Adjustable Power Module / 8A Buck 24V Turn 12V / LED Driven w/ Constant Current

• Model Number:28284
• Type:Power Management Development Boards and Kits
• Place of Origin:China
• Color:blue
• Weight:0.0

Adjustable Power Module / 8A Buck 24V Turn 12V / LED Driven w/ Constant Current

Module parameters

Modular nature: non-isolated step-down constant current, constant voltage module (CC CV) charging module

Applications: High-power LED constant current drive, lithium battery charging (including ferroelectric), 4V, 6V, 12V, 14V, 24V battery charging, nickel-cadmium nickel-metal hydride batteries (battery pack) charging, solar panels, wind turbines

Input voltage: 7-32V (without constant current 5-32V)

Output voltage: (1) continuously adjustable (0.8-28V)

          (2) fixed output (0.8-28V between any choice), please tell the treasurer when buying. (For the time being only for bulk customers, all the sample adjustable type)

           (3) If you need higher voltage please contact me directly

Output current: up to 12A (power tube temperature exceeds 65 degrees please add fan cooling, 24V to 12V 6A or less open environment generally can not fan)

Constant current range: 0.2-12A (adjustable) (no constant current without this function)

Turn current: constant current value * (0.1), turn the lamp current and constant current value linkage, such as the constant current value of 3A, turn the lamp current is set to constant current 0.1 times (0.1 * 3A = 0.3A), when the constant When the flow rate is adjusted to 2A, the turn lamp current is 0.1 times the constant current (0.1 * 2A = 0.2A).

 The secondary version is fixed for 0.1 times (the actual turn lamp current is probably not very accurate) is used to charge if the fill is full of instructions.

Minimum pressure difference: 1V

Output power: maximum power of about 300W, power tube temperature over 65 degrees please add fan.

Conversion efficiency: up to about 95% (the higher the output voltage, the higher the efficiency)

Operating frequency: 300KHZ

Output ripple: 20M bandwidth (for reference only)

Input 24V output 12V 5A ripple 50mV or so (no noise)

Operating temperature: industrial grade (-40 ℃ to +85 ℃) (the actual use, please pay attention to the power tube temperature, the temperature is too high, please strengthen the heat)

No-load current: typical 20mA (24V to 12V)

Load regulation: ± 1% (constant voltage)

Voltage regulation: ± 1%

Constant current accuracy and temperature: the actual test, the module temperature from 25 degrees to 60 degrees, constant current value of less than 5% (constant current value of 5A)

Dynamic response speed: 5% 200uS

Potentiometer adjustment direction: clockwise (increase), counterclockwise (reduced) close to the input potentiometer for voltage regulation (CV), close to the output of the potentiometer for the current regulation (CC)

Indicator light: two-color indicator light, red light in charge, charging complete indicator green (no load is green) without constant current indicator light is red.

Output short circuit protection: Yes, constant current (current constant current setting)

Input Reverse Protection: None,

Output to prevent backflow: none.

Wiring method: terminal block

Battery charging method:

1. Make sure you need to recharge the battery's float voltage and charge current, the module's input voltage;

2. Adjust the constant voltage potentiometer, adjust the output voltage to about 5V.

3. With the multimeter 10A current block measurement output short-circuit current, while adjusting the constant current potentiometer so that the output current reaches a predetermined charge current value;

4. Adjust the constant voltage potentiometer so that the output voltage reaches the float voltage;

5. Connect the battery, try charging.

(1, 2, 3, 4 steps for the module input power supply, the output is not connected to the battery.)

LED constant current drive use:

1. Make sure you need to drive the LED's operating current and the maximum operating voltage;

2. Adjust the constant voltage potentiometer, adjust the output voltage to about 5V.

3. With the multimeter 10A current block measurement output short-circuit current, while adjusting the constant current potentiometer so that the output current to a predetermined LED operating current;

4. Adjust the constant voltage potentiometer to make the output voltage to LED maximum operating voltage;

5. Connect the LED, test machine.

(1, 2, 3, 4 steps for the module input power supply, the output no load LED lights.)