# Voltage step-down module 400W, 10-60VDC, CC-CV, 15A

> DC-DC step-down module with 10-60VDC input and continuously adjustable 0-45VDC output, CC-CV operation, adjustable current 0.2-15A. Maximum power 400W with active cooling, efficiency up to 97%. Includes short-circuit protection, reverse polarity protection (15A fuse), and CC mode LED indicator. Dimensions: 60 x 60 x 45mm.

- Page: https://sigmanortec.ro/en/voltage-step-down-module-400w-10-60vdc-cc-cv-15a
- Price: 77.62 RON
- Availability: In stock; 1-2 zile
- Reference: 9427 · EAN: 5948970445061
- Category: Electronic components > Step Down Modules
- Specifications: tension: AD; Power: Over 20W; Maximum Input Voltage: 60; Minimum Output Voltage: 0; Maximum Output Voltage: 45; Source Type: descend; Current Adjustment: Yes; Voltage Adjustment: Yes; Adjustment Type: Variable; Maximum Output Current: 15; 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): 0.206 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 02:22 (Europe/Bucharest)

## Description

Step-down DC-DC converter for power supply and battery charging, with continuously adjustable voltage 0-45V and current 0.2-15A in CC-CV mode. Offers up to 400W with active cooling, high efficiency up to 97% and low drop between input and output. Includes short-circuit and reverse polarity protection, plus LED for CC mode.
DC-DC step-down power supply module, from 10-60VDC to 0-45VDC, CC and CV, continuously adjustable current and voltage.
The absolute maximum power is 400W (active cooling on both the radiator and the coil) and the current can be adjusted up to 15A. In normal use, in a ventilated environment, do not exceed the values of 280W and 12A maximum.
The module is efficient, having between 92 and 96% conversion efficiency when the difference between input and output is less than 10V.
It has a CC mode indicator light, which can also be used as a battery charging completion indicator. The module's operation in CC and CV allows charging batteries.
The input has a 15A fuse.
The module has a minimal voltage drop difference between Input and Output. At low voltage (15V) the pressure difference is approximately 3V. At 40V the difference is approximately 6V.
Specifications:
Supply voltage: 10.5 - 60VDC
Output voltage: 0 - 45VDC, continuously adjustable
Input-Output Voltage Difference: 3 - 8V, increasing with voltage
Constant output current: 0.2 - 15A, continuously adjustable
Output current: 12A in ventilated environment
Output power: 280W in ventilated environment
Maximum output current: 15A with forced cooling
Maximum output power: 400W with forced cooling
Standby power consumption: 2.5W
Low voltage protection: below 10.5V the output is off
High voltage protection: NO , above 60V the module burns out
Operating temperature: -10 - +85 degrees C
Operating frequency: 100KHz
Conversion efficiency: up to 97%
Short circuit protection: Yes
Reverse polarity protection: Yes, the fuse blows
DC indicator: Yes, LED
Dimensions mm: 60 x 60 x 45mm