Step-down converters are pulse inverters whose operation is based on cyclical connection and disconnection of the coil to the power source. It is an electronic circuit whose task is to lower the input voltage. With a step-down converter, many devices can work properly and operate steadily and for a long time without failure. Step-down converters should have effective protection against excessive temperature and also against excessive voltage. It is thanks to such protection that we can safely use the device and thus work with electronics. Our offer includes step-down converters which differ in technical parameters and size. All of them are equipped with solid protection, which translates into maximum safety of their use. We offer inverters with current capacity from 0,3 A to 15 A. They are equipped with USB sockets, which allows to use the module for charging cell phones.
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Motor driver expansion board X-NUCLEO-IHM08M1 for STM32 Nucleo
Index: FAR-15166
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Converters step-down
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Step-down Voltage Inverter LM2596 - 3,2V-35V 3A
Module with pulse inverter step-down LM2596. Input voltage from 3.2 V to 35 V. Maximum continuous output current of 3 A. The output voltage is adjustable from 3.2 V to 35 V.
Index: MOD-02967
Index: MOD-02967
Step-Down Voltage Regulator XL4015 - 1,3V-36V 5A
Module with XL4015 step-down pulse inverter. Input voltage from 3.3 V to 36 V. Maximum continuous output current 5 A. Output voltage adjustable from 1.3 V to 36 V.
Index: MOD-08103
Index: MOD-08103
D-SUN Step-down Voltage Regulator - 1,0V-17V 1,8A
Module with step-down converter. Input voltage from 4.75 V to 23 V. Maximum continuous output current 1,8 A. Output voltage adjustable from 1.0 V to 17 V.
Index: MOD-08229
Index: MOD-08229
Step-Down Voltage Regulator with Display LM2596 - 3.2V-35V 3A
LM2596 step-down converter module. Input voltage from 3.2 V to 40 V. Maximum continuous output current 3 A. Output voltage adjustable from 3.2 V to 35 V. Built-in display shows...
Index: MOD-04871
Index: MOD-04871
Step-Down Voltage Regulator D24V5F5 - 5V 0,5A - Pololu 2843
A step-down pulse inverter module with an efficiency of 80 % - 93 %. Converts the input voltage from 5.1 V to 36 V to an output value of 5.0 V. The maximum continuous current...
Index: PLL-03110
Index: PLL-03110
Hi-Link Power Supply HLK-PM01 100V-240VAC / 5VDC - 0.6A
The HLK-PM01 power supply from Hi-Link converts mains voltage (AC) from 100V to 240V into 5V direct current (DC) with a current capacity of 0.6A. It is ideal for powering...
Index: DNG-10929
Index: DNG-10929
Step-Down Voltage Regulator - adjustable 3,3V - 25V 5A - DFRobot DFR0205
Inverter module for converting input voltage from 3.6 V to 25 V, to output voltage from 3.3 V to 25 V. The current capacity for 5 V is 5 A. The input voltage must be higher...
Index: DFR-15090
Index: DFR-15090
Step-Down Voltage Regulator D24V5F3 - 3,3V 0,5A - Pololu 2842
A step-down pulse inverter module with an efficiency of 80 % - 93 %. Converts the input voltage from 3.4 V to 36 V to an output value of 3.3 V. The maximum continuous current...
Index: PLL-03109
Index: PLL-03109
SparkFun MOSFET Power Switch and Buck Regulator - Low-Side - SparkFun COM-23979
The SparkFun MOSFET Power Switch and Buck Regulator combines two functionalities - it works as a step-down regulator and a low-voltage switch at the same time. It is...
Index: SPF-24583
Index: SPF-24583
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Step-Down Voltage Regulator LM3671 - 3.3V 0.6A - Adafruit 2745
A step-down pulse inverter module with an efficiency of 90 % - 95 %. Converts the input voltage from 3.5 V to 5.5 V to an output value of 3.3 V. The maximum continuous current...
Index: ADA-04967
Index: ADA-04967
Step-Down Voltage Converter D24V22F5 - 5V 2,5A - Pololu 2858
Converter, type step down, with an output voltage of 5 V. Maximum current is 2.5 A. The voltage is in the range of 5.3 V to 36 V. Module dimensions - 18 x 18 mm.
Index: PLL-04978
Index: PLL-04978
Hi-Link Power Supply HLK-PM03 100V-240VAC / 3.3VDC - 1A
The HLK-PM03 power supply from Hi-Link converts mains voltage (AC) from 100 V to 240 V into 3.3 V direct current (DC) with a current capacity of 1 A. It is ideal for powering...
Index: DNG-10928
Index: DNG-10928
AP63203 - step-down BabyBuck voltage regulator - 3,3V 2A - SparkFun COM-18357
Step-down converter , made by SparkFun. The AP63203 voltage regulator changes the input voltage from 3.8 V to 32 V to the output: 3,3 V . The current capacity of the...
Index: SPF-20235
Index: SPF-20235
Step-Down Voltage Converter D36V28F5 - 5V 3,2A - Pololu 3782
Step-down converter with 5 V output voltage and capacity from 2.5 A to 4 A , typical 3.2 A. Powered from 5.3 V to 50 V. The board dimensions are 20 x 18 mm.
