Product: ACEIRMC 20A 300W CC CV Step Down Module Adjustable DC 6-40V to 1.2-36V Voltage Regulator Buck Converter Constant Current Power Supply Module
Brand: ACEIRMC
Features:  With a wide input voltage range from 6V to 40V, the step-down converter can accurately adjust output voltage and current.  The efficiency can be up to 96%, measured at 20A, converting 24V to 12V.  It is designed with 75V/80A large current dual MOS tube.  Input and output use high frequency low resistance electrolytic capacitor, low ripple, stable output.  Wiring is convenient with these large current 30A screw terminals.  The buck module has 2 heat sink that could enhance heat dissipation.  When there is a big difference between input and output voltage, please decrease power and current.   Specifications:  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 Protection: Self-recovery(cannot short circuit for long time)  Size: 60 x 53 x 27mm / 2.36 x 2.08 x 1.06"  VO+: Output positive VO-: Output negative +IN: Input positive  -IN: Input negative CV: Output voltage adjustment CC: Output current adjustment EN: Enable, low voltage level shut off output; suspension, high voltage level is effective When input and output is common grounded, no-load CV output constant voltage,CC output constant current Package includes:  1 * 20A 300W DC DC Buck Converter 
Aceirmc buck converter input voltage range is DC 6-40V, adjustable output voltage range is DC 1.2-36V, can be used to convert 24v to 12v 5v, adjustable output current range is 0-20A, max output power is 300W. The step down regulator can apply to constant output current.
With a wide input voltage range from 6V to 40V, the step-down converter can accurately adjust output voltage and current. The efficiency can be up to 95%,(measured at 20A, converting 24V to 12V).
Short Circuit Protection: Self-recovery(cannot short circuit for long time). Plus, when input and output is common grounded, no-load CV output constant voltage,CC output constant current
Adopting 75V / 80A large current dual MOS tube designed step-down board, Input and output use high frequency low resistance electrolytic capacitor, low ripple, and gives a stable output. Large current 30A connection screw terminals, more convenient to install
Application: DIY stabilized voltage supply, LED car display, mobile power, industrial equipment appliances, LED driver, monitor, solar energy, fans, photovoltaic energy, motor, etc

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