DC-DC Buck Converter 5V 12V 24V Step-Down Power Module 6A
DC-DC Buck Converter 5V 12V 24V Step-Down Power Module 6A
DC-DC Step-Down Buck Converter Power Supply Module — 5V / 12V / 24V, 6A
This industrial-grade DC-DC buck converter module delivers stable, regulated output voltages (5V, 12V, or 24V) from a wide input range of 7–38V, with a continuous output of up to 6A. Whether you're powering LED strips, lithium battery charging circuits, embedded electronics, or DIY projects, this compact step-down board offers high efficiency, robust protection features, and reliable performance. Made in Mainland China.
Key Features
- Industrial-Grade Build: High-current PCB design with premium components for durability and consistent performance across demanding applications.
- High-Frequency Low-Resistance Capacitors: Minimizes output voltage ripple and ensures fast dynamic response under varying loads.
- Compact High-Power Design: High-current screw terminals and a low-resistance MOS anti-reverse connection scheme deliver high power in a small footprint with low ripple.
- Up to 95% Conversion Efficiency: Reduces energy loss and heat generation, maximizing power delivery to your load.
- Soft-Start Support: Prevents inrush current surges on startup, protecting sensitive downstream components.
- Anti-Reverse Input Protection: Built-in MOS-based reverse polarity protection guards against accidental mis-wiring.
- Multiple Onboard Protections: Includes input/output TVS protection, output short-circuit protection, over-temperature protection, and an input fuse.
Specifications
| Parameter | Value |
|---|---|
| Input Voltage | 7V – 38V DC |
| Output Voltage | 5V / 12V / 24V (fixed, per model) |
| Max Output Current | 6A (5A recommended for continuous use without extra cooling) |
| Static Current | 1 mA |
| Switching Frequency | 210 kHz |
| Conversion Efficiency | Up to 95% |
| Storage Temperature | -40°C to +85°C |
| Protections | Reverse input, short circuit, TVS, over-temperature, input fuse |
| EU LVD Compliance | Low voltage: Below 50Vac or 75Vdc |
Terminal Definitions
- IN+ — Power input positive pole (7–38V; must exceed output voltage by at least 1V)
- IN− — Power input negative pole
- OUT+ — Regulated output positive pole
- OUT− — Regulated output negative pole
Usage Precautions
- Always ensure input voltage is at least 1V higher than the desired output voltage.
- Disconnect power before making any wiring changes.
- Use adequately rated wiring to handle the current load safely.
- Protect against inductive load back-EMF to prevent chip damage.
- For currents above 4A, ensure adequate ventilation or add a heatsink. Continuous output above 5A (without additional cooling) is not recommended for the 6A model.
Package Includes
- 1× DC-DC Step-Down Buck Converter Power Supply Module
Learn More
For guidance on safe design and use of low-voltage power supply circuits, refer to the U.S. Consumer Product Safety Commission (CPSC) and OSHA Electrical Safety Resources.
Frequently Asked Questions
Q: What is the maximum safe continuous current for this DC-DC buck converter module?
A: While the module is rated for a peak of 6A, it is recommended to keep continuous output current at or below 5A without additional heat dissipation. For sustained 6A operation, ensure the module is mounted in a well-ventilated area or fitted with an external heatsink or cooling fan to prevent over-temperature shutoff.
Q: Can I use this step-down module to charge lithium batteries?
A: Yes. This buck converter board is suitable for use in lithium battery charging circuits when configured with the appropriate output voltage for your battery pack. Always verify your charger circuit's requirements and ensure the input voltage is at least 1V above the target output voltage before connecting.
Q: What input voltage range does this DC-DC step-down module support?
A: This module accepts an input voltage range of 7V to 38V DC. The recommended maximum operating voltage is 38V. Ensure the input always exceeds the output by a minimum of 1V for stable step-down regulation.
Q: Is there protection against wiring mistakes like reverse polarity?
A: Yes. The module features a low-resistance MOS-based anti-reverse connection scheme on the input, along with TVS (transient voltage suppression) protection on both input and output, a short-circuit protection circuit, an input fuse, and integrated over-temperature protection — providing a comprehensive safety net for your build.