หมวดหมู่ | Module ปรับแรงดัน DC to DC |
ราคา | 440.00 บาท |
น้ำหนัก | 10 กรัม |
สถานะสินค้า | พร้อมส่ง |
ลงสินค้า | 13 ต.ค. 2561 |
อัพเดทล่าสุด | 13 ต.ค. 2561 |
จำนวน | ชิ้น |
2. Product parameters:
Input voltage: 5.3 -32V ( limit 35V; minimum input 4V to achieve step-down, but the input voltage is less than 5.3V, the voltage and current measurement is not accurate )
Output voltage: 1.2-32V ( must ensure that the input voltage is higher than the output voltage, the minimum differential voltage is 0.8V )
Output current: can work stably at 8A for a long time , and can reach 12A under enhanced heat dissipation
Output power: natural heat dissipation 120W (within 8A), enhanced heat dissipation 160W
Voltage display: resolution 0.05V, range 0-32V
Current display: resolution 0.01A, range 0-12A
Conversion efficiency: about 96%
Working current: about 25mA
Soft start: Yes (large power with load module may fail when starting)
Input reverse connection protection: Yes
Output anti-backflow: no ( if charging the battery, first power on the module and then connect the battery, and ensure that the battery voltage is lower than the output voltage; if there are conditions, please connect the anti-backflow diode in the output positive pole )
Short circuit protection: Yes
4. How to use:
4.1. Use as a normal buck module with overcurrent protection
(1) Adjust the CV constant voltage device so that the output voltage reaches the voltage you want.
(2) Firstly rotate the CC current adjustment potentiometer counterclockwise for more than 10 turns, then use the multimeter 10A or 20A current file to measure the output short-circuit current (directly connect the two test leads to the output terminal), adjust the CC constant current potential clockwise. The output current reaches the overcurrent protection value you want to set. (For example, if the current value displayed by the multimeter is 2A, then the maximum current can only be 2A when you use the module, and the red constant current indicator will be on when the current reaches 2A, otherwise the indicator will be off)
4.2. Use as a battery charger
Modules without constant current function cannot be used to charge the battery. Because the voltage difference between the battery and the charger that consumes electricity is too large, the charging current is too large, causing damage to the battery. Therefore, the battery should be used at the beginning. Stream charging, automatically switch back to constant voltage charging when charging to a certain extent.
(1) Determine the float voltage and charge current of the rechargeable battery you need; (if the lithium battery parameter is 3.7V/2200mAh, then the float voltage is 4.2V, the maximum charge current is 1C, ie 2200mA)
(2) Under no-load conditions , the multimeter measures the output voltage, adjusts the constant voltage position device to make the output voltage reach the float voltage; (If charging the 3.7V lithium battery, adjust the output voltage to 4.2V)
(3) Turn the CC current adjustment potentiometer counterclockwise first. 10 laps or more, then use the multimeter 10A or 20A current file to measure the output short-circuit current (directly connect the two test leads to the output terminal), adjust the CC constant current potentiometer clockwise to make the output current reach thepredetermined charging current value;
(4) Connect the battery and charge it.
(Steps 1, 2, and 3 are: input terminal is connected to the power supply, and the output terminal is not connected to the battery at no load)
4.3. Use as a high power LED constant current drive module
(1) Determine the operating current and maximum operating voltage at which you need to drive the LEDs;
(2) Under no-load conditions, the multimeter measures the output voltage, and adjusts the constant voltage position device to make the output voltage reach the maximum working voltage of the LED;
(3) Firstly rotate the CC current adjustment potentiometer counterclockwise for more than 10 turns, then use the multimeter 10A or 20A current file to measure the output short-circuit current (directly connect the two test leads to the output terminal), adjust the CC constant current potential clockwise. The device causes the output current to reach a predetermined LED operating current;
(4) Connect the LED and test the machine.
(Steps 1, 2, and 3 are: input is connected to the power supply, and the output is not connected to the LED light.)
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