Product parameters
● Module model: DC-DC step-down constant voltage constant current module
● Module color: brand new
● Module nature: Non-isolated buck module (BUCK)
● Input voltage: 4.5-32V
● Output voltage: 1-30V continuously adjustable
● Output constant current range: 0.3-12A (default output constant current is 3A)
● Output lamp range: 0.1-5A (default lamp current is 0.3A) There may be some error in the current range due to differences in part parameters
● Working temperature: -40~+85 degrees Celsius
● Working frequency: 380KHz
● Conversion efficiency: 97% (MAX) (efficiency is related to input and output voltage, current, and voltage difference)
● Short circuit protection: Yes (limit the current to the set constant current value)
● Overtemperature protection: Yes (automatic shutdown output after overtemperature)
● Input reverse protection: Yes
● Installation method: 4 3mm screws
● Wiring method: Wiring terminal (soldered output when equipped with a shell) V-IN is the input, V-OUT is the output
● Module size: length 70mm, width 52mm, height 50mm
Product Description
Buyer's note:
● This power supply has a constant voltage and current short-circuit protection function. LED can be driven in constant current mode to charge the battery.
● The current detection of the module is low-end detection. Please do not directly short-circuit the input negative pole and output negative pole with wires!
● The module is a step-down power supply that can only be reduced in voltage but not increased in voltage. The input voltage must be higher than the output voltage.
Voltage/current/overcurrent protection point/regulation method:
● Constant voltage regulation: Rotate the "constant voltage regulation" potentiometer on the power board according to the desired voltage. Turn clockwise (to the right) to lower the voltage. The voltage increases counterclockwise (turning to the left).
● Constant current regulation: Before setting the current, adjust the "overcurrent regulation" potential to Z large to the left (default is Z large. Generally, there is no need to adjust it again). Use a multimeter to output a short circuit in the 20A current range, and adjust the "constant current regulation" potentiometer to the current you need. Adjust the clockwise current to decrease and the counterclockwise current to increase.
● Overcurrent regulation: designed for output short-circuit, meaning that when the output short-circuit exceeds the set short-circuit current, the power supply will be turned off to protect the power module and electrical equipment from damage.
Adjustment method: First, set the current of the protection point, and protect it if it is 5A. Use a constant current regulation method to increase the output current to 5A, and then adjust the "overcurrent regulation" potentiometer (clockwise rotation) to output no current. At some point, the overcurrent point is 5A. (Note that if the current at the protection point is lower than the current required by the device, the power supply will be protected. It is recommended to maintain the default value if overcurrent protection is not required.)
Application scope
● 1. DIY is a regulated power supply with a constant current function, which is not afraid of short circuits during use and can protect the load.
● 2. Power your electronic devices.
● 3. To charge various batteries, set the charging voltage and current according to the batteries with different voltages and capacities.
● 4. Use a solar panel to power and charge various batteries with a constant current function to prevent overcharging and effectively protect the battery.
● 5. Drive high-power LED, which can be freely combined in series and parallel,
● 6. As a car power supply, it can power your phone or various digital products.
Packing Included
● *DC-DC 12A High-power Step Down Buck Converter
