5A Constant voltage constant current step-down power module with display led Drive-in lithium battery
With voltage, current, power display, without multimeter it can also be easy to use, powerful!
band USB Interface with 3 Great features To meet the vast majority of occasions!
1. On-board voltage, current, power meter, you do not have a multimeter can easily use this module, easier and more intuitive.
2. The on-board USB interface, you can easily give your digital ducts charge.?Note: USB output voltage and the module output voltage is consistent, not fixed 5V output, to make sure the front USB device is charging?
3. The high power, high efficiency, 5A, low ripple;
4. The three major functions:
?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?Used as high-power LED constant current driver module;
5. With Constant voltage and current modes, the indicator light indicates which mode is currently in the module;
6. When used as a lithium battery charger, you can set the float voltage and charge current, has a light finger
It is shown being charged or has been filled;
7. With current limit tection, output short circuit will not even burn module.
8. The on-board voltage, current meter can self-calibration, there will never be a blem of inaccurate!
9. finned, Get pillars!
Input voltage : 5-36V
The output voltage: 1.25-32V Continuously adjustable
Output current: adjustable, 5A ?Recommended 4.5A Use within?
Output Power: Max 75W ?Recommended 50W Internal use, large pressure to reduce power use, please?
Operating temperature: -40 ~ + 85 degree
working frequency: 180KHz
Conversion efficiency: Up 96%
Short circuit tection:
Overtemperature tection:?Automatic shutdown after over-temperature output?
Input reverse polarity tection: None,?If required, please enter the string into the high-current diode?
Installation: 4 Stars 3mm Screws
Connection: terminals or solder terminals, V-IN It is input, V-OUT Output
Module dimensions: length 68.2mm width 38.8mm high 15mm
1. Use as an ordinary step-down modules with overcurrent tection capabilities
? 1 ?Press the button on the right will adjust to the digital tableShow the output voltageInterface, constant adjustment potentiometer, the output voltage reaches the value you want;
? 2 ?The adjustment to the digital tableOutput currentInterface, direct output of short modules?Find articles thicker wire shorted to the output terminal? , Now the adjusting potentiometer allows constant current digital table reaches a preset value overcurrent tection;?For example, on-board ammeter display the current value is 4A , The maximum current is limited to the module 4A Current to 4A When the red light?
? 3 ?Connected to the load and work.
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 ?Make sure 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 module is adjusted to the digital tableShow the output voltageInterface, constant voltage potentiometer to adjust the output voltage reaches the float voltage ;
? 3 ?The adjustment to the digital tableOutput currentInterface, direct output of short modules?Find articles thicker wire shorted to the output terminal? , In this case adjust the current value of the constant current potentiometer allows the digital watch on the charging current reaches a preset 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 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, adjust to digital formShow the output voltageInterface, constant voltage potentiometer to adjust the output voltage reaches led Operating Voltage ;
? 3 ?The adjustment to the digital tableOutput currentInterface, direct output of short modules?Find articles thicker wire shorted to the output terminal?The current value of the constant current potentiometer allows digital adjustment on the table at this time reaches a preset led Working current ;
? 4 ?Continued led ,Test machine.
?step 1 , 2 , 3 As follows: power input interface, output load is not connected led light?
4, Onboard voltage, current meter self-calibration method:
1. When onboard digital table shows the output voltage, long press on the right button 2 Seconds after the release, voltmeter and an output voltage indicator OUT Synchronous flashing, this time into the output voltage calibration mode; Similarly, when the input voltage voltmeter display, press the button on the right side 2 Seconds after the release, voltmeter and input voltage indicator IN Synchronous flashing, this time into the input voltage calibration mode; when the voltmeter shows the output current, press the button on the right side 2 Seconds after the release, ammeter blinking, into the output current calibration mode;
2. Touch the button on the right side, the voltage?Electric current?Unit increase, touch the left button, the voltage?Electric current?A reducing unit; a unit because the voltage value of less than 0.1V , So you need to continuously press 1-5 Times to see changes in the voltmeter 0.1V Specific continuous button several times depending on the voltage value currently displayed, the current display higher the voltage, the less the number of press;
3. Voltage?Electric current?After the adjustment, press the button on the right side 2 Seconds after the release, this time to exit the calibration mode, all parameters set to automatically power-down save.
Note: This feature is used to display the precision calibration voltage, current, and not used to adjust the output of the voltage and current values. This feature is designed to meet your higher accuracy requirements of the design, you only need to calibrate once you can get accurate values on the entire range, ease of use.
Module inputs and outputs to the ground and do not co-together, this will cause a current sampling resistor shunt module so that the module can not adjust the output current, the case load connected easily burn module.
Module output of a current sampling resistor string, connected to the load will be after 0 ~ 0.2V The pressure drop is normal.
There are customers reflect the module output voltage can not be adjusted when you encounter this blem, please counterclockwise rotary potentiometer 10 Circle above, then you can use the module perly regulate the voltage. Because the module default output voltage 17V .
exceed 3A , 35W Output, please enhance heat dissipation!
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