# Voltage step-down module, 6-40V, CV-CC, 300W

- Page: https://sigmanortec.ro/en/voltage-step-down-module-6-40v-cv-cc-300w
- Price: 37.17 RON
- Availability: In stock; 1-2 zile
- Reference: 9744 · EAN: 5945803118147
- Category: Electronic components > Step Down Modules
- Specifications: tension: AD; Power: Over 20W; Supply Voltage: 6; Maximum Input Voltage: 40; Minimum Output Voltage: 1; Maximum Output Voltage: 36; Source Type: descend; Current Adjustment: Yes; Voltage Adjustment: Yes; Adjustment Type: Variable; Maximum Output Current: 20; Maximum Controlled Power: 300; Input Voltage Type: “DC” in Romanian can mean **“de ce”**, which translates to **“why”** in English.; Output Voltage Type: “DC” in Romanian can mean **“de ce”**, which translates to **“why”** in English.
- Package (shipping data): 0.066 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 02:21 (Europe/Bucharest)

## Description

DC-DC step-down converter with precise regulation in CV-CC mode, ideal for power supplies and electronic projects that require stable voltage and current limiting. It accepts 6-40V at input and provides 1.2-36V adjustable at output, up to 300W and 20A max. It has high efficiency, dual power MOSFET, screw terminals for quick connections and heat sinks for heat dissipation.
The voltage step-down module, with a capacity of up to 300W and 20A MAXIMUM ( recommended up to 15A ), designed to provide an efficient and precise regulation of voltage and current from an input voltage between 6V and 40VDC to a voltage of adjustable output between 1.2V and 36VDC.
It is equipped with a high-capacity dual MOSFET, 75V/80A, allowing the management of large loads with an efficiency of up to 96%.
It has the ability to maintain a stable output due to the use of high frequency electrolytic capacitors (Low ESR), with low resistance, which minimizes oscillations and ensures a constant and reliable output.
For easy installation, the module includes 30A screw terminals for quick connection. The heat dissipation is effectively managed by two radiators that maximize the elimination of the heat generated during operation.
The module can be turned off or on through the integrated switch, marked ON/OFF.
The two multi-turn potentiometers on the module allow regulation of the maximum voltage and current, the module being a CC and CV type.
It is important to note that, in case of a large difference between the input and output voltage, it is recommended to reduce the power and current to avoid overheating. At least during the commissioning phase, make sure that the module works in the optimal temperature parameters. Overheating the module will cause it to burn.
Specifications:
Input Voltage: 6V - 40VDC (10V - 40V recommended)
Output Voltage: 1.2V at 36VDC
Output Current: Maximum 20A, recommended up to 15A
Efficiency: 95% (for conversion from 24V to 12V at 20A)
Output Ripple: ≤50mV
Connection Method: Screw Terminals
Short Circuit Protection: Self-healing (does not support long-term short circuit)
Adjustments: CV (output voltage adjustment), CC (output current adjustment), EN (enable/disable)
Dimensions: 60 x 53 x 27mm
Use:
Connecting the Power Supply:
Connect +IN to the positive of the power supply and -IN to the negative.
Make sure that the input voltage does not exceed 40V to avoid damaging the module.
Output Adjustment:
Use the CV potentiometer to adjust the desired output voltage.
Adjust the DC potentiometer to set the output current limit, preventing the connected load from being overloaded.
Activating the Module:
Use the ON/OFF switch to turn the module on or off.
Important:
Check regularly that the module does not overheat and that the voltage and current values remain within the set limits.
Do not overload the module. Keep usage below 80% of maximum capacity to ensure reliable and durable operation.
Ensure adequate ventilation and, if necessary, use additional cooling solutions such as active fan cooling.