The 10 best buck converter
Finding your suitable buck converter is not easy. You may need consider between hundred or thousand products from many store. In this article, we make a short list of the best buck converter including detail information and customer reviews. Let’s find out which is your favorite one.
Best buck converter
![[8-PACK] LM2596 DC-DC Adjustable Buck Converter 3-40 V to 1.5-35v Step Down Power Supply High Efficiency Voltage Regulator Module](https://images-na.ssl-images-amazon.com/images/I/614uZjI4WNL.jpg)
![[4-PACK] 5A DC-DC Adjustable Buck Converter 4~38v to 1.25-36v Step Down Power Supply High Efficiency Voltage Regulator Module ([4-pack] 5a buck)](https://images-na.ssl-images-amazon.com/images/I/51i3NkJG7mL.jpg)
1. [8-PACK] LM2596 DC-DC Adjustable Buck Converter 3-40 V to 1.5-35v Step Down Power Supply High Efficiency Voltage Regulator Module
Feature
Input voltage rangeDC 3 -40 V (input voltage must be 1.5 V higher than the output voltage, no boost)Output voltage rangeOutput: DC 1.5 - 35 V voltage is continuously adjustable, maximum output current is 3 A
With over-temperature and short-circuit protection, hence it is safe to use.
Easy to make it work and convenient to accurately adjust the output voltage with a mini screwdriver.
100% SATISFICATION SERVICE: If there are any problem with our products, please feel free to contact us. you can request a refund for any single module and no need to return it.; Any problems you can contact us and we will try our best to resolve it till you satisfied.NoteThe factory have tested these at max voltage so they are very high by default, takes about 15-20 turns CCW before the voltage starts ramping down)
Description
Product FeaturesParameters:
Input Voltage: DC 3 -40 V
Output Voltage: DC 1.5 - 35 V
Output Current: 3A(MAX) It is recommended to use under 2A (NOTE: When using high power, add a heat sink to the power supply chip)
Load adjust ratio: +/-0.5%
Voltage adjust ratio: +/-2.5%
Transferring efficiency: 92% Max(the higher output voltage, the higher efficiency)
ON/OFF frequency: 150KHz
Output ripple: 200mV
Module feature: buck and non-isolated
Rectification method: non-synchronous rectification
Size: 5.4x2.3x1.8CM
Weight: 16g
Fuction:
1.Built in over-temperature protection function
2.Built in current limit function
3.Built in output short-circuit protection function
How to use
1.Access the power supply ( 3 -40 V), the power indicator light, the module is working properly.
2.Adjust the blue potentiometer knob (usually clockwise rotation boost, counterclockwise rotation Step-down) and monitor the output voltage with a multimeter to reach the required voltage.
3.A customer reflects the module output voltage can not be adjusted, always equal to the input voltage. When you encounter this problem, please first counterclockwise rotation potentiometer 10 laps above, and then use the module can be normal adjustment of the voltage.
Package includes:
8X LM2596 board
8 pieces of heat sink
2. eBoot 6 Pack LM2596 DC to DC Buck Converter 3.0-40V to 1.5-35V Power Supply Step Down Module
Feature
Input: DC 3 V to 40 V (input voltage must be 1.5 V higher than the output voltage, no boost)Output: DC 1.5 V to 35 V voltage is continuously adjustable, maximum output current is 3 A
Features: all use SANYO solid-state capacitors, 36 u thickening circuit boards, high-Q inductance with LED indicator output
Quantity: 6 pieces; Size: 45 * 20 * 14 mm (with potentiometer)
Steps: connect to power source, adjust the swirl button on the blue potentiometer and monitor voltage with multimeter to get the needed voltage (The factory have tested these at max voltage so they are very high by default, takes about 15-20 turns CCW before the voltage starts ramping down)
Description
eBoot 6 Pack LM2596 DC to DC Buck Converter 3.0-40V to 1.5-35V Power Supply Step Down Module
Features:
Input: DC 3 V to 40 V (input voltage must be 1.5 V higher than the output voltage, no boost)
Output: DC 1.5 V to 35 V voltage is continuously adjustable, maximum output current is 3 A
Notes:
The input and output interface can not be reversed.