Index: PLL-17169
Index: PLL-17169
D30V30F12 - step-down inverter - 12V 2,8A - Pololu 4896
Pololu step-down converter module with an output voltage of 12 V and a maximum output current of 2.8 A. This is an advanced system that reduces the input voltage in the...
Index: PLL-24070
Index: PLL-24070
SparkFun BabyBuck Regulator Breakout - step-down 5V 3A - AP63357 - SparkFun COM-21256
The step-down converter in the BabyBuck version equipped with the AP63357 voltage regulator by Diodes Inc. Using it, you can convert the input voltage in the range from 6 V...
Index: SPF-22681
Index: SPF-22681
Step-Down Voltage Regulator D24V90F5 - 5V 9A - Pololu 2866
Step-down converter module with 80 % - 95 % efficiency. It converts an input voltage from 5 V to 38 V into a 5 V output value. The maximum continuous current is 9 A.
Index: PLL-02580
Index: PLL-02580
Step-Down Voltage Regulator D24V22F3 - 3,3V 2,6A - Pololu 2857
Step-down converter with 3.3 V output voltage. The maximum current is 2.6 A. The supply voltage is in the wide range from 4 V to 36 V. The module dimensions are 18 x 18 mm.
Index: PLL-04977
Index: PLL-04977
Step-Down Voltage Converter D36V28F12 - 12V 2,4A - Pololu 3786
Small step-down converter with 12 V output voltage and 2.4 A current capacity. Powered by 12.9 V to 50 V . The module dimensions are 20 x 18 mm.
Index: PLL-17175
Index: PLL-17175
D30V30F9 - step-down inverter - 9V 2,9A - Pololu 4895
A small step-down voltage converter with an output voltage of 9 V and a current efficiency of 2.9 A. The module is powered by a voltage ranging from 9 V to 45 V. The...
Index: PLL-24071
Index: PLL-24071
Step-Down Voltage Regulator D24V22F7 - 7,5V 2,4A - Pololu 2860
Step-down converter with 7.5 V output voltage. The maximum current is 2.4 A. The supply voltage is in the wide range from 8 V to 36 V. The module dimensions are 18 x 18 mm.
Index: PLL-04980
Index: PLL-04980
Step-Down Voltage Regulator D36V50F5 - 5V 8A - Pololu 4091
A step-down converter with a 5 V output voltage , operates on an input voltage in the range from 5.5 V to 50 V. The current capacity is 3.5 to 8 A.
Index: PLL-16392
Index: PLL-16392
D30V30F15 - step-down inverter - 15V 2,7A - Pololu 4897
Pololu step-down converter module with an output voltage of 15 V and efficiency of 2.7 A. This is an advanced system that reduces the input voltage from 15 V to 45 V....
Index: PLL-24069
Index: PLL-24069
Step-Down Voltage Regulator D24V3F5 - 5V 0,3A - Pololu 2098
Step-down converter with 5 V output voltage. Maximum current up to 300 mA. Supply voltage in the range of 6 V - 42 V.
Index: PLL-01331
Index: PLL-01331
See also
Stabilizers and converters.
Step-down converters that you can get in our Botland store are an alternative to linear stabilizers with much greater capabilities. Linear stabilizers are used to maintain a constant output voltage by using an additional element, usually a transistor. The regulatory system monitors the output voltage and, if necessary, corrects the voltage, which allows for no disturbances in the power supply, all at a low purchase cost and simplicity of operation, but not without drawbacks. The surpluses are converted into heat and it is not possible to change the voltage, which is where an alternative comes in the form of step-down converters.
Principle of operation of step down converters
Pulse converters work on a simple principle: the electronic system contains a coil that is cyclically connected to the power source. If the voltage in it is added to the input, it is a voltage-boosting system, otherwise it is a voltage-lowering system. However, there is a problem with such systems, namely the coil requires charging with current. During charging, the receiver connected to the output cannot be powered. To avoid output voltage fluctuations, a capacitor is used as a filter. Despite this, this solution is not perfect, the output voltage always fluctuates. Excessive interference may cause the entire system to malfunction.
Application of converters.
Step-down converters are used to convert DC voltage, which they do with high efficiency due to low power losses. This makes the converters perfect for battery-powered systems. Stabilizers convert excess voltage into heat, and converters, thanks to their high efficiency, heat up almost imperceptibly. It must be remembered that raising the voltage is usually less efficient than lowering it, so it is better to have a high supply voltage and lower it than too low and raise it.
Step-down converters - FAQ
Small, modular step-down converters mounted directly on the device's printed circuit board or connected to it via cables are perfect for small systems with relatively low power consumption - we especially recommend Pololu products. In the case of high-power devices, it is worth choosing modules in housings with a heat sink, e.g. AZO Digital PE-16 24/13.8V 150W.
The heart of the step-down pulse converter is an electronic controller that controls the switching of the output transistor. An element necessary for the operation of the system is also a choke (coil) or a transformer, whose task is to store and release electrical energy in the rhythm of the operation of the keying element.