DC-DC High Efficiency 12A High Power Step-Down Adjustable CV/CC Lithium Battery Charging LED Driver Power ModuleItem NO.: MK02397

12A Step-Down Adjustable CV/CC

Module Info:

● Module name: 12A step-down constant voltage and constant current

● Module nature: non-isolated step-down module (BUCK)

● Input voltage: 4.5-32V

● Output voltage: 1-30V continuously adjustable, (the default output voltage is adjusted to 5V for shipment, please leave a message if you need the store to adjust to its computer voltage value for shipment). )

● Output constant current range: 0.3-12A (default is adjusted to 3A for shipment, if you need other current values, please explain to the shopkeeper)

● Working temperature: -40~+85 degrees

● Working frequency: 380KHz

● Conversion efficiency: 97% (efficiency is related to input, output voltage, current, and voltage difference)

● Short-circuit protection: yes (protection short-circuit current point is adjustable, can be short-circuited for a long time)

● Over-temperature protection: yes (automatically shut off the output after over-temperature)

● Input reverse polarity protection: yes

● Installation method: 4pcs 3mm screw

● Wiring method: wiring terminal (welding wire output when equipped with shell) V-IN is input, V-OUT is output

● Module size: length 70mm width 52mm height 50m

Buyer's Note:

This power supply has constant voltage and constant current short circuit protection function. The LED can be driven in constant current mode, the battery can be charged, but there is no full indicator light when charging the battery.The current detection of the module is low-end detection, please do not directly short-circuit the negative pole of the input and the negative pole of the output with a wire!The module is a step-down power supply, which can only be stepped down and cannot be stepped up. The input voltage must be higher than the output voltage.

Voltage/Current/Overcurrent Protection Point/Adjustment Method:

● Constant voltage adjustment: Turn the "constant voltage adjustment" potentiometer on the power board according to the voltage you need. Turn clockwise (turn to the right) to lower the voltage. Counterclockwise (turning to the left) the voltage increases.

● Constant current adjustment: Before setting the current, adjust the "overcurrent adjustment" potential to the left to the maximum, (I think it is the largest. Generally, no further adjustment is required) Use the multimeter 20A current gear to short-circuit the output, and adjust the "constant current adjustment" potential Adjust the current to the current you need, adjust the current clockwise to decrease, and adjust the current counterclockwise to increase.

● Over-current regulation: It is designed for output short-circuit, which means that when the output short-circuit exceeds the set short-circuit current, the power supply will turn off the output to protect the power module and electrical equipment from damage. Adjustment method: first set the current of the protection point, if it is 5A protection. Use the constant current adjustment method to adjust the output current to 5A, and then adjust the "overcurrent adjustment" potentiometer (rotate clockwise) to output no current. Sometimes the overcurrent point is 5A. (Note that if the current of the protection point is lower than the current required by the device, the power supply will be protected. It is recommended to keep the default if overcurrent protection is not required.)

Application Range:

1. DIY a regulated power supply with constant current function, not afraid of short circuit during use, which can protect the load.

2. Power your electronic devices.

3. Charge various batteries, set the charging voltage and charging current according to the batteries of different voltages and capacities

4. Use solar panel power supply to charge all kinds of batteries, with constant current function, which can prevent the battery from overcharging and effectively protect the battery.

5. Drive high-power LEDs, which can be freely combined in series and parallel,

6. As a car power supply, power supply for your mobile phone or various digital products.