Keep it under 2.5 A and use the heat sink when working for long hours.
3. Aideepen 300W 20A CC CV Constant Current Adjustable Buck Converter Step Down Voltage Module
Feature
With a wide input voltage range from 6V to 40V, the step-down converter can accurately adjust output voltage and current.The efficiency can be up to 96%, measured at 20A, converting 24V to 12V.
The buck module has 2 heat sink that could enhance heat dissipation.
It is designed with 75V/80A large current dual MOS tube.Wiring is convenient with these large current 30A screw terminals.
When there is a big difference between input and output voltage, please decrease power and current.
Description
Specifications:Input Voltage: 6V to 40V DC(10V to 40V is suggested)
Output Voltage: 1.2V to 36V DC
Output Current: 20A(max.), 15A(suggested)
Efficiency: 95%(24V to 12V, 20A)
Output Ripple: 50mV
Wiring Method: Terminal
Short Circuit Protection: Self-recovery(cannot short circuit for long time)
Size: 60 x 53 x 27mm / 2.36 x 2.08 x 1.06"
Symbol Instruction:
VO+: Output positive
VO-: Output negative
+IN: Input positive
-IN: Input negative
CV: Output voltage adjustment
CC: Output current adjustment
EN: Enable, low voltage level shut off output; suspension, high voltage level is effective
Attention:
When input and output is common grounded, no-load CV output constant voltage,CC output constant current
Package Include:
1 x 300W 20A Step-Down Module
4. eBoot Mini MP1584EN DC-DC Buck Converter Adjustable Power Supply Module 24V to 12V 9V 5V 3V (6 Pack)
Feature
Mini MP1584EN DC to DC buck converter step-down module with a wide operating rangeInput voltage: 4.5 V to 28 V; Output voltage: 0.8 V to 20 V
Output current: 3 A (maximum); Conversion efficiency: 92% (maximum)
Output ripple: less than 30 mV; Switching frequency: 1.5 MHz (highest), typically 1 MHz
Operating temperature: -45 to 85 ; Size: 22 mm by 17 mm by 4 mm; Warning: donotreversethepositiveandnegativeterminals to avoid any possible damage; Do not use light load (less than 10% of output power) or without load
Description
eBoot Mini MP1584EN DC to DC buck converter adjustable power step down module 24V to 12V 9V 5V 3V, 6 Pack
Specifications:
Input voltage: 4.5 V to 28 V
Output voltage: 0.8 V to 20 V
Output current: 3 A (maximum)
Conversion efficiency: 92% (maximum)
Output ripple: less than 30 mV
Switching frequency: 1.5 MHz (highest), typically 1 MHz
Operating temperature: -45 to 85
Size: 22 mm by 17 mm by 4 mm
Application: DIY mobile power, monitor power supply, power buggies, camera power supply, car power, communications equipment supply,etc.
Package includes:
6 x Mini MP1584EN DC to DC buck converter
You can adjust the voltage by placing a multi-meter on the output, synchronously, using a screw driver to adjust a potentiometer. It can be minute adjustments to achieve a precise voltage.
Kindly reminder
These boards are adjustable current limiting, fixed 3A current limit.
Please make sure that this module within its working range before using.
Please don't output short circuit, otherwise the board would burn out.
When setting the parameter, please make sure output voltage is stable before using the module to avoid any possible damage.
Tips:
Please check if the product package is intact before opening.
Please check if the negative and positive terminals are accessed correctly before operating.
The input voltage should not be over 28 V to avoid damage.
