DC-DC Step-Down Voltage Regulator 4–40V 8A 200W PWM Module

DC Step-Down Voltage Regulator Module — 4–40V | 8A | 200W | Digital PWM Adjustable

Take full control of your power supply projects with this high-efficiency DC-DC step-down (buck) converter module. Designed for electronics hobbyists, engineers, and makers alike, this adjustable voltage regulator delivers smooth, stable, regulated output across a wide range of input voltages — making it ideal for DIY builds, lab bench power supplies, automotive electronics upgrades, and lithium battery charging systems.

Made in Mainland China.

Key Features

• High Conversion Efficiency: Built with a high-purity copper toroidal inductor and low-loss semiconductor components to minimize energy waste, reduce heat generation, and maximize power utilization for long-duration continuous operation.
• Superior Heat Dissipation: Aviation-grade aluminum alloy heat sinks mounted on high-power components rapidly conduct and dissipate excess heat, protecting the module from thermal damage and extending its service life.
• Stable, Ripple-Free Output: High-capacity electrolytic filter capacitors integrated into the circuit eliminate voltage ripples and external electrical interference — delivering clean, steady power to precision electronics.
• Durable FR-4 Circuit Board: Thickened flame-retardant FR-4 fiberglass PCB offers excellent insulation, corrosion resistance, and structural rigidity for reliable operation in humid, dusty, or demanding environments.
• Safe Terminal Block Design: High-strength, flame-retardant plastic terminal blocks ensure firm, secure wire connections — minimizing the risk of loose contacts or electrical leakage for safe use by professionals and hobbyists alike.

Specifications

Applications

• DIY electronics production and prototyping
• Laboratory power supply adjustment
• Lithium battery charging circuits
• Low-voltage electronic device power supply
• Electronic equipment modification and repair
• Automotive electronics project upgrades

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Note: Product images are for illustration purposes only. Actual size may differ — please refer to specifications above. Slight color variations may occur due to monitor differences. Allow minor tolerances from manual measurement.

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Frequently Asked Questions

Q: What is the input voltage range for this DC step-down voltage regulator module?

A: This DC-DC buck converter module accepts an input voltage range of 4V to 40V DC, making it compatible with a wide variety of power sources including batteries, bench power supplies, and automotive power systems.

Q: Can this voltage regulator module handle continuous high-current operation?

A: Yes. The module is rated for up to 8A output current and 200W maximum power. Its aviation-grade aluminum alloy heat sinks and high-purity copper toroidal inductor are engineered for extended, continuous high-load operation while maintaining stable, efficient performance.

Q: What does the digital PWM adjustment feature do?

A: PWM (Pulse Width Modulation) is the regulation method used to precisely control the output voltage. The digital PWM system allows for accurate, fine-tuned voltage adjustment, ensuring consistent and stable output for sensitive electronic components and circuits.

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

A: Absolutely. The module's safe flame-retardant terminal blocks, durable FR-4 PCB, and straightforward adjustable design make it accessible for both experienced engineers and electronics hobbyists working on DIY projects, prototyping, or equipment modifications.

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.