300W XL4016 DC-DC Max 9A Step Down Buck Converter 5-40V To 1.2-35V Adjustable Power Supply Module LED Driver

(Spot: current is 8-9A, input voltage is 40V, output voltage is 35V or so)

(Due to the 12A current chip manufacturers discontinued, the replacement chip current from the previous 12A reduced to 8A current (the actual test current in 9A or so), the input voltage from the previous 32V increased to 40V, the output voltage from the previous 28V increased to 35V. 10 strings of high-power LED power. (We will notify you when the 12A chip arrives).

Dimensions: 65(L)*47(W)*23.5(H) mm

Typical Applications:

Adjustable power supply (12A power enough), high-power LED driver, LED display driver, lead battery charging, lithium battery charging, car power supply, car laptop power supply (step-down), regulated power supply, low-voltage system power supply, (such as children's toy car with 12V battery step-down to 6V), 24V to 12V 12A \\\\12V to 5V 12A \\\\24V to 5V 12A \\\\24V to 19V20V and so on, the application range is very wide.

1. fixed turn lamp current 0.1 times of the constant current value (used to identify whether the battery is full when charging);

2, the use of special reference IC, and high-precision sampling resistor, so that the constant current is more stable, (20 degrees to 60 degrees constant current 5A when the temperature drift is less than 5%). Especially suitable for LED driver

3. Large output current, the output current can reach 12A, to meet most of the needs.

4.4 high-frequency capacitors, effectively reduce output ripple, improve work stability

5. Double heat sink design, MOS tube Schottky diode independent heat sink, good heat dissipation, do not affect each other

6. Spare no expense to use large size ferrosilicon aluminium magnetic ring, improve efficiency, and use pure copper double line and spare, reduce heat, improve efficiency.

7.3296 multi-turn potentiometer, voltage and current adjustment with high precision and good stability.

8. Special current sampling resistor Current sampling precision and stability, temperature drift is small. LED.

9. Dual-colour indicator light, working status at a glance. Charge.

10. Voltage and current are adjustable, do adjustable power supply effect is good, 12A current, power.

Module parameters

Module nature: non-isolated buck constant current, constant voltage module (CC CV) Charging module

Scope of application: high-power LED constant-current drive, lithium battery charging (including ferroelectric), 4V, 6V, 12V, 14V, 24V battery charging, nickel-cadmium nickel-metal hydride battery (battery pack) charging, solar panels, wind generators

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

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

(2) Fixed output (any choice between 0.8-28V), please tell the shopkeeper when you buy. (Temporarily only for batch customers, samples are all sent adjustable type)

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

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

Constant current range: 0.2-12A (adjustable) (without constant current without this function)

Turning lamp current: constant current value * (0.1), turning lamp current and constant current value linkage, such as constant current value of 3A, turning lamp current is set to constant current 0.1 times (0.1 * 3A = 0.3A), when the constant current value is adjusted to 2A, this time the turning lamp current is 0.1 times the constant current (0.1 * 2A = 0.2A).

The second version is fixed 0.1 times (the actual turn lamp current is the approximate value is not very) for charging whether full indication.

Differential pressure: 1V

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

Conversion efficiency: 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 (excluding noise)

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

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

Load adjustment rate: ±1% (constant voltage)

Voltage adjustment rate: ± 1%

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

Dynamic response speed: 5% 200uS

Direction of potentiometer adjustment: clockwise (increase), counterclockwise (decrease) The potentiometer close to the input is for voltage adjustment (CV), and the potentiometer close to the output is for current adjustment (CC).

Indicator light: two-colour indicator light, red during charging, green after charging (green without load), red without constant current.

Output short-circuit protection: yes, constant current (current setting constant current value)

Input reverse connection protection: no.

Output reverse current protection: No.

Wiring method: terminal block

Battery charging Method of use:

1. Determine the float voltage and charge current of the battery you need to charge, and the input voltage of the module;

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

3. Measure the output short-circuit current with the 10A current block of multimeter, and adjust the constant current potentiometer to make the output current reach the predetermined charging current value;

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

5. Connect the battery, test charging.

(1, 2, 3, 4 steps for the module input connected to the power supply, the output no-load not connected to the battery.)

LED constant current driver Usage:

1. Determine the operating current and operating voltage you need to drive the LED;

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

3. Measure the output short-circuit current with a multimeter 10A current block, and adjust the constant current potentiometer to make the output current reach the predetermined LED working current;

4. Adjust the constant voltage potentiometer to make the output voltage reach the LED working voltage;

5. Connect the LED, test machine.