A high-efficiency DC-DC voltage step-up power supply designed to increase low DC voltage to a higher adjustable output. Ideal for DIY electronics, battery-powered systems, robotics, automotive projects, solar applications, and embedded systems. Compatible with Arduino, ESP32, Raspberry Pi, and various electronic devices requiring stable voltage conversion. Features: High-efficiency DC-DC step-up conversion Adjustable output voltage Wide input voltage range Built-in XL6019 switching regulator Compact and durable module design Stable power output with low ripple Specifications: Chipset: XL6019 Input Voltage: 3V – 35V DC Output Voltage: 5V – 40V DC Adjustable Output Current: Up to 4A (recommended ≤3A for continuous use) Conversion Efficiency: Up to 94% Switching Frequency: 400KHz Protection: Over-temperature and built-in switching regulation Application: Power supplies, battery boosting, solar systems, robotics, automotive electronics, DIY projects