Buck 11 Click Board
Buck 11 Click Board
The Buck 11 Click Board™ is a high-efficiency step-down converter that provides 3.3V on its output, derived from the connected power supply voltage, in the range from 4.2V to 60V. Buck 11 Click Board™ is based on the LMR36015, a highly efficient DC-DC step-down converter. In addition, the Buck 11 Click Board™ offers to monitor the stability of the output voltage by employing an additional A/D converter circuit. Due to its high efficiency, LMR36015 allows the Click Board™ to deliver up to 1.5A of current efficiently. The efficiency for lighter loads is optimized by using the PFM mode. It features a Hot Rod™ package which enables a low noise performance, high efficiency, and compact size.
Software Support
We provide a library for the Buck 11 Click Board™ on our LibStock page, as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.
Library Description
The library allows user to perform the VOUT measurement of the Buck 11 Click Board™. One measurement cycle can consist a one conversion or more averaged conversions. This library also allows user to enter a real measured reference voltage for the AD conversion (VDD). For more details check documentation.
Key Functions
void buck11_set_vdd_value( float vdd_volts )
- This function allows user to set VDD voltage to the desired (measured) value.uint16_t buck11_read_adc( void )
- This function reads the results of the AD conversion from the MCP3221A5T 12-bit converter.float buck11_get_vout( uint8_t vout_resolution )
- This function allows user to get VOUT voltage value in the desired unit resolution, volts or millivolts.
Example Description
The application is composed of the three sections :
- System Initialization - Initializes peripherals and pins.
- Application Initialization - Initializes I2C serial interface and selects the desired VDD voltage value and VOUT value resolution (to get VOUT value in Volts). Note : The user should measure the VDD voltage value and enter this measured value to the function as VDD value to get more accurate measurement. This VDD voltage is used as reference voltage for the AD conversion.
- Application Task - (code snippet) - Reads the averaged VOUT voltage calculated to Volts by performing a 30 conversions in one measurement cycle. The measured results will be showed on the uart terminal every 300 milliseconds. Note : The input voltage (VIN) range is from 4.2V to 60V. The output current (IOUT) value should not be greater than 1.5A.
void applicationTask() { vout_value = buck11_get_averaged_vout( vout_resol, 30 ); FloatToStr( vout_value, text ); floatCut(); mikrobus_logWrite( "** VOUT : ", _LOG_TEXT ); mikrobus_logWrite( text, _LOG_TEXT ); if (vout_resol == _BUCK11_VOUT_VOLTS) { mikrobus_logWrite( " V", _LOG_LINE ); } else { mikrobus_logWrite( " mV", _LOG_LINE ); } mikrobus_logWrite( "*************************************", _LOG_LINE ); Delay_ms( 300 ); }
Additional Functions :
- floatCut - Allows to real values be rounded on two decimal places.
The full application code, and ready to use projects can be found on our LibStock page.
Other mikroE Libraries used in the example:
I2C
UART
Conversions
Additional Notes and Information
Depending on the development board you are using, you may need a 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.
MIKROSDK
The Buck 11 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 11 Click Board
Frequently Asked Questions
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