DC-DC Buck Converter 10-100V to 5V/9V/12V/24V 3A Step-Down Module
DC-DC Buck Converter 10-100V to 5V/9V/12V/24V 3A Step-Down Module
DC-DC Step-Down Buck Converter Power Supply Module
Bring reliable, efficient power conversion to your electronics projects with this compact DC-DC Step-Down (Buck) Power Supply Module. Designed for makers, engineers, and hobbyists, this board accepts a wide input range of DC 10–100V and delivers a stable fixed output of DC 5V, 9V, 12V, or 24V at up to 3A — making it ideal for automotive systems, solar setups, industrial automation, and DIY electronics. Made in Mainland China.
Key Features
- Wide Input Range: Accepts DC 10V to 100V, compatible with a broad variety of power sources including 12V/24V/48V vehicle systems and high-voltage DC rails.
- Fixed Output Options: Select from DC 5V, 9V, 12V, or 24V output — perfectly suited for powering microcontrollers, sensors, LED strips, USB devices, and more.
- High Conversion Efficiency: Achieves up to 95% efficiency with an optimized switching design, minimizing heat generation and energy loss.
- Low Ripple Output: Advanced circuit design reduces output ripple for stable, clean power delivery to sensitive electronics.
- Built-In Over-Temperature Protection: Integrated thermal protection automatically shuts the module down if temperatures exceed safe operating limits, protecting both the board and connected devices.
- Short-Circuit Protection: On-board output fuse and TVS (Transient Voltage Suppressor) guard against accidental short circuits and voltage spikes.
- Ultra-Compact Design: Miniaturized, highly integrated PCB fits easily into tight enclosures and project builds.
Specifications
| Input Voltage | DC 10V – 100V |
| Output Voltage | DC 5V / 9V / 12V / 24V (fixed) |
| Maximum Output Current | 3A |
| Static Current | 0.5mA |
| Conversion Efficiency | Up to 95% |
| Operating Temperature | -40°C to +85°C |
| Protection Features | Over-temperature, short-circuit, output fuse, TVS |
| Origin | Made in Mainland China |
What's in the Box
- 1× DC-DC Step-Down Buck Power Supply Module
Note: Due to lighting and screen variation, the actual color may differ slightly from product images. Please allow ±1mm–1cm tolerance due to manual measurement.
For general electrical safety guidance when working with power supply circuits, refer to the OSHA Electrical Safety Resource.
Frequently Asked Questions
Q: What input voltage range does this DC-DC buck converter module support?
A: This step-down power supply module supports a wide input voltage range of DC 10V to 100V, making it compatible with a variety of power sources including 12V car batteries, 24V industrial supplies, 48V solar systems, and other high-voltage DC rails up to 100V.
Q: What are the available fixed output voltages for this buck converter board?
A: The module is available in fixed output options of DC 5V, 9V, 12V, or 24V. Each variant is pre-configured at the factory, so please select the correct output voltage for your application at the time of purchase.
Q: What protection features does this power supply module include?
A: This module includes built-in over-temperature protection (automatic shutdown when thermal limits are exceeded), output short-circuit protection, an output fuse, and a TVS (Transient Voltage Suppressor) to protect against voltage spikes — ensuring safe and reliable operation for your connected devices.
Q: Can this buck converter be used in automotive or outdoor applications?
A: Yes. With an operating temperature range of -40°C to +85°C and a wide input voltage range starting at 10V, this module is well-suited for automotive 12V/24V systems and outdoor or industrial environments where temperature extremes may be encountered.