10A DC-DC Step-down Adjustable Constant Voltage Module

(13 customer reviews)

Out of stock

Approx Restocking Date: 30th September, 2023
SKU: 405535


1. High-power LED driver.
2. Lithium battery(or lead accumulator) charge.
3. Vehicle-mounted power supply.
4. Low voltage system power supply.
5. 6V, 12V, 14V, 24V battery charge.
6. On-board laptop power supply.
7. regulated power supply.
8.Low voltage power supply system


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Out of stock

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Brand: Generic
Category: Buck Converter

The 10A DC-DC Step-down Adjustable Constant Voltage Module can be used to get adjustable output voltage ranges from 1.5V to 35V. The module provides a wide range of current output up to 10 A. With heat sink mounted it can easily manage to run high power application continuously (provided that for continuous high power output you need to use a cooling fan on the heat sink).

The Module is made from a dedicated benchmark IC and high-precision current sensing resistor, proving a more stable constant current, (when 20°C to 100°C constant current 1A, temperature drift less than 1%); and therefore it is particularly most suitable for LED driver applications. The output current of the module can be raised up to 10A(for continuous use it is recommended up to 8A with additional cooling fan).

To enhance the stabilization in output voltage has four high-frequency capacitance which gives the lower output ripple. Double heat sink design provides easy and fast heat dissipation. MOS Schottky diode independent heat sink, which heat dissipation is good, and won’t affect each other. Also using large size Sendust Core and double pure copper wiring, improve working efficiency, reduce fever.

The module has onboard 3296 multiturn potentiometers for high accuracy voltage and current regulation to provide good stability. As voltage and current are adjustable, it gives very easy to use at multiple Application such as battery charging, LED Driver power supply, Vehicle Power Supply, etc which makes the module Multipurposeand hence this module is always in demand from our maker because of its wide range of application and low cost.


1. High-power LED driver.
2. Lithium battery(or lead accumulator) charge.
3. Vehicle-mounted power supply.
4. Low voltage system power supply.
5. 6V, 12V, 14V, 24V battery charge.
6. On-board laptop power supply.
7. regulated power supply.
8.Low voltage power supply system.

Note: If the module temperature exceeds 65ºC, please add a cooling fan,  (It be used at room temperature without a fan)

How to do the Module adjustment:
  1. When the module output voltage cannot be adjusted (the output voltage is always equal to the input voltage) Please adjust the potentiometer counterclockwise 20 laps (20 turns) or more till it works.?
  3. When adjusting the blue potentiometer, please use a multimeter to monitor the voltage
  4. The trimmer nearest the voltage output adjusts the output CURRENT (CC)
  5. The trimmer nearest the voltage input adjusts the output VOLTAGE (CV)
Charger application instructions:
  1. First, determine the float voltage and charging current required by the battery to be charged (the ‘target battery). The target battery disconnected from the module output, apply a voltage of 7V – 32V to the module input, being sure to observe correct polarity.
  2. Using the CV trimmer, adjust the output voltage to about 5V.
  3. Switch your multimeter into its 10A current scale and measure the modules short-circuit output current. Turn the CC trimmer to.
  4. adjust the current to the charging current required by the target battery.
  5. Using the CV trimmer, adjust the modules output voltage to the float voltage required by the target battery.
  6. Connect the target battery to the module output, observing correct polarity. Charging of the battery should commence.
Constant current LED Driver Application Instructions:
  1. First, determine the operating current and maximum operating voltage of the LED you need to drive.
    With the CV trimmer, adjust the output voltage to about 5V.
  2. Adjust the current to the operating current of your LED.
  3. adjust the CV trimmer to make the output voltage reach the maximum LED operating voltage.
  4. Connect LED, test.


