20A 300W CC CV Buck Converter DC 6-40V to 1.2-36V Step-Down
20A 300W CC CV Buck Converter DC 6-40V to 1.2-36V Step-Down
20A 300W CC CV Step-Down Buck Converter — Adjustable DC 6-40V to 1.2-36V
Meet your go-to power regulation solution: the 20A 300W Constant Current / Constant Voltage (CC CV) Step-Down Buck Converter. Whether you're powering LED drivers, battery chargers, DIY electronics, or lab bench setups, this compact module delivers rock-solid, adjustable DC output you can count on. With a wide input range of 6–40V DC and an output range of 1.2–36V DC, it handles a broad variety of projects with ease.
Key Features
- High Power Output: Up to 300W / 20A continuous output for demanding applications.
- Dual-Mode Regulation: Switch seamlessly between Constant Current (CC) and Constant Voltage (CV) modes for precise, stable power delivery.
- Wide Adjustable Range: Input: DC 6–40V | Output: DC 1.2–36V — versatile enough for most DC power projects.
- Compact & Space-Saving: Measures just 60 × 53 × 27 mm (2.36 × 2.08 × 1.06 in) — big performance in a small footprint.
- DC Motor Compatible: Powered by DC supply; works with DC motor-driven systems and a wide range of electronic loads.
- Stable Power Delivery: Built-in feedback circuitry maintains consistent output even under varying load conditions.
- Easy Integration: Ready to wire into your existing circuit — no complex setup required.
Specifications
| Input Voltage | DC 6–40V |
| Output Voltage | DC 1.2–36V (adjustable) |
| Max Output Current | 20A |
| Max Output Power | 300W |
| Regulation Modes | CC (Constant Current) / CV (Constant Voltage) |
| Power Supply | DC |
| Dimensions | 60 × 53 × 27 mm / 2.36 × 2.08 × 1.06 in |
| Brand | Qme |
Ideal Applications
- DIY electronics & maker projects
- LED strip and LED array drivers
- Lithium-ion / LiPo battery charging systems
- Lab bench variable power supplies
- Motor speed control
- Solar panel output regulation
Why Choose This Buck Converter?
Unlike basic voltage regulators, this module offers true CC+CV dual-mode control — essential for safely charging batteries or driving LEDs without overcurrent risk. The robust 300W design handles serious loads while keeping the form factor impressively compact. It's a smart, reliable upgrade for hobbyists and engineers alike.
For more guidance on safe electrical wiring practices and working with DC power modules, refer to OSHA's Electrical Safety guidelines.
Frequently Asked Questions
Q: What does CC CV mean in this step-down buck converter module?
A: CC stands for Constant Current and CV stands for Constant Voltage. In CC mode, the module maintains a fixed output current regardless of load changes — ideal for battery charging and LED driving. In CV mode, it holds a steady output voltage — perfect for powering electronics that require a specific voltage. This 20A 300W module automatically switches between both modes as needed.
Q: What is the input and output voltage range of this buck converter?
A: This step-down DC converter accepts an input voltage of DC 6V to 40V and provides an adjustable output voltage of DC 1.2V to 36V. Note that the output must always be lower than the input (it is a step-down / buck design, not a boost converter).
Q: How do I connect and use this 300W step-down module?
A: Connect your DC power source (6–40V) to the input terminals and your load to the output terminals. Use the onboard potentiometers to adjust the output voltage and current to your desired levels. Always ensure your wiring is rated for the current you plan to draw, and consider adding a heatsink or fan for sustained high-current operation near the 20A / 300W maximum.
Q: Is a battery included with the module?
A: Yes, a battery is included with this module as noted in the product specifications. The module itself operates on DC power supply and is compatible with DC motor-driven systems.
Q: What size is this step-down converter module?
A: The module measures 60 × 53 × 27 mm (approximately 2.36 × 2.08 × 1.06 inches), making it compact and easy to integrate into enclosures, project boxes, or existing equipment.