logger, "-------------------------\r\n" );
    boostinv_set_positive_voltage( &boostinv, BOOSTINV_VOLTAGE_POSITIVE_7750_mV );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );

    // Sets Negative output voltage

    log_printf( &logger, " Negative output voltage \r\n" );
    log_printf( &logger, "- - - - - - - - - - - - -\r\n" );
    log_printf( &logger, "        -1450 mV\r\n" );
    log_printf( &logger, "-------------------------\r\n" );
    boostinv_set_negative_voltage( &boostinv, BOOSTINV_VOLTAGE_NEGATIVE_1450_mV );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );

    log_printf( &logger, "       - 6700 mV\r\n" );
    log_printf( &logger, "-------------------------\r\n" );
    boostinv_set_negative_voltage( &boostinv, BOOSTINV_VOLTAGE_NEGATIVE_6700_mV );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );

    log_printf( &logger, "       - 11050 mV\r\n" );
    log_printf( &logger, "-------------------------\r\n" );
    boostinv_set_negative_voltage( &boostinv, BOOSTINV_VOLTAGE_NEGATIVE_11050_mV );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );

    log_printf( &logger, "       - 6700 mV\r\n" );
    log_printf( &logger, "-------------------------\r\n" );
    boostinv_set_negative_voltage( &boostinv, BOOSTINV_VOLTAGE_NEGATIVE_6700_mV );
    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 form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.

Other mikroE Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.BoostInv

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. The terminal available in all Mikroelektronika compilers, or any other terminal application of your choice, can be used to read the message.