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5A Voltage Current Step-down Power Module with Digital Voltage Display

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US$5.38 US$6.91

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Quantity2 -56 -1011 -2122 -100101 +
PriceUS$5.22US$5.11US$4.95US$4.84US$4.68
Ships From: Tsing Yi Warehouse, Hong Kong (Tax Free)
Dispatch: Usually will be shipped in 24 hours
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Module parameters
Input voltage: 5-36V
The output voltage:1.25-32VContinuously adjustable
Output current: adjustable, maximum5A(Suggested4.5AUse within)
Output power: maximum75W(Recommended at50WWithin the use of large pressure difference, please reduce the power)
Operating temperature:-40 ~ + 85degree
working frequency:180KHz
Conversion efficiency: highest96%
Short circuit protection: Yes
Over-temperature protection: Yes (over-temperature automatically turn off the output)
Input Reverse Protection: None, (if required, enter the high-current diode in the input string)
Installation:4Stars3mmScrew
Wiring method: terminal block or welding terminal,V-INFor input,V-OUTFor output
Module size: long68.2mmwidth38.8mmhigh15mm
weight:35g
 
Application scope
1. Used as a normal buck module with overcurrent protection capability
Instructions:
(1) Press the right button to adjust the digital meter toDisplay output voltageInterface, adjustment”Constant voltage potentiometer”, So that the output voltage to the desired voltage value;
(2) Adjust the digital table toDisplay output currentInterface, direct short-circuit module output (to find a thick wire short-circuit output can be),Adjust at this time”Constant current potentiometer”So that the current value on the digital table reaches the preset overcurrent protection value; (such as the onboard ammeter shows the current value is4A, Then the module maximum current is limited to4A, Current to4AWhen the red indicator light is on)
(3) Connected to the load, work.
2. Used as a battery charger
Non-constant current function of the module can not be used to charge the battery, due to the power consumption of the battery and the charger is a great pressure, resulting in charging current is too large, resulting in battery damage, so the beginning of the battery to use constant Flow charge, when the charge to a certain extent, when the automatic switching back to constant voltage charging.
Instructions:
(1) Determine the battery’s float voltage and charge current;(If the lithium battery parameters for3.7V / 2200mAh,Then the float voltage is4.2V, The maximum charge current1C, which is2200mA)
(2) Under no load conditions, adjust the module’s digital table toDisplay output voltageInterface, adjustment”Constant voltage potentiometer”So that the output voltage reaches the float voltage;
(3) Adjust the digital table toDisplay output currentInterface, direct short-circuit module output (to find a thick wire short-circuit output can be),Adjust at this time”Constant current potentiometer”So that the current value on the digital table reaches the preset charge current value;
(4) Charging Turn the lamp current factory default0.1Times the charge current;The battery in the process of charging the current is gradually reduced, and gradually from constant current charging to constant voltage charging, if the charge current is set1A, Then when the charge current is less than0.1AOf the time, the blue light off, green light, then the battery charge is completed)
(5) Connected to the battery, charging.
(step1,2,3,4For: input termination power supply, the output does not load the battery)
3. Used as LED constant current drive module
(1) Ok you need to driveledOf the operating current and the maximum operating voltage;
(2) Under no load conditions, adjust the digital table toDisplay output voltageInterface, adjustment”Constant voltage potentiometer”So that the output voltage to achieveledOperating Voltage;
(3) Adjust the digital table toDisplay output currentInterface, direct short-circuit module output (to find a thick wire short-circuit output can be), then adjust”Constant current potentiometer”So that the current value on the digital table to achieve the defaultledWorking current;
(4)led,Test machine.
(step1,2,3For: input to the power supply, the output no load is not connectedledlight)
 
Precautions
The input field of the module and the output ground should not be together, this will cause the module current sampling resistor bypass, so that the module can not adjust the output current size, then load the case easy to burn the module.
Module output string with a current sampling resistor, connected to the load will be0 ~ 0.2VOf the pressure drop, as a normal phenomenon.
There are customers to reflect the module output voltage can not be adjusted, when you encounter this problem, please counterclockwise rotation potentiometer10Circle above, and then use the module can be a normal regulator of the voltage. Because the module is factory, the default output voltage is17VThe
exceed3A,35WOutput, please strengthen the heat!
Onboard voltage, ammeter Self-calibration method:
1.Onboard digital table shows the output voltage, long press the right button2Seconds after the release, the voltmeter and the output voltage indicator “OUT”Synchronization flashing, then enter the output voltage calibration mode; Similarly, in the voltmeter shows the input voltage, long press the right button2Seconds after the release, the voltmeter and input voltage indicator “IN”Sync flashing, then enter the input voltage calibration mode; in the voltmeter shows the output current, long press the right button2Seconds after the release, ammeter flashing, then enter the output current calibration mode;
2.Touch the right button, the voltage (current) rises by one unit, touch the left button, and decrease the voltage (current) by one unit; since the voltage value of one unit is less than0.1VSo you need to press continuously1-5Times to see the voltmeter changes0.1V, The specific number of consecutive keys depends on the current display voltage, the current display voltage is higher, the fewer the number of press;
3.When the voltage (current) is adjusted, press the right button2Seconds after the release, then you can exit the calibration mode, all parameters set to automatically save power.
Note: This function is used to calibrate the voltage, current display accuracy, not used to adjust the output voltage, current value. This feature is designed to meet your higher accuracy requirements. You only need to calibrate once to get accurate values throughout the range.

Module highlights
1.Onboard voltage, current, power meter, you do not have a multimeter can also easily use this module, more simple,
Intuitive.
2.OnboardUSBInterface, you can easily charge your digital products.(note:USBThe output voltage is the same as the module output voltage and is not fixed5VOutput toUSBPlease confirm before charging the equipment)
3.High power, high efficiency,5A, Low ripple;
4.Three functions:
(1) As a general step-down module with overcurrent protection capability;
(2) As a variety of voltage lithium batteries, batteries, nickel-cadmium nickel-metal hydride batteries (battery pack) charger used for solar panels, wind turbines and other occasions;
(3) As high powerledConstant current drive module used;
5.With constant voltage and constant current two modes, there are indicators that the module is currently in which mode;
6.When used as a lithium battery charger, you can set the float voltage and charge current size, with indicator light
Show whether it is charging or is full;
7.With current limiting protection function, even if the output short circuit will not burn the module.
8.Onboard voltage, ammeter can be self-calibration, there will never be inaccurate!
9.With heat sink, gift pillars!

Package Content:

1 X Power Step-Down Module

5A Voltage Current Step-down Power Module with Digital Voltage Display5A Voltage Current Step-down Power Module with Digital Voltage Display5A Voltage Current Step-down Power Module with Digital Voltage Display5A Voltage Current Step-down Power Module with Digital Voltage Display5A Voltage Current Step-down Power Module with Digital Voltage Display

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