5. 5v Regulator, DROK 5pcs Mini Voltage Reducer DC 4.5-24V 12V 24V Step Down to 5V Buck Converter Board 3A Volt Step-Down Transformer Power Supply Module
Feature
DROK voltage regulator input voltage range is DC 4.5-24V, adjustable range is 0.8-17V, fixed output are 1.8V, 2.5V, 3.3V, 5V, 9V, 12V that can be chosen on the back side. Output current is 3A max (please enhance cooling work when it is full load); when real tested input 12V and output is 1.5A, no need to add special system.Output integrated adjustable and fixed voltage, you can get fixed output voltage by soldering the pot on the board. If the fixed output voltage is not what you want, you can adjust it by potentiometer.
High efficiency and super compact size, high frequency and low ripple, stable working performance, wide range of applications, will be a good component for fixing work.
Strong and high quality construction: imported potentiometer and 3A current chip, high current shielded inductors and MLCC solid capacitance with long service life.
Integrated enable port defaults the working mode and it will be off when it is at low electric level off, which bring a great convenience for users.
Description
Parameters:
Input Voltage: DC 4.5-24V
Output Voltage: Integrated adjustable and fixed output (Adjustable range is 0.8-17V, fixed output are 1.8V, 2.5V, 3.3V, 5V, 9V, 12V that can be chosen on the back side)
Output Current: 3A max (please enhance cooling work when it is full load); When real tested input 12V and output is 1.5A, no need to add special system.
Conversion Efficiency: 97.5% (highest) (6.5V to 5V, 0.7A)
Switch Frequency: 500KHz
Output Ripple: 20mV(12V to 5V, 3A) 20M width
Operating Temperature: -40 ~ +85(Industrial class) (The higher the operation temperature is, the smaller the output power is)
Output Over-voltage Protection: no
Temperature rising range at full load: 40
Static Current: 0.85mA
Voltage Adjustment Rate: 0.5%
Dynamic Response Speed: 5% 200uS
Output Short-circuit Protection: yes, please don't keep making it short-circuit.
Output Reverse Connection Protection: no
Enable Function Control: yes, Low electric level will stop working when high electric level is working. High electric level is 2-5V, low electric level is 0V or so.
Wiring Method: soldering
Input Method: soldering
Output Method: soldering or pins
Welding Hole Spacing: 2.54mm
Package Includes:
5 x mini 5v regulator
6. DROK 180057 LM2596 Analog Control Buck Converter DC-DC 4-32V to 1.25-30V Step-down Regulator Module 24V 12V to 5V 3A Power Inverter Volt Stabilizer with Red LED Display
Feature
Analog Control: adjust the screw on top of the potentiometer clockwise or counterclockwise to increase or decrease the output voltage.Has very stable output, the output range is DC 1.25~30.0V, please note the input voltage should be higher than output voltage at least 2V.
Press the MODE switch, the display will cycle through the output voltage, output current and input voltage.
The output voltage can be turned on/off by the ON/OFF switch, when the output is off, the digital tube will display OFF.
With reversed polarity protection and short circuit protection, more safe to use; the display is very accurate.
Description
Parameters:Input Voltage Range: 4.0V-32.0V
Output Voltage Range: 1.25V-30.0V (buck mode 2V drop)
Maximum Output Current: 3A (peak current)
Continuous Operating Current: 1.5A (total output power within 20W)
Product Weight: 24g
Voltage Measurement Accuracy: (1% + 2 digits)
Current Measurement Accuracy: 2 digits
Product Dimension: 6.0 x 3.4 x 1.3cm (L x W x H)
Features:
Input voltage display
Output voltage display
Output current display
Module switch output
Reverse polarity protection, short circuit protection
Instructions: IN +Input
Positive IN-Input
Negative OUT +Output
Positive OUT-Output Negative
1. ON / OFF button is for controlling the output voltage, press it to alternately turn on or off the output, and it will automatically memorize the default switch status.
When the output is off, the digital tube will display OFF.
