Buck 22 Click Board
Buck 22 Click Board
Key Features:
- DCS-Control topology for fast transient response, adjustable output voltage, 1% output voltage accuracy, 2.4MHz switching frequency, I2C interface, Power-Save Mode, Power-Good indicator, and more
- Based on the TPS62869 - synchronous step-down converter with an I2C interface from Texas Instruments
- Can be used to derive the required input voltage from a higher voltage source for FPGAs, ASICs, video chipsets, solid-state drives, and more
- mikroBUS: I2C Interface
The Buck 22 Click Board™ is a compact add-on board that steps down the voltage from its input (supply) to its output (load). This board features the TPS62869, a high-frequency synchronous step-down converter with an I2C interface from Texas Instruments, providing an efficient, adaptive, and high power-density solution. The TPS62869 operates in PWM mode at medium to heavy loads (for the slightest output voltage ripple). It automatically enters Power-Save Mode operation at a light load to maintain high efficiency over the entire output load current range. With its DCS-Control™ architecture, excellent load transient performance and tight output voltage accuracy are achieved alongside adjustable output voltage range from 0.8V to 3.35V with a 10mV step size. This Click board™ is used to derive the required input voltage from a higher voltage source for FPGAs, ASICs, video chipsets, solid-state drives, and many more.
The Buck 22 Click Board™ is supported by a mikroSDK-compliant library, which includes functions that simplify software development. This Click board™ comes as a thoroughly tested product, ready to be used on a system equipped with the mikroBUS™ socket.
Software Support
Software Support
We provide a library for the Buck 22 Click Board™ as well as a demo application (example), developed using MikroE compilers. The demo can run on all the main MikroE development boards.
The package can be downloaded/installed directly from NECTO Studio The package Manager(recommended), downloaded from our LibStock™ or found on MikroE Github account.
Library Description
This library contains API for the Buck 22 Click Board™ driver.
Key functions
-
buck22_set_vout
This function sets the output voltage by using I2C serial interface. -
buck22_read_vout
This function reads the output voltage by using I2C serial interface. -
buck22_get_pg_pin
This function returns the power good (PG) pin logic state.
Example Description
This example demonstrates the use of the Buck 22 Click Board™ by changing the output voltage.
void application_task ( void )
{
if ( !buck22_get_pg_pin ( &buck22 ) )
{
log_info ( &logger, " Device is shut down. " );
while ( !buck22_get_pg_pin ( &buck22 ) );
log_info ( &logger, " Device is powered up. " );
}
static uint16_t vout_mv = BUCK22_VOUT_MIN;
if ( BUCK22_OK == buck22_set_vout ( &buck22, vout_mv ) )
{
if ( BUCK22_OK == buck22_read_vout ( &buck22, &vout_mv ) )
{
log_printf ( &logger, " Vout: %u mVrn", vout_mv );
}
}
vout_mv += 100;
if ( vout_mv > BUCK22_VOUT_MAX )
{
vout_mv = BUCK22_VOUT_MIN;
}
Delay_ms ( 3000 );
}
The full application code, and ready to use projects can be installed directly from NECTO Studio The package Manager(recommended), downloaded from our LibStock™ or found on MikroE Github account.
Other MikroE Libraries used in the example:
- MikroSDK.Board
- MikroSDK.Log
- Click.Buck22
Additional Notes and Information
Depending on the development board you are using, you may need USB UART Click Board™, 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 MikroE compilers.
MIKROSDK
The Buck 22 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.
Buck 22 Click Board
Frequently Asked Questions
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