Features Specification Features: This Constant Current Power Supply Volt Reducer Module with a wide range of input from 6V to 40V,the step-down converter can accurately adjust output voltage and current. The efficiency max can be up to 95%,measured at 20A,converting 24V to 12V. The buck converter designed with dual MOS tube of large current 75V / 80A. Adopt with high frequency low resistance electrolytic capacitor for input and output use,low ripple, stable output. Board mounted 2 heat sink,enhance dissipation function for the step dowm module. Wiring is convenient with these large current 30A screw terminals. When there is a big difference between input and output voltage,please decrease power and current. Specifications: Material: FR4 Input Voltage: 6V to 40V DC(10V to 40V is suggested) Output Voltage: 1.2V to 36V DC Output Current: 20A(max.), 15A(suggested) Efficiency: 95%(24V to 12V, 20A) Output Ripple: ≤50mV Wiring Method: Terminal Short Circuit conservation: Self-recovery(cannot short circuit for long time) Item Size: 60*53*27mm / 2.4*2.1*1.1in Item Weight: 89g / 3.1oz Package Weight: 92g / 3.2oz Package Size: 70*60*30mm / 2.8*2.4*1.2in Wiring instructions: VO +: output positive VO-: output negative + IN: Input positive - IN: Input negative CV: Output voltage regulation CC: Output current regulation EN: enable,low level to turn off output; pause,high voltage level is valid When the input and output are grounded,the no-load CV output is constant voltage,and the CC output is constant current. Package List: 1 * 300W 20A Step Down Module Package List 1 * 300W 20A Step Down Module