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5A Constant Current Constant Voltage Power Supply Dual Display Module


Specifications: 
Power Properties
Module Properties: Non-isolated buck module
Rectifier mode: non-synchronous rectifier
Input voltage: 5V-30V
Output voltage: 0.8V-29V
Output current: up to 5A (more than 3A to strengthen the heat)
Conversion efficiency: 95% (highest)
Switching frequency: 300KHz
Output ripple: 50mV (max) 20M bandwidth
Load regulation: ± 0.5%
Voltage regulation rate: ± 2.5%
Operating temperature: -40 ? to +85 ?
Size: 51 * 26 * 14 * (L * W * H) (mm)


1. Module using imported high quality chip, high efficiency (up to 95%), while the heat is small, the maximum can go to 5A current, while with the original TI op amp control output current, the overall output is very stable.
2. This module uses low ESR original Sanyo filter capacitor, you can make the ripple voltage as low as 50mV!
3. The module uses the machine chip, reflow soldering, while each module before shipment have two hours of aging test to ensure high reliability.
Instrument properties
Module Name: Current Voltmeter
Measurement accuracy: 0.1%
Refresh rate: about 200ms / time
Display: Double 4-bit 0.28 "digital tube
Current range: 0A-5A
Working current: less than 15mA
Display color: red
Storage temperature: -10 ? to +65 ?
Input impedance: 50 milliohms
Peripheral size: 51 * 26.3 * 10mm


Features:
1. This module uses high-quality LED digital tube manufacturing, high brightness, even in the sun can clearly show.
2. This module uses the original imported microcontroller sampling and display voltage, and software in a large amount of data processing, so that the display is accurate and stable.
3. The module for the whole chip technology, technology skills, while ultra-small size.


Application:
1. Lithium-ion battery charging: When the lithium-ion battery voltage is relatively low, if the direct use of constant voltage charging, due to the pressure difference, resulting in charging current is too large, leading to battery damage, so the beginning of the battery to use Constant current charging, when the charge to a certain extent automatically switch back to constant voltage charging
2. This module is adjustable buck module, you can adjust the module above the blue adjustable resistor to change the output voltage. Input and output differential pressure is 1V, the minimum output voltage of 0.8V.
3. The IN- (Input Negative), IN + (Positive Input), OUT- (Negative Output), and OUT + (Positive Output) indicated on the module must be connected correctly, otherwise the module may be damaged


Battery charging method:
1. Make sure you need the float voltage and charging current of the rechargeable battery, the module's input voltage;
2. Adjust the constant voltage potentiometer, the output voltage is adjusted to about 5V.
3. With multimeter 10A current block output short-circuit current measurement, while adjusting the constant current potentiometer so that the output current reaches a predetermined charge current value;
4. Charging turn light current default shipping 0.1 times the charging current (constant current value).
5. Adjust the constant voltage potentiometer so that the output voltage reaches the float voltage;
6. Connect the battery, try filling.
(1,2,3,4,5 steps for the module input power, the output does not load the battery.)
LED constant current driver to use:
1. Make sure you need to drive LED operating current and maximum operating voltage;
2. Adjust the constant voltage potentiometer, the output voltage is adjusted to about 5V.
3. With multimeter 10A current block output short-circuit current measurement, while adjusting the constant current potentiometer so that the output current reaches the predetermined LED operating current;
4. Adjust the constant voltage potentiometer so that the output voltage reaches the maximum operating voltage of LED;
5. Connect the LED, test machine.
(1, 2, 3, 4 steps for the module input power, the output does not load the LED lights.)


Communication Protocol Description:
1. This module has the function of communicating with computer. Can facilitate the computer to read the module current and voltage data,
2. The communication protocol is as follows:
Baud rate: 9600 Bps
BB CC ADDR 00 XX XX CRC (Current Return Command)
BB CC ADDR 01 XX XX CRC (voltage return command)
among them
BB CC for the first frame (2 bytes)
ADDR is the module address (1 byte)
00 for reading current command (1 byte)
01 for reading voltage command (1 byte)
XX XX any value (2 bytes)
CRC CRC check (1 byte)


Included:
1 x Dual Display Module