Description
300W 20A CC/CV Step-Down Converter
This 300 W constant-current/constant-voltage (CC/CV) buck converter provides an adjustable 1.2–36 V output from a 6–40 V DC source. It supports up to 20 A (15 A recommended), has an integrated heatsink for continuous operation, and offers efficiency up to 95%.
🔧 Technical specifications
- Input voltage: 6–40 V DC (10–40 V recommended)
- Output voltage: 1.2–36 V DC (adjustable)
- Output current: 0–20 A maximum; 15 A recommended
- Maximum power: 300 W
- Efficiency: up to 95% (24 V to 12 V at 20 A)
- Output ripple: ≤ 50 mV
- Short-circuit protection: automatic recovery
- Cooling: integrated aluminum heatsink
- Dimensions: 60 × 53 × 27 mm
- Connections: screw terminals
💡 Typical applications
- Test benches and laboratory power supplies
- CC/CV battery charging (NiMH, Li-ion, etc.)
- High-power LED control
- DC motor speed control
- DIY projects and prototyping requiring CC/CV
🛠️ Pinout / wiring
| Terminal | Description |
|---|---|
| VIN+ | Positive input (6–40 V DC) |
| VIN– | Negative input (ground) |
| VOUT+ | Positive output (0–36 V DC) |
| VOUT– | Negative output (ground) |
Connect VIN+ / VIN– to the power source and VOUT+ / VOUT– to the load. Adjust output voltage with the module’s “V” potentiometer and the current limit with its “I” potentiometer. Use external voltmeter and ammeter instruments for precise readings.
