Usage Tips:DC to DC CC CV step down board is a 300KHz fixed frequency PWM buck (step-down) DC/DC module, capable of driving a 5A load with high efficiency, low ripple and excellent line and load regulation. XL4015 E1 power converter is high power, high efficiency, 5A high current output, low ripple with power indicator. Input range: DC 8 V - 36 V, output range: DC 1.25 V - 32 V, over temperature protection; short circuit protection; Current limit protection; even if the output is short-circuited, the module will not be damaged. This DC-DC converter can be used to debug multiple system operating voltage ranges, maintain stable output voltage and limit the output current over a range of input voltages. Great for general voltage conversion, battery charging, powering raw LEDs, automotive electronics, battery conversions, micro-controllers, and electronic projects. Non-isolated constant current and constant voltage module , non-synchronous rectification Input voltage : 8-36V(Please try not to exceed 36V as input) Output voltage : 1.25-32V continuously adjustable Output current : 0-5A adjustable, recommended for use within 4.5A Working temperature : -40~+85 degrees Working frequency : 300KHz Output power : maximum 75W Conversion Efficiency : up to 95%(efficiency related to input,output voltage,current,voltage difference) Output ripple : 50mV (max) 20M bandwidth Load Regulation : ± 0.5% Voltage Regulation : ± 2.5% Short circuit protection : Yes Over temperature protection : Yes (automatically turn off the output after over temperature) Input reverse connection protection : None (If necessary, please input a large current diode in the input string) Wiring method : Terminal block or solder, IN is input, OUT is output size:5.1x2.6x1.5cm Material:ABS colour:As shown Package Contents: 10 x Down Charging Board Only the above package content, other