# Title: Buck 13 Click Board™ ## Description: Equipped with a number of different protection features such as the overload protection, thermal protection, soft startup, this step-down converter offers a very secure and convenient way of reducing the input voltage from a VIN terminal. It provides a clean, low noise and reliable power source. It can be used for different types of power supplies, regulation of the wall transformers output, single board applications powered by high voltage, and for any application that requires clean and efficient step-down voltage conversion. How Does The Buck 13 Click Board™ Work? The step down DC-DC regulator used on the Buck 13 Click Board™ is the MPM3530, a 55V 3A ultra-low profile DC-to-DC power module by Monolithic Power Systems (MPS). This IC is a valley current mode controlled power module, meaning that it has a faster response than the traditional peak current mode control, thus better response to transients. This IC requires a minimal number of external components, which makes the whole device pretty robust and easy to work with. The output voltage is determined by the feedback voltage on the FB pin. Therefore, Buck 13 Click Board™ is equipped with a fixed voltage divider calculated to ensure stable, the most frequently used, 3.3V output. The MPM3530 operates at very high switching frequency of 520 kHz, which allows a good compromise between the efficiency and the size of the device with no external coil needed and minimal number of other external components. The Buck 13 Click Board™ uses the MCP3001, a 10-bit A/D converter (ADC) which uses the SPI interface, from Microchip. It allows monitoring the output voltage over the SPI interface. This ADC is powered from the +5V mikroBUS power rail. The same voltage is used to supply the MCP1541 voltage reference, as well. That way, the stable 4.096V rference voltage is obtained in order to ensure precise measurement of the output voltage. The Buck 13 Click Board™ itself requires an external power supply to be connected at the input terminal, labelled as VIN. The VOUT terminal provides the connected load with the regulated 3.3V voltage. The over-current protection is based on cycle-by-cycle limiting of the inductor current. If the output voltage starts to drop during the current limiting interval, causing the FB voltage to drop under 50% of the internal reference, the device enters the hiccup mode, shutting down the output. After a fixed period, the device will try to re-enable the output. If the short-circuit condition still exists, it will shut down the output again, repeating the whole process, until the short-circuit condition disappears. The hiccup mode greatly reduces the short-circuit current, protecting the device when the output is shorted to ground. Thanks to its ability to work with the high duty cycle of the internal switching PWM signal, the MPM3530 requires the input voltage to be only about 0.7V above the output voltage, in order to maintain the regulation. However, if the input voltage drops under 3.5V, the device will not be able to operate properly. Therefore, the under-voltage protection shuts down the device, as a protection measure. The under-voltage protection is disabled once the input voltage exceeds 3.9V. This small hysteresis of 0.4V prevents erratic behavior in border-cases. As mentioned before, the voltage of the power supply at the input terminal should stay within the range between 4V and 55V. However, the voltage at the input is desirable to be approximately 5.7V to 6V at least, in order to provide a good regulation at the output. SPECIFICATIONS Type Buck Applications The Buck 13 Click Board™ is the perfect choice for step-down applications for embedded electronic devices, servers, routers, data storage devices, low-power ICs, etc On-board modules MPM3530, 3A ultra-low profile DC-to-DC power module by Monolithic Power Systems (MPS) MCP3001, a 10-bit A/D converter (ADC) which uses the SPI interface, from Microchip. Key Features Buck 13 Click Board™ features a wide range of input voltages, pin configurable working parameters, internal soft start, thermal shutdown, hiccup mode short-circuit protection and high switching efficiency Interface SPI Compatibility mikroBUS Click Board™ size L (57.15 x 25.4 mm) Input Voltage 5V PINOUT DIAGRAM This table shows how the pinout on Buck 13 Click Board™ corresponds to the pinout on the mikroBUS socket (the latter shown in the two middle columns). Notes Pin Pin Notes Enable Input EN 1 AN PWM 16 NC NC 2 RST INT 15 NC Chip Select CS 3 CS RX 14 NC SPI Clock SCK 4 SCK TX 13 NC SPI Data Out SDO 5 MISO SCL 12 NC NC 6 MOSI SDA 11 NC NC 7 3.3V 5V 10 5V Power supply Ground GND 8 GND GND 9 GND Ground ONBOARD SETTINGS AND INDICATORS Label Name Default Description LD1 PWR - Power LED Indicator TB1 VIN-EXT - Screw terminal for connecting an external voltage source TB2 VOUT - Screw terminal for connecting the load BUCK 13 Click Board™ ELECTRICAL SPECIFICATIONS Description Min Typ Max Unit Input voltage range 4.5 5 55 V Output voltage range - 3.3 - V Output current 0 - 3 A ## Product type: Click Board ## Vendor: Mikroelektronika d.o.o. ## Tags: Buck Converter, Click Board, Function_Buck Converter, MikroE, Power Management ## Price range: 24.5 - 24.5 GBP ## Link: https://thedebugstore.com/products/buck-13-click-board-mikroe-3651-uk ## Compare-at price range: 35.0 - 35.0 GBP ## Options - Title: Default Title ## Collections - [New Products](https://thedebugstore.com/a/llms/collections/new-products-debug-store) - [Mikroelektronika d.o.o. 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Equipped with a number of different protection features such as the overload protection, thermal protection, soft startup, this step-down converter offers a very secure and convenient way of reducing the input voltage from a VIN terminal. It provides a clean, low noise and reliable power source. It can be used for different types of power supplies, regulation of the wall transformers output, single board applications powered by high voltage, and for any application that requires clean and efficient step-down voltage conversion.