  1. Scope: High-power LED constant current driver, rechargeable lithium batteries 4V, 6V, 12V, 14V, 24V battery charging; nickel-cadmium nickel-metal hydride batteries (battery) charging, solar panels, wind generators.
  2. Output voltage: continuously adjustable (1.25-35V) (applied to the input voltage is higher than the output voltage applications can boost).
  3. Turn lights Current: current value * (0.1), turn the lamp current and constant value linkage, such as the constant value of 3A.
  4. Turn the lamp current is set to a constant current of 0.1 times (0.1 x 3A = 0.3A), when the constant 2A, when adjusted to the current value, then turn the lamp current constant current of 0.1 times (0.1 x 2A = 0.2A).
  5. This version is a fixed 0.1 times (actually turn the lamp current value is probably not very accurate) is full of instructions for charging.
  6. Minimum pressure: 1V.
  7. Output Ripple: about the ripple 50mV (without noise) 20M bandwidth (for reference) Input 24V Output 12V 5A measured.
  8. Operating temperature: -40 ℃ to + 85 ℃ (please note the actual use of the power tube temperature, the temperature is too high, please enhance heat dissipation).

Package Includes:

1 x 10A DC-DC Step-down Adjustable Constant Voltage Module.

SKU: 405535 Category:
Input Supply voltage (V)

7 ~ 40

Output voltage (V)

continuously adjustable (1.25 ~ 35)

Output Current (A)

8A (10A maximum)

Conversion efficiency:


Operating frequency (KHz)


No-load current

Typical 20mA

Load regulation

± 1%

Voltage Regulation

± 1%

Length (mm)


Width (mm)


Height (mm)


Weight (gm)


Shipment Weight

0.075 kg

Shipment Dimensions

9 × 6 × 4 cm

15 Days Warranty

This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects.  Reimbursement or replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

Based on 13 reviews

4.7 overall

Add a review

  1. NARENDRA KUMAR NEGI (verified owner)

    Excellent product. Tested and found perfect.


  2. Sandip halder (verified owner)

    Quality products only😃

    Sandip halder

  3. Sandip halder (verified owner)

    Very good quality 😃

    Sandip halder

  4. onkarruikar (verified owner)

    7002 mosfet was missing from the circuit, so the red current LED never glowed. All capacitors were off by ~100uF. 🙁


  5. adilahmed786.akhan (verified owner)

    No thermal insulation pad/thermal paste


  6. sadhan biswas

    good product…….

    sadhan biswas

  7. sadhan biswas

    good product …..

    sadhan biswas

  8. adilahmed786.akhan (verified owner)

    no heatsink paste or pad


  9. sg97 (verified owner)

    Made a lab bench power supply with this and a voltage and ammeter combo display!


  10. krishna rajput

    very good and low price product

    krishna rajput

  11. haleshakv (verified owner)

    it’s ultimate guru superb


  12. rajarajangs (verified owner)

    I am using this along with NHP SMPS power supply that produces 24v 10A. The current output or voltage output stays constant after the setting. It can be used for DIY adjustable DC power supply.


  13. kgmdevices (verified owner)

    Fast delivery. Worked as stated. I checked short circuit current of 5A. Perfectly good.


Questions and answers of the customers

  1. 0 votes


    The input voltage can be in betwe... Read more

  2. 1 vote
    Q What is the Maximum Power? Can I connect 100 watt 24 v solars as a input? answer now
    Asked by akshaysutar431 on March 30, 2021 12:04 pm

    Maximum power is 350W, In continuation it is 28... Read more

  3. 1 vote

    no, It doesn't have any protection circuit

  4. 0 votes
    Q Can this step down 7.4V 10400mah battery to 5V 6A ? answer now
    Asked by sohail.alamini on October 2, 2020 2:39 am
    A Its maximum capacity is 10 amp. you can sure use i... Read more
  5. 0 votes
    Q what is minimum current it can deliver at 1.5V?
    Asked by pratheeshkumarjan on September 6, 2020 12:30 am
    There are no answers for this question yet. Answer now
  6. 0 votes
    Q can i input 44 volt ( 24 volt solar panel) ? answer now
    Asked by prabhilal on August 20, 2020 8:04 pm

    It doesn't provide output upto 44V and kindly d... Read more

  7. 0 votes

    You can use BMS (Battery management system) in ... Read more

  8. 1 vote
    Q Can this step down 20V 2A to 10v 3a ? answer now
    Asked by bennur.praveen on March 8, 2020 1:46 am


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Country Of Origin: China