600W Adjustable Step-Down DC Power Supply Module 25-120V to 1.2-75V

600W High Power Adjustable Step-Down Power Supply Module

Take full control of your DC power conversion with this robust 600W adjustable step-down power supply module. Designed for electronics enthusiasts, engineers, and DIY builders, this buck converter board accepts a wide input voltage range of DC 25–120V and steps it down to a fully adjustable DC 1.2–75V output — all with a real-time voltage and current display for precise monitoring at a glance.

Whether you're powering motors, charging battery packs, testing circuits, or building custom power systems, this module delivers reliable, high-current performance in a compact board format. Made in Mainland China.

Key Features

• Wide Input Range: DC 25V–120V input accommodates diverse power sources
• Adjustable Output: DC 1.2V–75V continuously adjustable to match your exact needs
• High Current Capacity: Up to 20A maximum output current
• 600W Power Rating: Handles demanding applications — reduce current when operating at large voltage differentials to manage heat
• Live Voltage & Current Display: Built-in digital readout lets you monitor output in real time
• Anti-Backfill Protection: Output end features an anti-backfilling diode to protect your circuit and the module
• Unbalanced Load Protection: Engineered to handle unbalanced load conditions safely
• No Battery Required: Operates directly from your DC input source

Specifications

What's in the Box

• 1× 600W Adjustable Step-Down Power Supply Module

Important Notes

• Color may vary slightly from product images due to lighting and screen differences.
• Please allow 1mm–1cm dimensional tolerance due to manual measurement.
• When operating at large voltage differentials or high voltages, reduce output current to maintain safe operating temperatures. Adequate cooling/heatsinking is recommended for sustained high-power use.

For guidance on electrical safety and working with DC power systems, refer to the OSHA Electrical Safety Guidelines.

Frequently Asked Questions

Q: What is the input voltage range for this step-down power supply module?

A: This buck converter module accepts an input voltage of DC 25V to 120V, making it compatible with a wide range of DC power sources including battery banks, solar panels, and regulated bench supplies.

Q: Can I use this 600W power supply module for charging lithium battery packs?

A: Yes, because the output voltage is continuously adjustable from DC 1.2V to 75V and the current can reach up to 20A, it can be configured for charging various battery packs when paired with appropriate charge control circuitry. Always verify voltage and current settings before connecting sensitive loads.

Q: Does this module need any cooling or heatsink?

A: At full 600W operation — especially at large input-to-output voltage differentials — the module generates significant heat. It is strongly recommended to use an external heatsink or active cooling fan, and to derate the output current when the voltage difference is large to keep the module within safe operating temperatures.

Q: What does the anti-backfilling diode do?

A: The anti-backfilling diode on the output side prevents reverse current from flowing back into the module from the load (for example, from a battery or capacitive load). This protects both the module and connected components from potential damage due to reverse voltage.