DC-DC Step-Down Converter 9–36V to 5V 3A Dual USB Power Module
DC-DC Step-Down Converter 9–36V to 5V 3A Dual USB Power Module
DC-DC Step-Down Converter with Dual USB Output – 9V/12V/24V/36V to 5V 3A
Power your USB devices anywhere with this compact and reliable DC-DC buck (step-down) converter module. Designed for car charging, solar power systems, and DIY electronics projects, it efficiently converts a wide input voltage range (9V to 36V) down to a stable 5V output with up to 3A of current — perfect for charging smartphones, tablets, and other USB-powered devices on the go.
Whether you're building a solar charging station, retrofitting a vehicle, or working on an electronics project, this regulated power module delivers clean, stable 5V power through two USB ports simultaneously. Its compact 5 × 3.5 cm PCB form factor fits neatly into enclosures and tight spaces.
Key Features
- Wide Input Range: Accepts 9V, 12V, 24V, or 36V DC input — ideal for car batteries, solar panels, and lead-acid systems
- Stable 5V Output: Regulated output voltage of approximately 5V, accounting for charging line loss
- Dual USB Ports: Charge two USB devices simultaneously
- Up to 3A Output Current: Maximum 3A output; stable 2A continuous output without a heatsink
- Compact Design: PCB size of 5 × 3.5 cm — lightweight and easy to integrate
- Voltage Regulated: Built-in regulation circuitry for consistent, safe output
- Broad Applications: Suitable for automotive, solar, marine, and DIY electronics setups
Specifications
| Input Voltage | 9V – 36V DC |
| Output Voltage | ~5V DC |
| Max Output Current | 3A (2A stable without heatsink) |
| Output Ports | 2 × USB |
| Module Size | 5 × 3.5 cm |
| Package Contents | 1 × DC-DC Step-Down Converter Module |
| Country of Origin | Made in Mainland China |
⚠️ Important Safety Notes
- Ensure correct polarity at all times. Reversed polarity will damage the module.
- Do not exceed 36V input voltage — exceeding this limit will cause chip damage.
- Do not touch the sampling resistors or IC components while the circuit is operating, as this may cause output voltage instability and potential damage to connected equipment.
- For continuous output above 2A, attach an appropriate heatsink to the module.
Related Products You May Like
- Electromagnetic Induction Tester – Coil & Circuit Fault Detector
- Air Compressor Pressure Gauge 0-10/0-12/0-25 Bar | DIY Tool
- 360° Bicycle Chain Cleaner Tool | Bike Gear Cleaning Kit
Learn more: ENERGY STAR product efficiency guidance
Frequently Asked Questions
Q: What input voltages does this DC-DC step-down converter support?
A: This buck converter module accepts a wide input voltage range of 9V to 36V DC, making it compatible with common sources such as 12V car batteries, 24V truck systems, and solar panel outputs up to 36V.
Q: Can I use this converter to charge two devices at the same time?
A: Yes! The module features two USB output ports, allowing you to charge two USB devices simultaneously. The total output current is up to 3A (shared across both ports), with a stable continuous rating of 2A when used without an additional heatsink.
Q: Do I need a heatsink for this module?
A: A heatsink is not required for outputs up to 2A continuous. If you need to sustain output current closer to the 3A maximum for extended periods, attaching a suitable heatsink to the module is recommended to maintain stability and protect the components.
Q: Is this module suitable for solar charging applications?
A: Absolutely. The wide 9–36V input range makes this converter an excellent fit for solar power setups, allowing you to step down solar panel or battery voltage to a stable 5V for USB device charging in off-grid or portable energy systems.