DC-DC Automatic Buck-Boost Adjustable Step-Up/Step-Down Power Module

When your power source is unpredictable such as a solar panel that drops voltage when a cloud passes, or a 12-Volt car battery that spikes up to 14.4 Volts when the engine is running and drops to 10 Volts when the engine is off standard converters simply cannot cope. A standard buck converter can only step voltage down, and a boost converter can only step voltage up. This Automatic Buck-Boost Module solves that exact problem. It does not matter if your input voltage swings higher or lower than your desired output; this intelligent module will automatically transition between boosting and bucking to keep your power rail absolutely rock-solid.

Built around high-efficiency MOSFET switching technology operating at 400 kHz, this module provides vastly superior performance compared to older LM2577 designs. It readily accepts a massive input range of 3.8 Volts to 32 Volts and allows you to accurately dial in your required output anywhere from 1.25 Volts up to 35 Volts using the onboard precision potentiometer. Capable of handling peak switching currents up to 4 Amps, it is an essential component for solar energy harvesting, automotive electronics, and wind power applications where stabilizing erratic voltage is critical to preventing equipment damage.

Key Features & Functional Advantages

• True Automatic Buck-Boost: Seamlessly transitions between stepping the voltage up and stepping it down on the fly, ensuring your sensitive electronics never experience a destructive voltage dip or spike.

• Fully Adjustable Output: The onboard precision trimpot gives you absolute, granular control over your output voltage, providing the perfect rail for 12-Volt lighting, 5-Volt logic, or 24-Volt controllers.

• Massive Input Tolerance: Safely accepts anything from low-voltage 5-Volt USB lines up to 32-Volt fluctuating solar arrays and heavy-duty 24-Volt vehicle alternators.

• High-Efficiency Switching: Operates at a rapid 400 kHz frequency, allowing the circuit to run at up to 94 percent efficiency, drastically reducing thermal waste and maximizing energy capture from your solar panels.

• High Current Capacity: The robust internal 4-Amp MOSFET switches provide reliable, steady power for demanding electromechanical loads, significantly outperforming standard 3-Amp converters.

Perfect For

• Solar Power Systems: Taking the wildly fluctuating voltage of a small solar panel and locking it into a stable output for directly charging batteries or running external sensors.

• Automotive Electronics: Providing a completely clean, stable 12-Volt rail for sensitive dashboard displays and microcontrollers, regardless of engine cranking drops or alternator spikes.

• Wind Power Projects: Stabilizing the erratic output of small DIY wind turbines to safely harness the energy without over-voltaging downstream electronics.

• Battery Management: Creating a reliable, continuous charging voltage when your main power source frequently drops below the voltage of the battery you are actively trying to charge.

Technical Specifications

• Device Type: Automatic DC-DC Buck-Boost (Step-Up/Step-Down) Converter

• Input Voltage Range: 3.8 Volts to 32.0 Volts DC

• Adjustable Output Voltage: 1.25 Volts to 35.0 Volts DC

• Maximum Switching Current: 4.0 Amps (Peak), ~3.0 Amps (Continuous depending on voltage difference)

• Switching Frequency: 400 kHz

• Maximum Efficiency: Up to 94 percent

• Module Dimensions: Approximately 48mm x 25mm x 14mm

Ensure your order is placed by 2PM to guarantee next-day delivery! Our commitment to prompt service includes a 24-hour delivery system through our network of carriers, aimed at ensuring your package arrives right on schedule.

Please note, a delivery fee of €4.99 applies for orders under €50. For those in remote areas, be aware that our couriers may apply an extra surcharge. This additional fee helps cover the costs of transporting your items to harder-to-reach locations.