[READY STOCK] Mô Đun Hạ Áp 300w Dc-Dc 7v ~ 40v Sang 0.8v ~ 28v

Features:
Four high frequency capacitors can reduce output ripple and good for stability.
Two independent heat sink design are better for heat dissipation.
The inductor of large sendust core and double copper wiring would improve efficiency and decrease heat.
Widely used for high power LED drive, lithium or lead-acid battery, low voltage system power supply, 6V, 12V, 14V, 24V battery charging and regulated power supply.
When power tube temperature is over 65℃, please add cooling fan to enhance heat dissipation.

Specifications:
Type
Non-isolated step-down module (DC-DC)
Input Voltage
DC 7V to 40V
Output Voltage
DC 0.8V to 28V (continuously adjustable)
Output Current
0.2A to 8A(adjustable, <6A when 24V to 12V), 8A is suggested
Min. Voltage Difference
1V
Max. Output Power
300W
Max. Conversion Efficiency
95%
Frequency
300KHZ
Output Ripple
20M bandwidth
Output Short Circuit Protection
Yes (constant current)
Reverse Electrode Protection
No
Output Backflow Protection
No
Wiring Method
Terminals
No-load Current
20mA (24V switch, 12v)
Load Regulation
± 1% (constant)
Voltage Regulation
±1%
Dynamic Response Speed
5%200uS
Potentiometer Adjustment
Clockwise to increase and counterclockwise to reduce
Operating Temperature
-40℃ to +85℃
Indicator Light
Red color charging; green color charging finished or no load
Constant Current and Constant Temperature Accuracy
<5%, 5A from 25℃ to 60℃
Output Short Circuit Protection
Yes (constant current)
Reverse Input Protection
No
Output Backflow Protection
No
Size
64 x 47 x 23.5mm / 2.52 x 0.85 x 0.92"

Instruction:
Battery Charge:
1. Make sure of the battery float voltage and charging current that you need, as well as the input voltage of the module.
2. Adjust the constant voltage potentiometer and adjust the output voltage to about 5V.
3.Use the multimeter in 8A current scale to measure output short-circuit current, and adjust the
current potentiometer to make the output current to the expected charging current value.
4. Adjust the constant voltage potentiometer to make the output voltage reaches the float voltage.
5. Connected to the battery, try to charge.
(1,2,3,4 steps to connect the power module input,output no-load does not connect battery.)

LED Constant Current Drive:
1. Make sure the operating current and Maximum operating Voltage of the LED you need to drive.
2. Adjust the constant voltage potentiometer, adjust the output voltage to about 5V.
3. Use the multimeter in 8A current scale to measure output short-circuit current, and adjust the current
potentiometer to make sure the output current to the expected LED operating current.
4. Adjust the constant voltage potentiometer to make the output voltage reach the maximum LED operating voltage.
5. Connect LED, test.
(1,2,3,4 steps to connect the power module input, output No-load does not connect LED.)

Package Includes:
1 x Mo