Overview
The 4A Adjustable Buck-Boost Module is a versatile power solution that combines high current capacity with automatic voltage regulation. Most converters only work in one direction, but this module can take a low voltage and step it up, or a high voltage and step it down to your exact desired setting. With a 4A current limit, it is significantly more robust than the common XL6009, making it suitable for driving high-power LEDs, charging battery packs, or powering Raspberry Pi setups in automotive environments.
Key Features
True Auto Buck-Boost: Whether the input is 5V, 12V, or 24V, you can set a constant output of 12V and it will never budge.
4A High Current: Optimized for high-load applications with improved thermal management compared to smaller modules.
Low Ripple & High Efficiency: Uses synchronous rectification technology to minimize energy loss and heat generation.
Large Heat Dissipation: Typically comes with a larger inductor and high-quality capacitors to handle sustained power delivery.
Safe for Electronics: Features under-voltage protection and over-current safeguards.
Technical Specifications
| Feature | Specification |
| Input Voltage | 5.5V – 30V DC |
| Output Voltage | 0.5V – 30V DC (Adjustable) |
| Output Current | 3A (Continuous) / 4A (With enhanced cooling) |
| Output Power | 35W (Natural cooling) / 50W (With Heatsink) |
| Voltage Resolution | 0.01V |
| Conversion Efficiency | Approx. 88% |
| Short Circuit Protection | Yes |
Why Choose the 4A Version?
Battery Charging: Perfect for charging a 12V battery from a solar panel that might output anywhere from 8V to 22V.
Stable 5V for Pi: Ideal for running a Raspberry Pi or Jetson Nano in a car where the battery voltage drops during engine start.
LED Driver: Can drive large arrays of 10W or 20W LEDs that require precise current and voltage.


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