Step-up / step-down converters are advanced electronic devices that are successfully used in various production machines, motors and other applications. Step-up / step-down converters are tools that enable the conversion of DC voltage from the power source to DC voltage with a lower or higher value for the receiver. They can be used to increase and decrease tension levels. The construction of switched-mode power supplies is based on such converters. The working elements of step-up / step-down converters include semiconductor components switching capacitors, energy storage coils and anti-interference filters. Built-in output voltage adjustment potentiometers contribute to the fact that this type of converters are a very good solution as voltage regulators for receivers requiring non-standard supply voltage.
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Index: AAE-24033
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Velleman VMP501 prototype KIT for Raspberry Pi 4B/3B+/3B/2B/Zero
Index: VEL-10722
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Converters step-up / step-down
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Pololu Step-Up/Step-Down Voltage Regulator S7V7F5 - 5V 1A - soldered connectors
A small module of the pulse inverter, supplied with voltage from 2.7 V to 11.8 V . Output voltage is set to 5 V , maximum output current is 1 A . The module dimensions are:...
Index: PLL-16153
Index: PLL-16153
Step-Up/Step-Down Voltage Regulator S7V7F5 - 5V 1A - Pololu 2119
Miniature impulse converter module supplied with the voltage in the range: from 2.7 V to 11.8 V. The output voltage is set at 5 V. Maximum current 1 A. Dimensions: 9 x 12 x 3...
Index: PLL-00941
Index: PLL-00941
Index: PLL-19768
Step-Up/Step-Down Voltage Regulator S7V8F3 - 3,3V 1A - Pololu 2122
Pulse inverter module. Input voltage 2.7 V to 11.8 V . Output voltage: 3,3 V. Maximum output current 1 A.
Index: PLL-01427
Index: PLL-01427
Step-Up/Step-Down Voltage Regulator S18V20F12 - 12V 2A - Pololu 2577
Step-up/step-down converter with 12 V output voltage. Maximum current 2 A . Input voltage: 3 V to 30 V
Index: PLL-02102
Index: PLL-02102
Step-Up/Step-Down Voltage Regulator S13V25F12 - 12V 2,5A - Pololu 4984
The Pololu S13V25F12 step-up / step-down converter is a device for converting input voltage in the range of 2.8 V to 22 V into a stabilized output voltage of 12 V. The...
Index: PLL-23470
Index: PLL-23470
Step-Up/Step-Down Voltage Regulator S13V15F5 - 5V 1,5A - Pololu 4084
A small step-up / step-down voltage converter module generating 5 V output voltage and 1.5 A current capacity. The converter can be supplied with a voltage range from...
Index: PLL-21021
Index: PLL-21021
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S8V9F7 - step-up/step-down inverter - 7.5V 1.5A - Pololu 4967
The Pololu S8V9F7 converter is a device designed to effectively convert input voltage from 1.4 V to 16 V into a stable 7.5 V at the output. It offers a compact design and...
Index: PLL-23802
Index: PLL-23802
Step-Up/Step-Down Voltage Regulator S9V11F3S5 - 3,3V 1,5A - Pololu 2872
Miniature boost converter module supplied with voltage from 3 V to 16 V . The output voltage is set to 3.3 V . Maximum current 1,5 A. Dimensions: 15 x 13 x 6 mm.
Index: PLL-10675
Index: PLL-10675
Volt VP-2000VA - transformer 230V/110V
The transformer is used to lower AC 230 V to AC 110 V or to increase the AC voltage. Its construction is based on modern components. The casing is metal, black, has a...
Index: HUR-15232
Index: HUR-15232
Step-Up/Step-Down Voltage Regulator S13V20F5 - 5V 2A - Pololu 4085
A compact step-up / step-down voltage converter with 5 V output voltage and 2 A current capacity. The module can be supplied with voltage from 2.8 V to 22 V. Step-up /...
Index: PLL-21019
Index: PLL-21019
Step-Up/Step-Down Voltage Regulator S13V25F7 - 7V 2,5A - Pololu 4982
The Pololu S13V25F7 step-up / step-down converter is a device that converts an input voltage from 2.8 V to 22 V into a stable output voltage of 7.5 V. It also has a number...
Index: PLL-23468
Index: PLL-23468
Step-Up/Step-Down Voltage Regulator S13V25F9 - 9V 2,5A - Pololu 4983
The Pololu S13V25F9 converter is a device for efficient conversion of input voltage from 2.8 V to 22 V into a stable 9 V. It offers efficiency ranging from 85% to 95% and...
Index: PLL-23469
Index: PLL-23469
Step-Up/Step-Down Voltage Regulator S9V11MA - 2,5-9V 1,5A - Pololu 2869
Miniature boost converter module supplied with voltage from 3 V to 16 V . Output voltage adjustable from 2,5 V to 9 V. Maximum current 1,5 A. Dimensions: 15 x 13 x 6 mm....
Index: PLL-10672
Index: PLL-10672
Step-Up/Step-Down Voltage Regulator S13V10F5 - 5V 1A - Pololu 4083
Step-up / step-down voltage converter with 5 V output voltage and 1 A current capacity. The input voltage range is 2.8 V to 22 V . This type of inverter makes it...
Index: PLL-21022
Index: PLL-21022
Step-Up/Step-Down Voltage Regulator S13V10F5 - 5V 1A - with headers - Pololu 4083
Step-up / step-down voltage converter Pololu S13V10F5 with soldered male goldpin connectors. The output voltage of the converter is 5 V, and its current efficiency is 1 A....