How Does The Buck 13 Click Board™ Work?

The step down DC-DC regulator used on the Buck 13 Click Board™ is the MPM3530, a 55V 3A ultra-low profile DC-to-DC power module by Monolithic Power Systems (MPS). This IC is a valley current mode controlled power module, meaning that it has a faster response than the traditional peak current mode control, thus better response to transients. This IC requires a minimal number of external components, which makes the whole device pretty robust and easy to work with.

Buck 13 Click Board™

The output voltage is determined by the feedback voltage on the FB pin. Therefore, Buck 13 Click Board™ is equipped with a fixed voltage divider calculated to ensure stable, the most frequently used, 3.3V output. The MPM3530 operates at very high switching frequency of 520 kHz, which allows a good compromise between the efficiency and the size of the device with no external coil needed and minimal number of other external components.

The Buck 13 Click Board™ uses the MCP3001, a 10-bit A/D converter (ADC) which uses the SPI interface, from Microchip. It allows monitoring the output voltage over the SPI interface. This ADC is powered from the +5V mikroBUS power rail. The same voltage is used to supply the MCP1541 voltage reference, as well. That way, the stable 4.096V rference voltage is obtained in order to ensure precise measurement of the output voltage. The Buck 13 Click Board™ itself requires an external power supply to be connected at the input terminal, labelled as VIN. The VOUT terminal provides the connected load with the regulated 3.3V voltage.

The over-current protection is based on cycle-by-cycle limiting of the inductor current. If the output voltage starts to drop during the current limiting interval, causing the FB voltage to drop under 50% of the internal reference, the device enters the hiccup mode, shutting down the output. After a fixed period, the device will try to re-enable the output. If the short-circuit condition still exists, it will shut down the output again, repeating the whole process, until the short-circuit condition disappears. The hiccup mode greatly reduces the short-circuit current, protecting the device when the output is shorted to ground.

Thanks to its ability to work with the high duty cycle of the internal switching PWM signal, the MPM3530 requires the input voltage to be only about 0.7V above the output voltage, in order to maintain the regulation. However, if the input voltage drops under 3.5V, the device will not be able to operate properly. Therefore, the under-voltage protection shuts down the device, as a protection measure. The under-voltage protection is disabled once the input voltage exceeds 3.9V. This small hysteresis of 0.4V prevents erratic behavior in border-cases.

