5A DC to DC CC CV Lithium Battery Step down Charging Board Led Power Charger Buck Module XL4015 5-32V
This linear module has constant voltage and constant current function (CC CV).
When you use it as a charger. this module use good chip as core and it is stable.
Size: 51 * 26.3 * 14 (L * W * H) (mm)
Operating Temperature: -40 ° to +85 °
Voltage Regulation: ± 2.5%
Load Regulation: ± 0.5%
Output ripple: 50mV (max) 20M bandwidth
Switching frequency: 300KHz
Conversion efficiency: 95% (the highest)
Output current: adjustable maximum 5A
Output voltage: 0.8V-30V
Input voltage: 5V-32V
Rectification: non-synchronous rectification
Module Properties: non-isolated constant current and voltage module.
★ This module is an adjustable step-down module. You can change the output voltage by adjusting the blue adjustable resistor on the module. The input and output voltage difference is 1V, and the minimum voltage can be 0.8V.
★ The IN- (input negative), IN + (input positive), OUT- (output negative), OUT + (output positive) marked on the module must be connected correctly, otherwise the module may be damaged.
★ Battery charging
1. Determine the floating voltage and charging current of the battery you need to charge, and the input voltage of the module;
2. Adjust the constant voltage positioner to adjust the output voltage to about 5V.
3. Use the multimeter 10A current block to measure the output short-circuit current, and at the same time adjust the constant current potentiometer to make the output current reach the predetermined charging current value;
4. By default, the charging turn lamp current is 0.1 times the charging current (constant current value).
5. Adjust the constant voltage positioner to make the output voltage reach the floating charge voltage;
6. Connect the battery and try charging.
(Steps 1, 2, 3, 4, and 5 connect the module input to the power supply, and the output is not connected to the battery.)
★ LED constant current drive
1. Determine the working current and maximum working voltage you need to drive the LED;
2. Adjust the constant voltage positioner to adjust the output voltage to about 5V.
3. Use the multimeter 10A current block to measure the output short-circuit current, and adjust the constant current potentiometer to make the output current reach the predetermined LED working current;
4. Adjust the constant voltage positioner so that the output voltage reaches the maximum working voltage of the LED;
5. Connect the LED and test the machine.
(Steps 1, 2, 3, and 4 connect the module input to the power supply, and the output is not connected to the LED light.)