Index: PLL-21751
Index: PLL-21751
Step-Up/Step-Down Voltage Regulator S7V8A - 2,5-8V 1A - Pololu 2118
A small pulse inverter module. Input voltage 2.7 V to 11.8 V . Adjustable output voltage of the range: 2.5 V TO 8 V. Maximum output current 1 A.
Index: PLL-01255
Index: PLL-01255
Step-Up/Step-Down Voltage Regulator S18V20F5 - 5V 2A - Pololu 2574
Step-up/step-down converter with 5 V output voltage. Maximum current 2 A . Power supply 3 V - 30 V.
Index: PLL-02098
Index: PLL-02098
Step-Up/Step-Down Voltage Regulator S9V11F5 - 5V 1,5A - Pololu 2836
Miniature boost converter module supplied with voltage from 2 V to 16 V. The output voltage is set to 5 V. Maximum current 1,5 A. Dimensions: 8 x 12 x 4 mm.
Index: PLL-08738
Index: PLL-08738
Step-Up/Step-Down Voltage Regulator S13V25F3 - 3,3V 2,5A - Pololu 4980
The Pololu S13V25F3 converter is a step-up/step-down device that effectively converts input voltages from 2.8 V to 22 V , producing a stable 3.3 V with an efficiency...
Index: PLL-23466
Index: PLL-23466
Step-Up/Step-Down Voltage Regulator S13V25F6 - 6V 2,5A - Pololu 4981
The Pololu S13V25F6 converter is a device that transforms the input voltage in the range from 2.8 V to 22 V into a stable 6 V. It is compact, efficient and provides a wide...
Index: PLL-23467
Index: PLL-23467
S8V9F5 - step-up/step-down inverter - 5V 1.5A - Pololu 4965
The Pololu S8V9F5 converter is a device designed to effectively convert the input voltage from 1.4 V to 16 V into a stable 5 V at the output. It has compact dimensions...
Index: PLL-23804
Index: PLL-23804
Step-Up/Step-Down Voltage Regulator S13V25F15 - 15V 2,5A - Pololu 4985
The Pololu S13V25F15 converter is a device designed to effectively convert input voltage in the range from 2.8 V to 22 V in order to achieve a stable output voltage of 15...
Index: PLL-23471
Index: PLL-23471
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Step-Up/Step-Down Voltage Regulator S7V8F5 - 5V 1A - Pololu 2123
Pulse inverter module. Input voltage 2.7 V to 11.8 V . Output voltage: 5 V. Maximum output current 1 A. Dimensions: 11.5 x 16.5 x 2.54 mm
Index: PLL-01428
Index: PLL-01428
See also
What is a step-up/step-down converter and how does it work?
The step-up / step-down converter is a power electronic converter based on the buck-boost topology and converts the DC voltage from the power source into DC voltage for the receiver with a lower or higher value than the input voltage supplied by the source. The working elements of buck-boost converters include semiconductor switching elements in the form of a diode and a transistor key, capacitors and/or energy storage coils and anti-interference filters. When the switching transistor begins to conduct, a voltage is applied from the source to the coil, and the diode connected with the anode to the receiver receives a higher potential at the cathode, which is equivalent to its transition to the reverse state. When the switching transistor is turned off, the voltage across the coil drops and causes a change in the coil's magnetic flux, which causes current to flow to the receiver and a parallel voltage-holding capacitor connected to it. The transistor key is controlled by a square wave signal with variable duty cycle (PWM). The design and the mathematical apparatus describing it show that the output voltage in a converter in a buck-boost topology depends on the width of the control pulse in a proportional and disproportionate manner. This type of step up/step down converters will be useful in every workshop.
High-quality Polou impulse converters
The S9V11X family of pulse converters from Polou is based on the Buck-Boost topology, which enables the conversion of the input voltage into a lower or higher voltage at the converter output. The supply voltage range includes values from 2.0V to 16.0V and they can be increased or decreased accordingly depending on the converter model. The efficiency of the converters is above 85% and the maximum output current is 1.5A. The flexible supply voltage range allows the S9V11X family of impulse converters to be used in battery-powered devices where the battery voltage is higher than that set at the converter output, and when it drops below this value, further operation of the powered device is possible. The S9V11X family of impulse converters are available in the Botland store in various output voltage variants, both in the version with a fixed output voltage and in the version with adjustable output voltage between 2.5V and 9.0V, adjustable using a 12-turn potentiometer. Built-in undervoltage protection prevents excessive battery discharge, and short-circuit and overload protection protects the system against damage.
Step-up / step-down converters - FAQ
You can build a voltage boosting converter yourself using one of many integrated impulse controllers available on the market. However, appropriate design and calculation of the converter is not an easy task, so it is worth choosing one of the ready-made power modules available in our store.
The principle of operation of a pulse voltage boosting converter is based on fast switching of a coil (choke), in which - as a result of changes in current intensity - a voltage is induced that "adds" to the system's supply voltage - appropriate selection of the control signal duty cycle allows obtaining the desired output voltage.
The classic, simplest step-down converter has a series choke connected between the output and the transistor switch, controlled by the PWM signal from the integrated controller. Between the key and the choke, the cathode of the Schottky diode is also turned on, the anode of which is connected to the ground of the system. Capacitors that smooth the voltage waveform are also an essential element of the converter.