As mentioned before, the voltage of the power supply at the input terminal should stay within the range between 4V and 55V. However, the voltage at the input is desirable to be approximately 5.7V to 6V at least, in order to provide a good regulation at the output.

SPECIFICATIONS

Type Buck
Applications The Buck 13 Click Board™ is the perfect choice for step-down applications for embedded electronic devices, servers, routers, data storage devices, low-power ICs, etc
On-board modules MPM3530, 3A ultra-low profile DC-to-DC power module by Monolithic Power Systems (MPS) MCP3001, a 10-bit A/D converter (ADC) which uses the SPI interface, from Microchip.
Key Features Buck 13 Click Board™ features a wide range of input voltages, pin configurable working parameters, internal soft start, thermal shutdown, hiccup mode short-circuit protection and high switching efficiency
Interface SPI
Compatibility mikroBUS
Click Board™ size L (57.15 x 25.4 mm)
Input Voltage 5V

 

PINOUT DIAGRAM

This table shows how the pinout on Buck 13 Click Board™ corresponds to the pinout on the mikroBUS socket (the latter shown in the two middle columns).

Notes Pin mikroBUS logo.png Pin Notes
Enable Input EN 1 AN PWM 16 NC  
  NC 2 RST INT 15 NC  
Chip Select CS 3 CS RX 14 NC  
SPI Clock SCK 4 SCK TX 13 NC  
SPI Data Out SDO 5 MISO SCL 12 NC  
  NC 6 MOSI SDA 11 NC  
  NC 7 3.3V 5V 10 5V Power supply
Ground GND 8 GND GND 9 GND Ground


ONBOARD SETTINGS AND INDICATORS

Label Name Default  Description
LD1 PWR - Power LED Indicator
TB1 VIN-EXT - Screw terminal for connecting an external voltage source
TB2 VOUT - Screw terminal for connecting the load


BUCK 13 Click Board™ ELECTRICAL SPECIFICATIONS

Description Min Typ Max Unit
Input voltage range 4.5 5 55 V
Output voltage range - 3.3 - V
Output current 0 - 3 A
- description_tag: The Buck 13 Click Board™ is a high-efficiency step-down converter that provides a highly regulated output voltage derived from the connected power source, rated from 4.5V to 5.5V. Available from Debug Store UK. - title_tag: MikroE Buck 13 Click Board™ (MIKROE-3651) - manufacturer: Mikroelektronika d.o.o. - warranty: 12 months - amazon_enable: TRUE - amazon_title: Buck 13 Click Board - amazon_product_type: computercomponent - amazon_block: FALSE - amazon_prime_enable: FALSE - amazon_search: MikroElektronika Microelectronica MIKROE-1100 - amazon_uk_price: 25.52 - amazon_uk_currency: GBP - amazon_de_currency: EUR - amazon_de_price: 28.8376 - amazon_fr_currency: EUR - amazon_fr_price: 28.8376 - amazon_es_currency: EUR - amazon_es_price: 28.8376 - amazon_nl_currency: EUR - amazon_nl_price: 28.8376 - amazon_it_currency: EUR - amazon_it_price: 28.8376 - amazon_se_curency: SEK - amazon_se_price: 290.928 - amazon_product_id: 8606018716388 - amazon_product_id_type: EAN - amazon_update: Update - amazon_short_description: The Buck 13 Click Board™ is a high-efficiency step-down converter which provides a highly regulated output voltage derived from the connected power source, rated from 4.5V to 5.5V. The regulated output voltage is 3.3V, the most common choise for various embeded applications. Buck 13 Click Board™ is based around an integrated DC-DC converter, labeled as MPM3530. Due to its high efficiency, MPM3530 allows the Click Board™ to easily deliver up to 3A of current. The MPM3530 is very reliable, offering over-current and over-voltage protection, as well as a thermal shutdown. - amazon_long_description:

