DC-DC 20A step-down constant voltage constant current adjustable vehicle power supply module high-power charging module LED driver

Introduction to Synchronous Rectification Technology:
Synchronous rectification is a new technology that uses dedicated power MOSFETs with extremely low on state resistance to replace rectifier diodes and reduce rectification losses. It can greatly improve the efficiency of DC/DC converters and there is no dead zone voltage caused by barrier voltage. Power MOSFETs belong to voltage controlled devices, and their volt ampere characteristics exhibit a linear relationship during conduction. When using power MOSFETs as rectifiers, it is required that the gate voltage must be synchronized with the phase of the rectified voltage in order to complete the rectification function, hence it is called synchronous rectification. Synchronous rectification technology greatly reduces the rectification loss at the output end of switch mode power supplies, thereby improving conversion efficiency and reducing the heating of the power supply itself.
Module parameters
Module nature: Synchronous rectification non isolated step-down constant current constant voltage module CC CV charging module
Scope of application: high-power LED constant current drive, lithium battery charging (including ferroelectricity), 4V, 6V, 12V, 14V, 24V battery charging, nickel cadmium nickel battery (battery pack) charging, solar panels, wind turbines
Input voltage: 6-40VDC
Output voltage: continuously adjustable (1.2-35VDC) for a long time below 32V (suitable for applications where the input voltage is higher than the output voltage and cannot be boosted)
Output current: Maximum 20A, within 15A for a long time (if the temperature of the power tube exceeds 65 degrees, please add a fan for heat dissipation, and for high voltage output, please reduce the rating for use)
Current limiting range: 0.2-20A (adjustable). If the module exceeds 65 degrees, please add a fan.
Minimum pressure difference: 3V
Working frequency: 150KHZ
Conversion efficiency: up to about 96% efficiency depends on pressure difference and usage environment
Output ripple: ripple around 50mV (excluding noise), 20M bandwidth (for reference only), measured at 24V input
Working temperature: -10 ℃ to+75 ℃) (Please pay attention to the temperature of the power tube during actual use. If the temperature is too high, please strengthen heat dissipation or reduce the rating for use)
Direction of potentiometer adjustment: clockwise (increase), counterclockwise (decrease)
Output short-circuit protection: with (instantaneous protection) constant current (the current set constant current value cannot be short circuited for a long time)
Input protection: none,
Output anti backflow: None, used for self powered loads or inductive loads that require an additional 2-pole transistor!
Wiring method: Wiring terminals
Module size: 60 * 53 * 30MM
Net weight: approximately 85 grams
Output current adjustment method:
1. Adjust the CV potentiometer and set the output voltage to the voltage value you need according to your load requirements.
2. Set the CC potentiometer counterclockwise for about 30 turns (i.e. set the output current to the minimum), connect the LED, and adjust the CC potentiometer to the current you need. For battery charging, after discharging the battery, connect it to the output and adjust CC to the current you need. (When using it for charging, be sure to use the discharged battery to adjust it accurately, because the more battery power is left, the lower the charging current.)