DC 12-80V 600W Buck Power Module 20A CC CV Adjustable
DC 12-80V 600W Buck Power Module 20A CC CV Adjustable
DC 12–80V 600W Adjustable Buck Power Module | 20A Constant Current / Constant Voltage Board
Take precise control of your DC power projects with this high-efficiency adjustable buck (step-down) power module. Designed for electronics hobbyists, engineers, and makers, this board delivers continuously adjustable output voltage and current with a convenient built-in digital display — making it easy to dial in exactly the power level your application demands.
Made in Mainland China.
Key Features
- Wide Input Range: Accepts DC 12V–80V input (note: not compatible with 72V battery systems).
- Adjustable Output: Output voltage continuously adjustable from 2.5V to 50V (step-down only; maximum output = input × 0.8).
- High Current Capacity: Rated at 20A continuous, 25A peak — handles up to 600W conversion loads.
- ≥93% Efficiency: High-quality components ensure minimal energy loss and low heat generation.
- Built-in Digital Display: Real-time voltage and current readout — no external meters needed.
- Constant Current & Constant Voltage Modes (CC/CV): Ideal for battery charging, LED drivers, motor control, and bench power supply applications.
- Built-in Protections: Overcurrent protection and anti-reverse protection for safe, reliable operation.
- Wide Operating Temperature: Performs reliably from -40°C to +85°C.
- Compact Form Factor: 125mm × 70mm × 32mm — fits easily into enclosures and DIY builds.
- Easy Wiring: Straightforward screw-terminal connections; simply connect your input and output wires to get started.
Specifications
| Input Voltage | DC 12V – 80V (not compatible with 72V battery) |
| Output Voltage | 2.5V – 50V adjustable (step-down only; max = input × 0.8) |
| Output Current | 20A rated / 25A peak |
| Max Power | 600W |
| Efficiency | ≥ 93% |
| Protection | Overcurrent, anti-reverse |
| Operating Temperature | -40°C to +85°C |
| Storage Temperature | -20°C to +50°C |
| Relative Humidity | 65% ± 20% |
| Dimensions | 125mm × 70mm × 32mm |
| EU LVD Compliance | Below 50Vac or 75Vdc (low voltage) |
What's in the Box
- 1× Adjustable Buck Power Module Board
Wiring Tips
For best performance at high current loads, always use wire gauges rated for the expected current. Use the thickest wire practical on both input and output connections to minimize resistive losses and heat build-up. Ensure your power source is capable of supplying the required current before connecting.
Important Notes
- Step-down (buck) converter only — output voltage must be lower than input voltage.
- Not compatible with 72V battery systems.
- Slight color variation from product images may occur due to lighting and screen differences.
- Allow ±1–10mm dimensional tolerance due to manual measurement.
For general electrical safety standards and best practices when working with DC power modules, refer to the U.S. Consumer Product Safety Commission (CPSC). For workplace wiring and electrical safety guidelines, see OSHA Electrical Safety.
Frequently Asked Questions
Q: Can this adjustable buck power module charge lithium or lead-acid batteries?
A: Yes — because the module supports both Constant Current (CC) and Constant Voltage (CV) modes, it is well suited for charging lithium-ion, LiFePO4, and lead-acid battery packs. Simply set the desired charge voltage and current limit using the onboard potentiometers and verify with the digital display before connecting your battery.
Q: Why is a 72V battery not compatible with this module?
A: While the input voltage range is rated up to 80V, 72V lithium battery packs can spike above 80V at full charge, which may exceed the module's maximum safe input voltage. To protect the module and your application, the manufacturer specifically excludes 72V battery systems from the supported configurations.
Q: What wire gauge should I use for high-current applications near the 20A rating?
A: For continuous loads near 20A, a minimum of 12 AWG wire (or equivalent metric gauge) is generally recommended for short runs. For longer wire runs or near the 25A peak, consider 10 AWG or thicker. Always use wire rated for the temperature and current demands of your specific setup.
Q: Does this power module require a heatsink or cooling fan?
A: At lower power levels the board operates efficiently with minimal heat. For sustained high-power operation (near 600W / 20A), adding an external heatsink to the main switching components or directing airflow across the board with a small fan is strongly recommended to maintain optimal efficiency and long-term reliability.