DC-DC 10A 250W Adjustable Step Up Constant Current LED Driver Power Supply Module User’s Guide

1. Overview

This module is a non-isolated boost converter designed to step up DC input voltage to a higher output voltage. It supports constant current mode, making it suitable for LED driving, battery charging, and general high-power applications.

• Input Voltage: 8.5V – 48V (some variants allow 5.5V minimum)
• Output Voltage: 10V – 50V (adjustable)
• Output Current: 0.2A – 8A (adjustable, up to 10A peak with cooling)
• Power Rating: 250W max (derated if cooling is insufficient)
• Efficiency: Up to 96%
• Protections: Over-current, reverse polarity

2. Key Features

• Adjustable output voltage via onboard potentiometer.
• Adjustable constant current limit for safe LED or battery charging.
• High efficiency boost design.
• Compact PCB with mounting holes.
• Requires external cooling (heatsink/fan) for sustained high current.

3. Installation & Setup

Step 1: Wiring

• Input terminals: Connect DC source (battery, power supply). Observe polarity.
• Output terminals: Connect load (LEDs, battery, or device).

Step 2: Adjusting Voltage

• Use the voltage adjustment potentiometer to set desired output voltage.
• Measure with a multimeter at the output terminals while adjusting.

Step 3: Adjusting Current

• Use the current adjustment potentiometer to set maximum output current.
• Recommended: Start low, then increase gradually while monitoring load.

4. Safety Guidelines

• Always connect input before output to avoid damage.
• Ensure adequate cooling (heatsink + fan) when operating above 5A.
• Do not exceed 250W total power (e.g., 25V × 10A).
• Avoid short circuits—though the module has protection, repeated shorts can damage it.
• Double-check polarity before powering on.

5. Applications

• LED Driver: Provides constant current to high-power LEDs.
• Battery Charger: Adjustable voltage/current for lithium, lead-acid, or other chemistries.
• Power Supply: Boosts lower DC voltage to higher levels for devices.
• DIY Projects: Robotics, Arduino, and embedded systems needing stable boosted power.

6. Troubleshooting

• No output: Check input polarity and voltage range.
• Overheating: Add heatsink/fan; reduce current.
• Voltage not stable: Ensure input supply can deliver required current.
• Current limit not working: Verify adjustment potentiometer settings.

7. Maintenance

• Keep module clean and dust-free.
• Inspect solder joints and connectors periodically.
• Replace cooling fans if noisy or failing.