DC-DC Step-Down Converter 12V 10A 120W | 20–90V Wide Input

DC-DC Step-Down Converter — 12V Output, 10A, 120W | 20–90V Wide Input Range

Convert high-voltage DC power to a stable, clean 12V output with this compact and rugged step-down (buck) converter. Designed for automotive systems, railway signals, instrumentation, LED displays, CATV, and more, this converter handles a wide 20V–90V input range and delivers up to 10A (120W) of reliable power wherever you need it.

Made in Mainland China.

Key Features

• Wide Input Voltage Range: Accepts 20V–90V DC input (compatible with 24V, 36V, 48V, 60V, and 72V nominal systems), outputting a steady 12V DC at up to 10A.
• High Efficiency Synchronous Rectification: Achieves ≥95% conversion efficiency, minimising heat buildup and energy waste. Ripple noise is suppressed below 50mV for a clean, stable output.
• Fast Startup: Powers up in ≤2 seconds for reliable, uninterrupted operation in demanding environments.
• Multi-Layer Protection System: Built-in safeguards include short-circuit protection, overcurrent protection, overvoltage protection, and overtemperature protection for maximum equipment and user safety.
• IP68 Waterproof Rating: Rugged aluminium shell with IP68-rated durability handles harsh operating environments, moisture, and dust with ease.
• Natural Cooling Design: No fan required — passive aluminium shell dissipates heat quietly and efficiently.
• Compact & Lightweight: Measures just 74 × 74 × 32 mm and weighs approximately 280g, making it easy to install in tight spaces.

Specifications

Typical Applications

• Automotive and vehicle electrical systems
• Railway signalling equipment
• Industrial instrumentation and control panels
• LED lighting strips and display systems
• CATV and broadcast equipment
• Off-grid and solar power systems
• Marine and RV DC power networks

Package Contents

• 1 × DC-DC Step-Down Power Converter (12V, 10A, 120W)

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Note: Actual colour may vary slightly from images due to monitor calibration and lighting. Please allow minor measurement deviations (±2–3mm).

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Frequently Asked Questions

Q: What input voltage range does this DC-DC step-down converter support?

A: This converter supports a wide DC input voltage range of 20V to 90V, making it compatible with common nominal voltages including 24V, 36V, 48V, 60V, and 72V DC systems. It is ideal for automotive, industrial, and off-grid applications.

Q: What is the output voltage and maximum current of this buck converter?

A: The output is a fixed 12V DC at up to 10A, for a maximum continuous output power of 120W. This makes it suitable for powering 12V devices from higher-voltage DC sources without battery or inverter complexity.

Q: Is this step-down converter waterproof? Can it be used outdoors or in harsh environments?

A: Yes. The converter carries an IP68 waterproof rating, meaning it is dust-tight and protected against sustained water immersion. Combined with its aluminium alloy casing and -25°C to +80°C operating temperature range, it is well-suited to outdoor, automotive, marine, and industrial environments.

Q: Does this converter require a cooling fan?

A: No. This unit uses a natural (passive) cooling design — the aluminium housing dissipates heat without any fan. This results in silent operation and eliminates the risk of fan-related failures, making it especially reliable in enclosed installations.

Q: What protection features are built into this DC-DC converter?

A: The converter includes multiple built-in protection functions: short-circuit protection, overcurrent protection, overvoltage protection, and overtemperature protection. These safeguards help protect both the converter and connected equipment from damage under fault conditions.