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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.
It is designed with 75V/80A large current dual MOS tube.
Input and output use high frequency low resistance electrolytic capacitor, low ripple, stable output.
Wiring is convenient with these large current 30A screw terminals.
The buck module has 2 heat sink that could enhance heat dissipation.
When there is a big difference between input and output voltage, please decrease power and current.
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"
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
When input and output is common grounded, no-load CV output constant voltage,CC output constant current
1 x 300W 20A DC-DC Adjustable CC CV Buck Step Down Regulator LED Driver Module
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Do not dismiss your dream.
To be without dream is to be without hope.
To be without hope is to be without purpose.
Do not run through your life so fast that you forget not only where you have been, but also where you are
going.
Life is not race, but a journey to be savored each step of the way.
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1. Product quality is guaranteed
2. Easy to use
3. Stable performance
4. Exquisite appearance
5. Wide range of applications
Synchronous rectification is a new technology that uses dedicated power MOSFETs with extremely low on state resistance to replace rectifier diodes and reduce rectification losses. It can greatly improve the efficiency of DC/DC converters and there is no dead zone voltage caused by Schottky barrier voltage. Power MOSFETs belong to voltage controlled devices, and their volt ampere characteristics exhibit a linear relationship when conducting. When using power MOSFETs as rectifiers, it is required that the gate voltage must be synchronized with the phase of the rectified voltage in order to complete the rectification function, hence it is called synchronous rectification. Synchronous rectification technology greatly reduces the rectification losses at the output of switching power supplies, thereby improving conversion efficiency and reducing the heat generated by the power supply itself.
Module nature: Synchronous rectification non isolated voltage reduction constant current constant voltage module CC CV charging module
Input voltage: DC10-40V
Output voltage: continuously adjustable (1.2-32VDC) for a long time below 32V (suitable for applications where the input voltage is higher than the output voltage and cannot be boosted)
Output current: 15A NAX
Constant current range: 0.2-15A (adjustable)
Minimum voltage difference: 3V
Working frequency: 150KHZ
Conversion efficiency: The highest efficiency is about 96%, which is related to pressure difference and usage environment
Output Ripple: Ripple of around 50mV (excluding noise) 20M bandwidth (for reference only) measured at 24V input
Working temperature: -10 ℃ to+75 ℃) (Please pay attention to the temperature of the power tube during actual use. If the temperature is too high, please strengthen heat dissipation or reduce the rating for use)
Potentiometer adjustment direction: clockwise (increase), counterclockwise (decrease)
Output short circuit protection: with (instantaneous protection) constant current (the current set constant current value cannot be short circuited for a long time)
Input reverse protection: None,
Output anti backflow: None, used for loads with built-in electricity or inductive loads that require additional diodes!
Output current regulation method:
1. Adjust the CV potentiometer and set the output voltage to the desired value according to your load requirements.
2. Set the CC potentiometer counterclockwise for about 30 turns (i.e. set the output current to the minimum), connect the LED, and adjust the CC potentiometer to the desired current. Used for battery charging, after discharging the battery, connect it to the output and adjust the CC to the current you need. (When used for charging, be sure to adjust it with the discharged battery, because the more battery remaining, the smaller the charging current.)
Package Include:
1x 300W 15A Constant Current Adjustable Buck Converter Step-Down Module
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On Mar 21, 2026 at 02:10:00 PDT, seller added the following information: