1. Three ways to use the module a. as a general step-down module with overcurrent protection capability; b. As a variety of voltage lithium batteries, batteries, nickel-cadmium nickel-metal hydride batteries (battery pack) charger used for solar panels, wind turbines and other occasions; c. used as a high power LED constant current drive module; 2. Module parameters Module name: 12A synchronous rectifier buck module, constant voltage constant current Module nature: non-isolated step-down module (BUCK) synchronous rectification Input voltage: 4-32V (limit 35V) Please keep the voltage margin. Output voltage: 1.2-32V continuously adjustable (default output of about 18V, if the power to the module and found that the left and right rotary voltage potentiometer output voltage has not changed, you first turn the voltage potentiometer counterclockwise rotation of more than 15 laps) Input and output minimum pressure difference: 0.8V Output current: 0-12A long time natural heat within 8A, the temperature does not exceed 60 degrees. Please reduce power when the ambient temperature is high. Output constant current range: 0-12A Operating temperature: -40 ~ +85 degrees Operating frequency: 150KHz Conversion efficiency: up to 98% (efficiency and input, output voltage, current, pressure related) Short circuit protection: Yes (limit current is current constant current value) Input Reverse Protection: None (if required, enter the string in the input diode) Output anti-backlash protection: none (if necessary, in the output string into the diode, for charging applications, please add the anti-diode between the output of the module and the battery, otherwise it will damage the module.) Size (including shell): long, wide, high, 70mm * 40mm * 30mm. Weight: 54g (including shell). 3. Application