DC-DC 7-35V to 1.25-30V CC CV LED Driver Buck Converter Power Supply Charging Step Down Module

Specifications:

 

Input voltage: 7-35V

Output voltage: 1.25-30V

Output Current: Max 3A ( If more than 15W, please install the heat sink, this item do not include heat sink)

Constant current range :0-3A (adjustable)

Min Voltage pressure: 2V

Output power: natural cooling 15W

Conversion efficiency: 85% (the higher the output voltage, the higher the efficiency

Operating Temperature: Industrial (-40°c to +85°c) (if ambient temperature exceeds 40 °c, please lower power use, or to enhance heat dissipation)

Full load temperature rise: 45°c

No-load Current: typical 10mA (12V to 4.2V)

Load Regulation: ± 1%

Voltage Regulation: ± 0.5%

Current Accuracy and temperature: Actual Testing, Temperature changes from 20 degrees To 100 degrees, Constant current value change Less than 1% (constant current value 1A)

Dynamic response speed: 5% 200uS

Potentiometer adjustment direction:Clockwise (increase),Counterclockwise (decrease)

Indicator LED: Charging LED Red, Full Charge LED Green

Output Short-circuit Protection:YES

Input Reverse Polarity Protection:YES

Output Prevent Countercurrent: YES

 

Battery Charging Method:

 

1. Make sure the recharge battery float voltage and charge current, input voltage of the module.

2. adjust constant voltage regulator, the output voltage about 3V.

3. With a multimeter ( to 10A) Measuring output Short-circuit current, Also adjust the constant regulator allows Output current gets a predetermined charge current value;

4. Adjust Constant regulator allows Output voltage gets the float voltage;

5. connected to the battery, try charging.

(1,2,3,4 step input connect power, output do not connect battery.)

 

LED Constant Current Driver Usage:

 

1. Make sure LED current and the maximum operating voltage;

2. adjust constant voltage regulator, the output voltage about 3V.

3. With a multimeter ( to 10A) Measuring output Short-circuit current, Also adjust the constant regulator allows Output current gets a predetermined LED working current value;

4. Adjust Constant regulator allows Output voltage get LED maximum working voltage;

5. Connected to the LED, test.

(1,2,3,4 take steps input connect power, output do not connected LED.)

 

Applications:

 

Battery charger (including ferroelectric), 4V, 6V, 12V, 14V, 24V battery charging, nickel-cadmium nickel-metal hydride batteries (battery) charger, solar panels, wind generators.

Solar Panel, Wind generator voltage regulator, Car Power Supply.

 

Package Includes:

 

1 x DC-DC 7-35V to 1.25-30V Converter Power Supply Module