2. MODE button is for mode control, press it to circularly display output voltage, output current, input voltage, and it will automatically memorize the default display mode.
Package Includes: 1 x Buck Converter
7. [4-PACK] 5A DC-DC Adjustable Buck Converter 4~38v to 1.25-36v Step Down Power Supply High Efficiency Voltage Regulator Module ([4-pack] 5a buck)
Feature
Input voltage range438V (Note:input voltage not over 38V)Output voltage range1.25-36VDC adjustable.Output current: 0-5A,Output power: 75W
High conversion efficiency up to 96%
Updated Version: updated from LM2596 and better than it, with reverse voltage protection, over-temperature and short-circuit protection, thus making it much safer to use
100% SATISFICATION SERVICE: If there are any problem with our products, please feel free to contact us. you can request a refund for any single module and no need to return it.; Any problems you can contact us and we will try our best to resolve it till you satisfied.
Description
Product FeaturesThis product is a 180 KHz fixed frequency PWM buck (step-down) DC/DC module,capable of driving a 5A load with high efficiency, low ripple and excellent line and load regulation.
Parameters:
Input Voltage: DC 4-38V, error 0.1V
Output Voltage: DC 1.25V to 36V
Output Current: 5A(MAX) It is recommended to use under 4.5A (NOTE: When using high power, add a heat sink to the power supply chip)
Size: 5.4x2.3x1.8CM
Weight: 16g
Fuction:
1.Built in over-temperature protection function
2.Built in current limit function
3.Built in output short-circuit protection function
How to use
1.Access the power supply (4-38V), the power indicator light, the module is working properly.
2.Adjust the blue potentiometer knob (usually clockwise rotation boost, counterclockwise rotationStep-down) and monitor the output voltage with a multimeter to reach the required voltage.
3.A customer reflects the module output voltage can not be adjusted, always equal to the input voltage. When you encounter this problem, please first counterclockwise rotation potentiometer 10 laps above, and then use the module can be normal adjustment of the voltage.
8. DZS Elec 2PCS LM2596 DC-DC Step Down Variable Volt Regulator Input 3.2V-40V Output 1.25V-35V Adjustable Buck Converter Electronic Voltage Stabilizer Power Supply Module
Feature
The Module Properties: Non-isolated Constant Current and Voltage Of The ModuleRectification:Non-Synchronous Rectification
Input Voltage: 3.2V-41V
The Output Voltage: 1.25V-35V
The Output Current: Rated Current 2A, Maximum 3A (Additional Heat Sink Is Required)
Description
Conversion Efficiency: 92% (The Highest)Switching Frequency: 150KHz
The Output Ripple: 30 mv (Max) 20M Bandwidth
The Load Regulation: 0.5%
Voltage Regulation: 2.5%
Operating Temperature: - 40 to + 85
Size: 43 mmx21mmx14mm
Package includes: 2PCS
9. DZS Elec 12A DC-DC Step Down Buck Converter Low Ripple With Heat Sink 4.5V-30V to 0.8V-30V Vehicular Voltage Regulator
Feature
Module Name: 12A DC Step Down Buck ConverterInput Voltage: 4.5V-30V ; Output Voltage: 0.8V-30V( continuously adjustable ); Output Current: 0A-12A 100W ( Can be up to 200W if enhance heat dissipation )
Short-circuit protection (14A MAX) combined with over-temperature protection (Automatically shut off the output once over temperature), safe and reliable.
Coming with enhanced enhanced aluminum radiator make the work temperature is lower and more stable. 50V/MLCC chip capacitor, combined with high frequency low resistance electrolytic condenser, make the output ripple lower.
TVS tube can effectively prevent surge breakdown voltage, make the work safer and more reliable.
