DC-DC Step-Down Buck Converter Module — 9–120V to 5V / 12V, 3A, 96% Efficiency, with Heat Sink

DC-DC Step-Down Buck Converter Module — 9–120V Input to 5V / 12V, 3A

This high-voltage DC-DC step-down module accepts a wide input range of 9–120V DC and converts it to a stable 5V or 12V output at up to 3A. With 96% conversion efficiency, built-in overvoltage, over-temperature, and short-circuit protection, and an included heat sink, it is designed for demanding applications including industrial power conversion, solar systems, and high-voltage battery pack regulation.

Key Specifications

Parameter	Value
Input Voltage	9V – 120V DC
Output Voltage	5V or 12V (fixed, variant dependent)
Max Output Current	3A
Efficiency	Up to 96%
Switching Frequency	140kHz
Soft Start	Yes
Operating Temperature	-40°C to +85°C
Protections	Overvoltage, over-temperature, short circuit
Heat Sink	Included
Dimensions	42 × 30 × 17mm (20mm with heat sink)

Why Choose This High-Voltage Buck Module?

• ✅ 9–120V input range — handles high-voltage DC sources including 48V, 72V, 96V battery packs
• ✅ 96% efficiency — minimal heat at full load, extended component life
• ✅ Triple protection — OVP, OTP, and short-circuit protection for safe unattended operation
• ✅ Soft-start — prevents inrush current damage to load and source
• ✅ Heat sink included — ready for continuous 3A operation
• ✅ Compact 42×30mm PCB — easy to integrate into enclosures

Typical Applications

• High-voltage battery pack (48V/72V/96V) to 5V/12V conversion
• Solar panel output regulation to USB 5V
• Industrial 48V DC bus to 5V logic power
• Electric vehicle auxiliary power supply
• LED driver from high-voltage DC source
• Arduino / Raspberry Pi power from high-voltage systems

Package Contents

• 1 × DC-DC Step-Down Buck Converter Module (with heat sink)

Note: No reverse polarity protection. Ensure correct polarity before connecting.

Enjoy free standard shipping on all orders over $199 USD. Orders are processed within 1–2 business days.

Not satisfied? Return any item within 90 days of purchase for a full refund or exchange. Items must be in original condition.

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