Erősáramú 5A lítium-ion akkumulátortöltő LED-es vezérlésű, fokozatmentes állandó áramú tápmodul
High-current 5A lithium ion battery charging LED driven step-down constant current power module
Module highlights:
 
1. High power, high efficiency, 5A, low ripple;
 
2. Three in one:
 
(1) Used as a common step-down module with overcurrent protection capability;
 
(2) As a variety of voltage value lithium battery, battery, nickel cadmium nickel hydrogen battery (battery) charger, used for solar panels, wind turbines and other occasions;
 
(3) Used as high-power LED constant current driver module;
 
3. It has two modes of constant voltage and constant current, with an indicator indicating which mode the module is in;
 
4. When used as a lithium battery charger, floating charging voltage and charging current can be set, with an indicator indicating
 
Indicate whether it is being charged or fully charged;
 
5. With current limiting protection function, even if output short circuit will not burn out the module.
 
Module parameters
 
Input voltage :4-38V
 
Output voltage: 1.25-36V continuously adjustable
 
Output current: adjustable, large 5A
 
Output power: 75W
 
Operating temperature: -40~ 85 degrees
 
Working frequency: 180KHz
 
Conversion efficiency: 96 hundred
 
Short circuit protection: yes (limit current 8A)
 
Overtemperature protection: yes (automatically turn off output after overtemperature)
 
Input reverse connection protection: none, (if necessary, input high current diode)
 
Installation method: 4 3mm screws
 
Wiring mode: Wiring terminal or welding terminal, V-IN for input, V-OUT for output
 
Module size: length 61.7mm width 26.2mm height 15mm
 
Weight: 25 g
 
Two, the scope of application
 
1. Used as a common buck module with overcurrent protection capability
 
Usage:
 
(1) Adjust the constant voltage potentiometer to make the output voltage reach the voltage value you want
 
 
 
(2) use multimeter 10A current file to measure the output short-circuit current (directly connect the two meters to the output end), and adjust the constant-current potentiometer to make the output current reach the predetermined over-current protection value. (For example, if the current value displayed by the multimeter is 4A, then the high current can only reach 4A when you use the module. When the current reaches 4A, the red constant voltage and constant current indicator will be on; otherwise, the indicator will be off)
 
Note: when used in this state, due to the output end of 0.05 ohms current sampling resistance, after connected to the load, there will be 0~0.3V voltage drop, this is normal phenomenon! The voltage drop is not pulled down by your load, but by the sampling resistance.
 
2. Use as a battery charger
 
The module without constant current function cannot be used to charge the battery. Due to the large pressure difference between the exhausted battery and the charger, the charging current is too large, resulting in battery damage. Therefore, the battery should be charged with constant current at the beginning, and when the charge reaches a certain extent, it will automatically switch back to constant voltage charging.
 
Usage:
 
(1) Determine the floating charging voltage and charging current of the battery you need to charge; (If the lithium battery parameter is 3.7V/2200mAh, then the floating charging voltage is 4.2V, the large charging current 1C, that is, 2200mA)
(2) Under no-load conditions, the multimeter measures the output voltage and adjusts the constant-voltage potentiometer to make the output voltage reach the floating charging voltage; (If you charge 3.7V lithium battery, adjust the output voltage to 4.2V)
(3) use multimeter 10A current file to measure the output short-circuit current (directly connect the two pens to the output end), and adjust the constant-current potentiometer to make the output current reach the predetermined charging current value;
(4) The default charging current to lamp is 0.1 times the charging current; (The current of the battery in the charging process is gradually reduced, gradually from constant current charge to constant voltage charge, if the charging current is set to 1A, then when the charging current is less than 0.1a, the blue light is off, the green light is on, and the battery is charged.)
(5) Connect the battery and charge it.
 
(Steps 1, 2, 3, and 4 are: the input terminal is connected to the power supply, and the output terminal is not connected to the battery when there is no load)
 
3. Used as high power LED constant current driver module
 
(1) Determine the working current and working voltage that you need to drive the LED;
 
(2) Under the condition of no load, the multimeter measures the output voltage and adjusts the constant voltage potentiometer to make the output voltage reach the LED working voltage;
 
(3) Use multimeter 10A current file 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) Connect LED, test machine.
 
(Steps 1, 2, and 3 are: input is connected to power supply, output is not connected to LED light when no load.)
 
 
 
Note: when this module is over 3A, 35W, please strengthen the heat dissipation!!
1005003262918031 - supersel