Buck 13 Click Board™

- amazon_main_image: https://www.thedebugstore.com/images/product/lg-buck-13-click-3651-front_1.jpg - amazon_other_image_1: https://www.thedebugstore.com/images/product/lg-buck-13-click-3651-back_1.jpg - amazon_other_image_2: https://www.thedebugstore.com/images/product/lg-buck-13-click-3651-in-use_1.jpg - amazon_other_image_3: https://www.thedebugstore.com/images/product/lg-buck-13-click-3651-in-use_1.jpg - amazon_browse_node: 428655031 - related_products: MIKROE-3652,MIKROE-2911,MIKROE-3201,MIKROE-3569,MIKROE-3438,MIKROE-3847,MIKROE-1592,MIKROE-2806,MIKROE-2963,MIKROE-2957,MIKROE-2971,MIKROE-2997,MIKROE-3094,MIKROE-3100,MIKROE-3057,MIKROE-3277,MIKROE-3113,MIKROE-2887,MIKROE-4354 - mpn: MIKROE-3651 - backorder_label: If no stock shown above, check availability - google_product_category: 222 - examples:

We provide a library for the Buck 13 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

This library performs a control of the Buck 13 Click Board™, which is used to convert the input DC voltage, in the range from 6.5V to 50V, to output DC voltage of 3.3V, with maximal current of 3A. Library uses SPI serial interface to allow the ADC output reading from the Buck 13. For more details check documentation.

Key Functions

Example Description

The application is composed of three sections :

void applicationTask()
{
    rx_dat = UART_Rdy_Ptr();
    
    if (rx_dat != 0)
    {
        rx_dat = UART_Rd_Ptr();
        
        switch (rx_dat)
        {
            case 'e' :
            {
                if (out_state == _BUCK13_DISABLE)
                {
                    buck13_enable( _BUCK13_ENABLE );
                    out_state = _BUCK13_ENABLE;
                    mikrobus_logWrite( "** Buck 13 output is enabled now.", _LOG_LINE );
                }
                else
                {
                    mikrobus_logWrite( "** Buck 13 output is already enabled.", _LOG_LINE );
                }
            break;
            }
            case 'd' :
            {
                if (out_state == _BUCK13_ENABLE)
                {
                    buck13_enable( _BUCK13_DISABLE );
                    out_state = _BUCK13_DISABLE;
                    mikrobus_logWrite( "** Buck 13 output is disabled now.", _LOG_LINE );
                }
                else
                {
                    mikrobus_logWrite( "** Buck 13 output is already disabled.", _LOG_LINE );
                }
            break;
            }
            case 'v' :
            {
                out_voltage = buck13_getVoltage();
                
                WordToStr( out_voltage, text );
                Ltrim( text );
                mikrobus_logWrite( "** VOUT = ", _LOG_TEXT );
                mikrobus_logWrite( text, _LOG_TEXT );
                mikrobus_logWrite( " mV.", _LOG_LINE );
            break;
            }
            case 'c' :
            {
                writeCmd();
            break;
            }
            default :
            {
                mikrobus_logWrite( "*****    Invalid command.    *****", _LOG_LINE );
                writeCmd();
            break;
            }
        }
    }
}

Additional Functions :

The full application code, and ready to use projects can be found on our LibStock page.

Other mikroE Libraries used in the example:

Additional Notes and Information

Depending on the development board you are using, you may need a USB UART Click Board™, USB UART 2 Click Board™ or RS232 Click Board™ 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 13 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.

