DC to DC CC CV board is a 300KHz fixed frequency PWM (step-down) DC/DC module, capable of driving a 5A load with high efficiency, low ripple and line and load regulation. XL4015 E1 power converter is , 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 , automotive electronics, battery conversions, -controllers, and electronic projects. Non-isolated constant current and constant voltage module , non-synchronous rectification Input voltage : 8-36V( try not to 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, input a current diode in the input string) Wiring : 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 products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.