USB DC Isolated Buck Converter – Reliable Step Down Power Supply Module

The USB DC Isolated Buck Converter Step Down Power Supply Module is a compact, high-efficiency power conversion solution for electronics projects, DIY builds, and professional applications. Designed to step down higher DC voltages (12V, 24V, 36V, 48V, 72V) to a stable 5V/1A USB output, this isolated module ensures clean, regulated power for your sensitive devices and circuits.

With its isolated design, this buck converter provides galvanic isolation between input and output, protecting your downstream electronics from voltage spikes, noise, and ground loops. The SMD-based construction keeps it compact at just 35mm × 26mm × 15mm — easy to integrate into tight enclosures or custom builds.

Key Features

Wide Input Voltage Range: Compatible with 12V, 24V, 36V, 48V, and 72V DC input sources
Stable 5V/1A USB Output: Delivers consistent, regulated power for USB-powered devices
Galvanic Isolation: Isolated topology protects sensitive electronics from interference and voltage transients
Compact Form Factor: 35mm × 26mm × 15mm SMD design fits easily into custom enclosures and DIY projects
High Efficiency: Buck (step-down) conversion minimizes heat generation and energy waste
Customizable: Available as an isolation transducer variant for tailored applications
Includes: 1× SMD Buck Converter Module

Ideal Applications

Automotive and vehicle USB charging from 12V/24V systems
Industrial control panels and automation equipment
Solar energy systems and battery-powered setups
DIY electronics projects and prototyping
Powering Raspberry Pi, Arduino, and other microcontroller boards

Specifications

Input Voltage: 12V / 24V / 36V / 48V / 72V DC
Output Voltage: 5V DC
Output Current: 1A (max)
Dimensions: 35mm × 26mm × 15mm
Construction: SMD (Surface Mount Device)
Type: Isolated DC-DC Buck Converter

Frequently Asked Questions

Q: What does an isolated USB DC buck converter step down module do?

A: An isolated USB DC buck converter step down module takes a higher DC input voltage (such as 12V, 24V, 36V, 48V, or 72V) and converts it down to a stable 5V/1A USB output. The "isolated" design means there is galvanic separation between the input and output circuits, which protects your connected devices from voltage noise, spikes, and interference — making it ideal for sensitive electronics and professional installations.

Q: What input voltages is this buck converter compatible with?

A: This isolated buck converter step down module supports a wide DC input voltage range including 12V, 24V, 36V, 48V, and 72V, making it versatile for automotive systems, industrial equipment, solar setups, and more — all delivering a regulated 5V/1A USB output.

Q: Is this module suitable for DIY electronics and prototyping projects?

A: Absolutely. The compact SMD design (35mm × 26mm × 15mm) makes this USB DC isolated buck converter easy to integrate into DIY builds, custom enclosures, Arduino or Raspberry Pi projects, and other prototyping applications where reliable, regulated 5V power from a higher-voltage DC source is needed.

Q: Why choose an isolated buck converter over a non-isolated one?

A: An isolated buck converter provides galvanic isolation between the input and output, which prevents ground loops, reduces electrical noise, and shields sensitive downstream components from voltage transients. This is especially important in automotive, industrial, or mixed-signal environments where signal integrity matters.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.