- attachments: [{"download_file":[{"download_file":"Buck 13 Click Board™ Schematic"}]},{"download_file":[{"download_file":"MPS MPM3530 Step-Down Converter Datasheet"}]}] - condition: new - custom_product: false - mpn: MIKROE-3651 - google_product_category: Electronics - custom_label_0: Click Board - device_vendor: Microchip Technology, Monolithic Power Systems Inc. - device_type: MCP3001-I/MS, MPM3530GRF - warranty: 12 months - brand: MikroE - manufacturer: Mikroelektronika d.o.o. - badge: - widget:

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- target_keyword: Buck 13 Click Board - brands: gid://shopify/Metaobject/56256004319 - breadcrumbs: ["gid://shopify/Collection/447955239135","gid://shopify/Collection/241680580797","gid://shopify/Collection/241545478333"] - customhs_code: 847330 - detailed_description: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Equipped with a number of different protection features such as the overload protection, thermal protection, soft startup, this step-down converter offers a very secure and convenient way of reducing the input voltage from a VIN terminal. It provides a clean, low noise and reliable power source. It can be used for different types of power supplies, regulation of the wall transformers output, single board applications powered by high voltage, and for any application that requires clean and efficient step-down voltage conversion."}]},{"type":"heading","level":3,"children":[{"type":"text","value":"How Does The Buck 13 Click Board™ Work?"}]},{"type":"paragraph","children":[{"type":"text","value":"The step down DC-DC regulator used on the "},{"type":"text","value":"Buck 13 Click Board™","bold":true},{"type":"text","value":" is the MPM3530, a 55V 3A ultra-low profile DC-to-DC power module by Monolithic Power Systems (MPS). This IC is a valley current mode controlled power module, meaning that it has a faster response than the traditional peak current mode control, thus better response to transients. This IC requires a minimal number of external components, which makes the whole device pretty robust and easy to work with."}]},{"type":"paragraph","children":[{"type":"text","value":""}]},{"type":"paragraph","children":[{"type":"text","value":"The output voltage is determined by the feedback voltage on the FB pin. Therefore, "},{"type":"text","value":"Buck 13 Click Board™","bold":true},{"type":"text","value":" is equipped with a fixed voltage divider calculated to ensure stable, the most frequently used, 3.3V output. The MPM3530 operates at very high switching frequency of 520 kHz, which allows a good compromise between the efficiency and the size of the device with no external coil needed and minimal number of other external components."}]},{"type":"paragraph","children":[{"type":"text","value":"The "},{"type":"text","value":"Buck 13 Click Board™","bold":true},{"type":"text","value":" uses the MCP3001, a 10-bit A/D converter (ADC) which uses the SPI interface, from Microchip. It allows monitoring the output voltage over the SPI interface. This ADC is powered from the +5V mikroBUS power rail. The same voltage is used to supply the MCP1541 voltage reference, as well. That way, the stable 4.096V rference voltage is obtained in order to ensure precise measurement of the output voltage. The "},{"type":"text","value":"Buck 13 Click Board™","bold":true},{"type":"text","value":" itself requires an external power supply to be connected at the input terminal, labelled as VIN. The VOUT terminal provides the connected load with the regulated 3.3V voltage."}]},{"type":"paragraph","children":[{"type":"text","value":"The over-current protection is based on cycle-by-cycle limiting of the inductor current. If the output voltage starts to drop during the current limiting interval, causing the FB voltage to drop under 50% of the internal reference, the device enters the hiccup mode, shutting down the output. After a fixed period, the device will try to re-enable the output. If the short-circuit condition still exists, it will shut down the output again, repeating the whole process, until the short-circuit condition disappears. The hiccup mode greatly reduces the short-circuit current, protecting the device when the output is shorted to ground."