Increase (boost) a low voltage from a battery or other source to a stable 3.3V output with the XCL105B331H2-G and PIC32MZ2048EFH100
Synchronous step-up DC/DC converter with integrated switching FETs
Published Jun 04, 2024
Click board™
Boost 11 Click
Dev Board
Flip&Click PIC32MZ
Compiler
NECTO Studio
MCU
PIC32MZ2048EFH100
Provide a reliable voltage boost for powering low-power sensors or other industrial electronics from low-voltage sources
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Hardware Overview
How does it work?
Boost 11 Click is based on the XCL105B331H2-G, a synchronous step-up DC/DC converter from TOREX Semi. This component includes a reference voltage source, ramp wave circuit, error amplifier, PWM comparator, phase compensation circuit, N-channel driver FET, P-channel synchronous switching FET, and current limiter circuit. It can start operating from an input voltage of 0.9V, making it suitable for devices using single Alkaline or Nickel-metal hydride batteries. The operating voltage range spans from 0.9V to 6V, which applies to the VIN terminal. This versatility makes it ideal for industrial equipment, Internet of Things (IoT) devices, wearables, and any applications
prioritizing battery life. The XCL105B331H2-G operates by using the error amplifier to compare the internal reference voltage with the feedback voltage. The resulting output undergoes phase compensation and is fed to the PWM comparator. This comparator matches the signal from the error amplifier with the ramp wave circuit output, sending the resulting signal to the buffer driver circuit to control the PWM duty cycle. This continuous process stabilizes the output voltage, fixed at 3.3V and available at the VOUT terminal. Additionally, an output signal is available on the AN pin of the mikroBUS™ socket. The Boost 11 Click uses the EN pin of the mikroBUS™ socket in addition to the
AN pin. When the EN pin is set to a high logic level, the output voltage is raised via the Start-Up mode, initiating normal operation. When set to a low logic level, the IC enters Standby mode, significantly reducing current consumption. This Click board™ can operate with either 3.3V or 5V logic voltage levels selected via the VIO SEL jumper. This way, both 3.3V and 5V capable MCUs can use the communication lines properly. Also, this Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used as a reference for further development.
Features overview
Development board
Flip&Click PIC32MZ is a compact development board designed as a complete solution that brings the flexibility of add-on Click boards™ to your favorite microcontroller, making it a perfect starter kit for implementing your ideas. It comes with an onboard 32-bit PIC32MZ microcontroller, the PIC32MZ2048EFH100 from Microchip, four mikroBUS™ sockets for Click board™ connectivity, two USB connectors, LED indicators, buttons, debugger/programmer connectors, and two headers compatible with Arduino-UNO pinout. Thanks to innovative manufacturing technology,
it allows you to build gadgets with unique functionalities and features quickly. Each part of the Flip&Click PIC32MZ development kit contains the components necessary for the most efficient operation of the same board. In addition, there is the possibility of choosing the Flip&Click PIC32MZ programming method, using the chipKIT bootloader (Arduino-style development environment) or our USB HID bootloader using mikroC, mikroBasic, and mikroPascal for PIC32. This kit includes a clean and regulated power supply block through the USB Type-C (USB-C) connector. All communication
methods that mikroBUS™ itself supports are on this board, including the well-established mikroBUS™ socket, user-configurable buttons, and LED indicators. Flip&Click PIC32MZ development kit allows you to create a new application in minutes. Natively supported by Mikroe software tools, it covers many aspects of prototyping thanks to a considerable number of different Click boards™ (over a thousand boards), the number of which is growing every day.
Microcontroller Overview
MCU Card / MCU
Architecture
PIC32
MCU Memory (KB)
2048
Silicon Vendor
Microchip
Pin count
100
RAM (Bytes)
524288
Used MCU Pins
mikroBUS™ mapper
Take a closer look
Schematic
Step by step
Project assembly
Start by selecting your development board and Click board™. Begin with the Flip&Click PIC32MZ as your development board.
Track your results in real time
Application Output via Debug Mode
1. Once the code example is loaded, pressing the "DEBUG" button initiates the build process, programs it on the created setup, and enters Debug mode.
2. After the programming is completed, a header with buttons for various actions within the IDE becomes visible. Clicking the green "PLAY" button starts reading the results achieved with the Click board™. The achieved results are displayed in the Application Output tab.
Software Support
Library Description
This library contains API for Boost 11 Click driver.
Key functions:
boost11_active_mode- This function activates the boost operating mode.boost11_read_an_pin_voltage- This function reads results of AD conversion of the AN pin and converts them to proportional voltage level.
Open Source
Code example
This example can be found in NECTO Studio. Feel free to download the code, or you can copy the code below.
/*!
* @file main.c
* @brief Boost 11 Click Example.
*
* # Description
* This example demonstrates the use of Boost 11 click board
* by controlling the output state.
*
* The demo application is composed of two sections :
*
* ## Application Init
* Initialization of GPIO module, log UART, and activate the boost operating mode.
*
* ## Application Task
* The demo application reads measurements of the output voltage level [V].
* Results are being sent to the UART Terminal, where you can track their changes.
*
* @author Nenad Filipovic
*
*/
#include "board.h"
#include "log.h"
#include "boost11.h"
static boost11_t boost11; /**< Boost 11 Click driver object. */
static log_t logger; /**< Logger object. */
void application_init ( void )
{
log_cfg_t log_cfg; /**< Logger config object. */
boost11_cfg_t boost11_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.
boost11_cfg_setup( &boost11_cfg );
BOOST11_MAP_MIKROBUS( boost11_cfg, MIKROBUS_1 );
if ( ADC_ERROR == boost11_init( &boost11, &boost11_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
boost11_active_mode( &boost11 );
Delay_ms( 100 );
log_info( &logger, " Application Task " );
}
void application_task ( void )
{
float voltage = 0;
if ( BOOST11_OK == boost11_read_an_pin_voltage ( &boost11, &voltage ) )
{
log_printf( &logger, " Output Voltage : %.3f[V]\r\n\n", voltage );
Delay_ms( 1000 );
}
}
int main ( void )
{
application_init( );
for ( ; ; )
{
application_task( );
}
return 0;
}
// ------------------------------------------------------------------------ END
