5A XL4015 DC-DC 4-38V to 1.25-35V Step Down DC-DC buck Converter

Specifications: Model: XL4015 / Digital Display Voltmeter - Input Voltage: DC 4V - 38V - Output Voltage: DC 1.25V - 35V (adjustable) - Output Current: 0-5A ( recommended working current <4.5A) - Conversion Efficiency: 96% (max.) - Switching Frequency : 180KHz - Operating Temperature: -45℃ to +85℃ - Size(L x W x H): 62*38*14mm Features: - High power DC-DC step-down module - Thickened circuit boards - Advanced solid-state capacitor - Short circuit and over-temperature protection - 100% tested, sealed in anti-static packaging Note: The buck converter consists of 36u thickened circuit boards, high-Q inductance with output LED indicator, and superior solid-state capacitors that can effectively filter out high frequency noise. Suitable for various electronic projects. Do not reverse the input and output interface. Input Voltage DC 4V to 38V (input voltage must be 1.5V higher than the output voltage, no boost). Output Voltage DC 1.25V to 35V voltage is continuously adjustable, maximum output current is 5A. Use a heat sink when in use over a long working period or over 50 Watts. D.I.Y. Connect to power source, using a mini screwdriver to increase or decrease output voltage by adjusting the screw on the blue potentiometer and monitor voltage with multimeter to get the needed voltage, clockwise to step up voltage and counterclockwise to step-down voltage. (Factory default stays at high voltage, you need to counter-turn about 7-15 rotations before the voltage starts decreasing, 1 circle means +/- 1V). How to Calibrate the Digital Display Voltmeter (Optional steps for the person who need a highly accurate voltage value) 1. Short press the left "ON/OFF" button to start up the digital display voltmeter. Long press (>1s, <4 seconds) the left button to shut down the digital tube voltmeter. 2. Long press (>4 seconds) the left button to enter self-calibration of voltage measurement (calibration range: -0.5-0.5V, factory setting is 0.0). "IN" indicator lights = input voltage measurement calibration starts. Then, long press (>2 seconds) the right "Mode" button, "OUT" indicator lights = output voltage measurement calibration starts. Tap the left / right button to reduce / rise by one unit (since the voltage value of one unit is less than 0.1V, you need to tap the button continuously 1-5 times, so that the voltmeter can change by 0.1V) 3. After calibration, long press (>2 seconds) the right "Mode" button to preserve the adjusted value (no loss with outage) and back to normal voltage display. XL4015 (XL4015_datasheet.pdf, 248 Kb) [Download]