Intermediate
30 min

Ignite your power with TPS55332-Q1 and ATmega32

Experience the boost

Boost 6 Click with EasyAVR v7

Published Nov 01, 2023

Click board™

Boost 6 Click

Development board

EasyAVR v7

Compiler

NECTO Studio

MCU

ATmega32

Empower your circuits to soar with our state-of-the-art voltage booster!

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Hardware Overview

How does it work?

Boost 6 Click is based on the TPS55332-Q1, the monolithic high-voltage switching regulator from Texas Instruments. It is important to state that it operates as a step-up (boost) converter. The feedback concept is voltage mode control using the VSENSE terminal with a cycle-by-cycle current limit. The voltage supervisory function for power-on-rest during system power-on monitoring the output voltage, and once this has exceeded the threshold set by RST_TH, a delay of 1.0 ms/nF (based on the capacitor value on the Cdly terminal) is invoked before the RST line is released high. The output is sensed through an external resistor divider and compared with an internal reference voltage. The value of the adjustable output voltage in boost mode is selectable between VIN × 1.05 to 50 V if the minimum ON time (ton) and minimum OFF times are NOT violated by choosing the external resistors. The internal reference voltage Vref has a ±1.5% tolerance. The potentiometer featured on the Boost 6 click can change the feedback, thus influencing a change in the output voltage.

This makes the Click extremely practical because you can get the full voltage range with a simple turn of the potentiometer. Once the internal circuits have stabilized with a minimum input supply of 3.6V, the system can have an input voltage range from 1.5V to 40V to maintain a fixed boost output voltage. Over-current protection is implemented by sensing the current through the NMOS switch FET. The sensed current is then compared to a current reference level representing the over-current threshold limit. The over-current indicator is set to true if the sensed current exceeds the over-current threshold limit. The system ignores the over-current indicator for the leading edge blanking time at the beginning of each cycle to avoid any turn-on noise glitches. The oscillator frequency is selectable by means of a resistor placed at the RT pin. The switching frequency (ƒsw) can be set at 80kHz to 2.2MHz. The power-on reset output is asserted low until the output voltage exceeds the programmed Vreg_RST voltage threshold and the reset delay timer has expired. Additionally, whenever the

Enable pin is low or open, RST is immediately asserted low regardless of the output voltage. There is a reset de-glitch timer to prevent a reset from being invoked due to short negative transients on the output line. The TPS55332-Q1 device is designed to operate from an input voltage of up to 40 V. Ensure that the input supply is well-regulated and can protect itself from overheating with an internal thermal shutdown circuit. The MOSFET is turned off if the junction temperature exceeds the thermal shutdown trip point. The device is restarted under the control of the slow start circuit automatically when the junction temperature drops below the thermal shutdown hysteresis trip point. This Click board™ can operate with either 3.3V or 5V logic voltage levels selected via the VCC SEL jumper. This way, both 3.3V and 5V capable MCUs can use the communication lines properly. However, the 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.

Boost 6 Click hardware overview image

Features overview

Development board

EasyAVR v7 is the seventh generation of AVR development boards specially designed for the needs of rapid development of embedded applications. It supports a wide range of 16-bit AVR microcontrollers from Microchip and has a broad set of unique functions, such as a powerful onboard mikroProg programmer and In-Circuit debugger over USB. The development board is well organized and designed so that the end-user has all the necessary elements in one place, such as switches, buttons, indicators, connectors, and others. With four different connectors for each port, EasyAVR v7 allows you to connect accessory boards, sensors, and custom electronics more

efficiently than ever. Each part of the EasyAVR v7 development board contains the components necessary for the most efficient operation of the same board. An integrated mikroProg, a fast USB 2.0 programmer with mikroICD hardware In-Circuit Debugger, offers many valuable programming/debugging options and seamless integration with the Mikroe software environment. Besides it also includes a clean and regulated power supply block for the development board. It can use a wide range of external power sources, including an external 12V power supply, 7-12V AC or 9-15V DC via DC connector/screw terminals, and a power source via the USB Type-B (USB-B)

connector. Communication options such as USB-UART and RS-232 are also included, alongside the well-established mikroBUS™ standard, three display options (7-segment, graphical, and character-based LCD), and several different DIP sockets which cover a wide range of 16-bit AVR MCUs. EasyAVR v7 is an integral part of the Mikroe ecosystem for rapid development. Natively supported by Mikroe software tools, it covers many aspects of prototyping and development thanks to a considerable number of different Click boards™ (over a thousand boards), the number of which is growing every day.

