High Current manufacturers 5A Constant voltage constant current step-down power module led Drive-in lithium battery
Under you when using this duct, the module inputs and outputs to the ground and do not co-together, this will cause the board on the back of the current sampling resistor is bypassed, so that the module can not adjust the output current size, then load conditions easily burning power chip module .
The module is easy to use, powerful! ! !
Having a module 3 Great features to meet your vast majority of occasions! ! !
1. High power, high efficiency, 5A , Low ripple;
? 1 ?Use as an ordinary step-down modules with overcurrent tection capabilities;
? 2 ?As various voltage lithium batteries, batteries, nickel-cadmium nickel-metal hydride batteries?Battery?Charger for solar panels, wind turbines and other occasions;
? 3 ?As a high led Constant current drive module;
3. Constant voltage and current has two modes, there are light indicates which mode is currently in the module;
4. When used as a lithium battery charger, you can set the float voltage and charge current, it has a light finger
It is shown being charged or has been filled;
5. Current limiting tection, short circuit will not burn even if the output module.
one, one, Module parameters
Input voltage : 4-38V
The output voltage: 1.25-36V Continuously adjustable
Output current: Adjustable, 5A
Output Power: maximum 75W
Operating temperature: -40 ~ + 85 degree
working frequency: 180KHz
Conversion efficiency: highest 96%
Short circuit tection: Have?Current restrictions 8A)
Over-temperature tection: Have?Automatic shutdown after over-temperature output?
Input reverse polarity tection: no,?If required, please enter the string into the high-current diode?
Installation: 4 Stars 3mm Screws
Wiring: Terminals or solder terminals, V-IN It is input, V-OUT Output
Module size: long 61.7mm width 26.2mm high 15mm
weight: 25 g
two two, Applications
1. Use as an ordinary step-down modules with overcurrent tection capabilities
? 1 ?adjust Constant potentiometer So that the output voltage reaches the value you want
? 2 ?With a multimeter 10A Current measuring the output short-circuit current gear?Directly to the two leads to the output to? , While adjusting Constant current potentiometer So that the output current reaches a predetermined overcurrent tection value.?For example, the current value is displayed on the multimeter 4A Then you can use the module to the maximum current 4A Current to 4A Constant voltage constant current when the red light is on, otherwise the LED is off?
Note: Use In this state, since the output end has 0.05 Europe's current sampling resistor connected to the load will be after 0 ~ 0.3V Pressure drop, this is normal! This drop is not being pulled down your load, but down-sampling resistor.
2. Use as a battery charger
Without constant function module can not be used to charge the battery, due to the complete consumption of the electrical battery charger with big difference between charging current is too large, resulting in damage to the battery, so start to the battery using a constant current charging, when charging to a certain extent automatically switch back to constant voltage charging.
? 1 ?Sure you need to charge the battery float voltage and charging current;?If the lithium battery parameters 3.7V / 2200mAh, So float voltage 4.2V , The maximum charging current 1C , which is 2200mA ?
? 2 ?Under no-load conditions, the multimeter to measure the output voltage, the constant voltage potentiometer to adjust the output voltage reaches the float voltage;?If you give 3.7V Rechargeable lithium battery, the output voltage is adjusted to 4.2V To?
? 3 ?With a multimeter 10A Current measuring the output short-circuit current gear?Directly to the two leads to the output to? , While adjusting Constant current potentiometer So that the output current reaches a predetermined charge current value;
? 4 ?Charge turn lamp current default is 0.1 Times the charging current; ( The battery during charging current is gradually reduced, gradually turned from the constant current charging to constant voltage charging, if the charging current is set 1A Then when the charge current is less than 0.1A When the blue light is off, the green light is on, then the battery is fully charged )
? 5 ?Connected to the battery charge.
?step 1 , 2 , 3 , 4 To: Enter the termination power, the output of load cell is not connected?
3. As a high led Constant current driver module
? 1 ?You need to determine the driving led Operating current and the maximum operating voltage;
? 2 ?Under no-load conditions, the multimeter to measure the output voltage adjustment potentiometer allows the output voltage reaches the constant voltage led Maximum operating voltage;
? 3 ?With a multimeter 10A Current output range measuring short-circuit current, while adjusting the constant current potentiometer allows the output current reaches a predetermined led Working current;
? 4 ?Continued led ,Test machine.
?step 1 , 2 , 3 As follows: power input interface, output load is not connected led light.?
Note: This module over 3A , 35W When using, please enhance heat dissipation! ! !
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