}]},{"type":"paragraph","children":[{"type":"text","value":"Thanks to its ability to work with the high duty cycle of the internal switching PWM signal, the MPM3530 requires the input voltage to be only about 0.7V above the output voltage, in order to maintain the regulation. However, if the input voltage drops under 3.5V, the device will not be able to operate properly. Therefore, the under-voltage protection shuts down the device, as a protection measure. The under-voltage protection is disabled once the input voltage exceeds 3.9V. This small hysteresis of 0.4V prevents erratic behavior in border-cases."}]},{"type":"paragraph","children":[{"type":"text","value":"As mentioned before, the voltage of the power supply at the input terminal should stay within the range between 4V and 55V. However, the voltage at the input is desirable to be approximately 5.7V to 6V at least, in order to provide a good regulation at the output."}]},{"type":"heading","level":3,"children":[{"type":"text","value":"SPECIFICATIONS"}]},{"type":"paragraph","children":[{"type":"text","value":"Type\nBuck\nApplications\nThe Buck 13 Click Board™ is the perfect choice for step-down applications for embedded electronic devices, servers, routers, data storage devices, low-power ICs, etc\nOn-board modules\nMPM3530, 3A ultra-low profile DC-to-DC power module by Monolithic Power Systems (MPS) MCP3001, a 10-bit A/D converter (ADC) which uses the SPI interface, from Microchip.\nKey Features\nBuck 13 Click Board™ features a wide range of input voltages, pin configurable working parameters, internal soft start, thermal shutdown, hiccup mode short-circuit protection and high switching efficiency\nInterface\nSPI\nCompatibility\nmikroBUS\nClick Board™ size\nL (57.15 x 25.4 mm)\nInput Voltage\n5V"}]},{"type":"paragraph","children":[{"type":"text","value":" "}]},{"type":"heading","level":3,"children":[{"type":"text","value":"PINOUT DIAGRAM"}]},{"type":"paragraph","children":[{"type":"text","value":"This table shows how the pinout on Buck 13 Click Board™ corresponds to the pinout on the mikroBUS socket (the latter shown in the two middle columns)."}]},{"type":"paragraph","children":[{"type":"text","value":"Notes\nPin\nPin\nNotes\nEnable Input\nEN\n1\nAN\nPWM\n16\nNC\nNC\n2\nRST\nINT\n15\nNC\nChip Select\nCS\n3\nCS\nRX\n14\nNC\nSPI Clock\nSCK\n4\nSCK\nTX\n13\nNC\nSPI Data Out\nSDO\n5\nMISO\nSCL\n12\nNC\nNC\n6\nMOSI\nSDA\n11\nNC\nNC\n7\n3.3V\n5V\n10\n5V\nPower supply\nGround\nGND\n8\nGND\nGND\n9\nGND\nGround"}]},{"type":"heading","level":3,"children":[{"type":"text","value":""},{"type":"text","value":"ONBOARD SETTINGS AND INDICATORS"}]},{"type":"paragraph","children":[{"type":"text","value":"Label\nName\nDefault\n Description\nLD1\nPWR\n-\nPower LED Indicator\nTB1\nVIN-EXT\n-\nScrew terminal for connecting an external voltage source\nTB2\nVOUT\n-\nScrew terminal for connecting the load"}]},{"type":"heading","level":3,"children":[{"type":"text","value":""},{"type":"text","value":"BUCK 13 Click Board™ ELECTRICAL SPECIFICATIONS"}]},{"type":"paragraph","children":[{"type":"text","value":"Description\nMin\nTyp\nMax\nUnit\nInput voltage range\n4.5\n5\n55\nV\nOutput voltage range\n-\n3.3\n-\nV\nOutput current\n0\n-\n3\nA"}]}]} - summary:

The Buck 13 Click Board™ is a high-efficiency step-down converter that provides a highly regulated output voltage derived from the connected power source, rated from 4.5V to 5.5V. The regulated output voltage is 3.3V, the most common choice for various embedded applications. The Buck 13 Click Board™ is based around an integrated DC-DC converter, labelled as MPM3530.

Due to its high efficiency, MPM3530 allows the Click Board™ to easily deliver up to 3A of current. The MPM3530 is very reliable, offering over-current and over-voltage protection, as well as a thermal shutdown.