Description
Feature:Module Name: 12A DC Step Down Buck Converter
Module Type: Non-isolated step-down module
Module Size: 60*51*22mm
Input Voltage: 4.5V-30V
Output Voltage: 0.8V-30V ( continuously adjustable )
Output Current: 0A-12A 100W ( Can be up to 200W if enhance heat dissipation )
Work Temperature: -40 degree to + 80 degree
Switching Frequency: 300KHz
Transfer Efficiency: 95% (MAX)
Short-circuit Protection: Yes (Limited current 14A)
Over-temperature Protection: Yes (Automatically shut off the output once over temperature)
Reverse Voltage Protection: NO ( If need, please add large current tube.)
Connection Mode: Terminals or solder terminals. V-IN for input, V-OUT for output
The module has enhanced aluminum radiator and TVS tube, which make sure the work temperature be lower and safer. 50V/MLCC chip capacitor, combined with high frequency low resistance electrolytic condenser, make the output ripple lower.
Suitable for DIY of storage battery, power transformers, adjustable voltage regulator, 24V power supply, LED lights power supplies, industrial equipment step-down etc. and other work requirements. 12V to 3.3V, 12V to 5V, 24V to 5V, 24V to 12V and so on.
Transfer Efficiency test data:
Input 12V, Output 5V/10A, Efficiency 81%
Input 12V, Output 5V/6A, Efficiency 86%
Input 24V, Output 12V/8A, Efficiency 91%
Input 24V, Output 19V/6A, Efficiency 94%
Package Include:
1pcs 12A DC Step Down Buck Converter
10. CC Buck Converter, DROK DC-DC Constant Current & Voltage Regulator Board 5V-36V 24V to 1.25V-32V 17V 12V 5V Step Down Transformer 5A 75W High Power LED CC Driver Module Battery Charge for Solar Panels
Feature
DROK buck converter input voltage range is DC 5V-36V, output voltage range is DC 1.25V-32V continuously adjustable, default output 17V, max output current is 5A(please use it within 4.5A).Equipped with Multimeter: the voltage regulator module is with voltmeter/ammeter/power meter, can be directly used without external multimeter.
Application: our buck converter with over current protect function; battery charger for solar panels, wind driven generator.; high power LED constant current driver module.
With USB Port: the step down converter is with USB port, can be used to charge for digital products.(Note: USB output voltage is the same as the module voltage output, please check before using.)
Constant Current & Constant Voltage Mode: the reducer module is with two kinds of mode: constant current and constant voltage, the indicator light will indicate which mode it is under.
Description
Parameters:Input voltage : 5-36V (the input voltage should at least 1.5V higher than the output voltage)
Output voltage :1.25-32V (continuously adjustable,default output 17V.)
Output Current : 5A MAX(Please use it within 4.5A)
Output Power: Max 75W (Please use it within 50W. if the pressure difference is big,please reduce power)
Operating temperature: -40 to +85 C
Operating frequency: 180KHz
Conversion efficiency : up to 96%
Short circuit protection: Yes
Overtemperature protection: (automatically shut off the output after overtemperature)
Input reverse polarity protection: No, (if necessary, please in input
String into high current diode)
Installation: 4pcs 3mm screws
Wiring:(solder terminals) V-IN is the input, V-OUT is the output
Usage:
1. Use as an ordinary buck module with overcurrent protection capabilities;
2. Use as a battery charger;
3. Use it as a constant current LED driver module.
Note:
1. If the module can not be adjusted, the output voltage is always equal to the input voltage." When you encounter this problem, please counterclockwise rotation of the potentiometer 10 laps or more, then you can adjust the output voltage. Because the factory default output voltage is 17V.
2.Module output terminal string has a current sampling resistor, there will be 0-0.2V voltage drop after connected to the load, it is a normal phenomenon.
3.If its output is more than 3A/35W, please enhance heat dissipation!
4.This DC converter is single output, the output voltage of the USB port is the same as the output voltage of the module, if your load is USB device, please make sure the module's output voltage is set at 5V.
Package include:
1 x Buck Converter
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