Auto Buck Boost Converter 5-30V to 0.5-30V

Power almost any project from almost any source with this Automatic Step Up/Step Down Power Supply Board, a buck-boost converter that seamlessly switches between boosting and bucking to deliver a stable, adjustable output regardless of how the input voltage fluctuates. Set your desired output anywhere between 0.5V and 30V, and the module will automatically step the input up or down to hit and hold that target, whether your source is above, below, or right at your set voltage.

Built around a dedicated buck-boost controller IC with an external high-power MOSFET and dual Schottky rectifiers, this module delivers noticeably better efficiency and thermal performance than common XL6009 or LM2577-based boards. Two onboard potentiometers give independent control over output voltage (CV) and current limiting (CC), making it equally useful as a simple adjustable power supply or as a proper constant-current driver for LED strips and battery charging. Built-in short-circuit protection and an anti-backflow diode option add an extra layer of safety when charging batteries or driving sensitive loads.

This converter is a versatile addition to any hobbyist’s bench, well suited for solar power setups, battery-powered projects with fluctuating source voltage, LED constant-current lighting, and general lab-style power supply use. Indicator LEDs for output and constant-current mode make it easy to see the module’s current operating state at a glance, and its wide input range means it can adapt to a broad mix of power sources without needing a different converter for each one.

Specification:

• Input Voltage : DC 5-30V
• Output Voltage : DC 0.5-30V (Adjustable)
• Output Current : 0-4A (Adjustable)
• Output Power : 35W (Natural Cooling), Up to 60W (With Heatsink/Fan)
• Conversion Efficiency : Approx. 88%
• Mode : Automatic Buck/Boost with CC/CV
• Protection : Short-Circuit Protection