EasyAVR v7 horizontal image

Microcontroller Overview

MCU Card / MCU

default

Architecture

AVR

MCU Memory (KB)

32

Silicon Vendor

Microchip

Pin count

40

RAM (Bytes)

2048

Used MCU Pins

mikroBUS™ mapper

Reset
PA7
AN
Chip Enable
PA6
RST
NC
NC
CS
NC
NC
SCK
NC
NC
MISO
NC
NC
MOSI
Power Supply
3.3V
3.3V
Ground
GND
GND
External Synchronization Clock
PD4
PWM
NC
NC
INT
NC
NC
TX
NC
NC
RX
NC
NC
SCL
NC
NC
SDA
Power Supply
5V
5V
Ground
GND
GND
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Take a closer look

Schematic

Boost 6 Click Schematic schematic

Step by step

Project assembly

EasyAVR v7 front image hardware assembly

Start by selecting your development board and Click board™. Begin with the EasyAVR v7 as your development board.

EasyAVR v7 front image hardware assembly
GNSS2 Click front image hardware assembly
MCU DIP 40 hardware assembly
GNSS2 Click complete accessories setup image hardware assembly
EasyAVR v7 Access DIP MB 1 - upright/background hardware assembly
Necto image step 2 hardware assembly
Necto image step 3 hardware assembly
Necto image step 4 hardware assembly
NECTO Compiler Selection Step Image hardware assembly
NECTO Output Selection Step Image hardware assembly
Necto image step 6 hardware assembly
Necto DIP image step 7 hardware assembly
EasyPIC PRO v7a Display Selection Necto Step hardware assembly
Necto image step 9 hardware assembly
Necto image step 10 hardware assembly
Necto PreFlash Image hardware assembly

Track your results in real time

Application Output

After pressing the "FLASH" button on the left-side panel, it is necessary to open the UART terminal to display the achieved results. By clicking on the Tools icon in the right-hand panel, multiple different functions are displayed, among which is the UART Terminal. Click on the offered "UART Terminal" icon.

UART Application Output Step 1

Once the UART terminal is opened, the window takes on a new form. At the top of the tab are two buttons, one for adjusting the parameters of the UART terminal and the other for connecting the UART terminal. The tab's lower part is reserved for displaying the achieved results. Before connecting, the terminal has a Disconnected status, indicating that the terminal is not yet active. Before connecting, it is necessary to check the set parameters of the UART terminal. Click on the "OPTIONS" button.

UART Application Output Step 2

In the newly opened UART Terminal Options field, we check if the terminal settings are correct, such as the set port and the Baud rate of UART communication. If the data is not displayed properly, it is possible that the Baud rate value is not set correctly and needs to be adjusted to 115200. If all the parameters are set correctly, click on "CONFIGURE".

UART Application Output Step 3

The next step is to click on the "CONNECT" button, after which the terminal status changes from Disconnected to Connected in green, and the data is displayed in the Received data field.

UART Application Output Step 4

Software Support

Library Description

This library contains API for Boost 6 Click driver.

Key functions:

  • boost6_hw_reset - This function hardware reset the TPS55332-Q1

  • boost6_power_off - This function powers OFF the TPS55332-Q1

  • boost6_power_on - This function powers ON the TPS55332-Q1

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 
 * \brief Boost 6 Click example
 * 
 * # Description
 * This app enable or disable monolithic high-voltage switching regulator.
 *
 * The demo application is composed of two sections :
 * 
 * ## Application Init 
 * Initializes device.
 * 
 * ## Application Task  
 * This is an example which demonstrates the use of Boost 6 click board.
 * Enable device 5000ms and disable device 5000ms.
 * 
 * \author MikroE Team
 *
 */
// ------------------------------------------------------------------- INCLUDES

#include "board.h"
#include "log.h"
#include "boost6.h"

// ------------------------------------------------------------------ VARIABLES

static boost6_t boost6;
static log_t logger;

// ------------------------------------------------------ APPLICATION FUNCTIONS

void application_init ( void )
{
    log_cfg_t log_cfg;
    boost6_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 ----\r\n" );

    //  Click initialization.

    boost6_cfg_setup( &cfg );
    BOOST6_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    boost6_init( &boost6, &cfg );

    log_printf( &logger, "-----------------\r\n" );
    log_printf( &logger, "  Boost 6 click  \r\n" );
    log_printf( &logger, "-----------------\r\n" );

    log_printf( &logger, "-----------------\r\n" );
    log_printf( &logger, " Hardware  Reset \r\n" );
    log_printf( &logger, "-----------------\r\n" );
    boost6_hw_reset ( &boost6 );
    Delay_100ms( );

    boost6_power_off(  &boost6  );
    log_printf( &logger, "     Disable     \r\n" );
    log_printf( &logger, "-----------------\r\n" );
    Delay_100ms( );
}

void application_task ( void )
{
    boost6_power_on( &boost6 );
    log_printf( &logger, "     Enable      \r\n" );
    log_printf( &logger, "-----------------\r\n" );

    Delay_ms( 5000 );

    boost6_power_off(  &boost6  );
    log_printf( &logger, "     Disable     \r\n" );
    log_printf( &logger, "-----------------\r\n" );

    Delay_ms( 5000 );
}

void main ( void )
{
    application_init( );

    for ( ; ; )
    {
        application_task( );
    }
}

// ------------------------------------------------------------------------ END

Additional Support

Resources