12A 300W DC-DC Step Down or Buck Module

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 (buck), power supply, low voltage system power supply, (such as children The toy car is stepped down to 6V with a 12V battery, 24V to 12V 12A \\12V to 5V 12A \\24V to 5V 12A \\24V to 19V20V, etc., with a wide range of Applications.

1. Fixed lamp current is 0.1 times the constant current value (used to identify whether the battery is full when charging);
2. A dedicated reference IC and a high-precision sampling resistor are used to make the constant current more stable (less than 5% when the temperature is 20 degrees to 60 degrees at a constant current of 5A). Particularly suitable for LED drive
3. The output current is large and the maximum output current can reach 12A to meet most of the requirements.
4. 4 high-frequency capacitors, effectively reduce the output ripple, improve the stability of the work
5. Dual heat sink design, MOS tube Schottky diode independent heat sink, good heat dissipation, do not affect each other
6. Adopt large-size ferro-silica-aluron magnetic rings at cost, increase work efficiency, and use pure copper double wires to reduce heat and improve efficiency.
7. 3296 multi-turn potentiometer, high voltage and current regulation accuracy, good stability.
8. Dedicated current sampling resistor Current sampling accuracy is high, stability is good, and temperature is small. LED essential.
9. Two-color indicator light, working status at a glance. Charge necessary.
10. The voltage and current are all adjustable, and the adjustable power supply is effective. The current of 12A is large and the power is sufficient.

Module properties: non-isolated step-down constant-current, constant-voltage module (CC CV) charging module
Scope: 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 turbines
Input voltage: 7 -32 V (without constant current 5-32V)
Output voltage: (1) continuously adjustable ( 0.8 -28V )
Fixed output (any choice between 0.8 -28V ) Please tell the shopkeeper when buying. (Temporarily only for volume customers, all samples are adjustable)

Output current: 12A max. (If the temperature of the power tube exceeds 65 degrees, please add heat to the fan. In the open environment of 24V to 12V and less than 6A, you can usually not add a fan)
Constant current range: 0.2-12A (adjustable) ( without this function without constant current)
Turning lamp current: constant current value * (0.1), turning lamp current and constant current value linkage , such as constant current value is 3A, turn lamp current is set to 0.1 times of constant current (0.1*3A=0.3A) , when the constant When the flow value is adjusted to 2A, the turning lamp current is 0.1 times the constant current (0.1*2A=0.2A).
The minor version is fixed 0.1 times (the actual turn-on current is the approximate value is not very accurate) for charging is full of instructions.

The lowest differential pressure: 1V
Output power: The maximum power is about 300W. If the power tube temperature exceeds 65 degrees, please add a fan.
Conversion efficiency: up to about 95% (higher output voltage, higher efficiency)
Working frequency: 300KHZ
Output Ripple: 20M Bandwidth (for reference only)
Input 24V output 12V 5A ripple around 50mV (no noise)
Operating temperature: Industrial grade (-40°C to +85°C) (Please pay attention to the power tube temperature for actual use, if the temperature is too high, please strengthen the heat dissipation)
No-load current: typical 20mA (24V to 12V)
Load regulation: ±1 % (constant pressure)
Voltage Regulation: ± 1%
Constant Current Accuracy and Temperature: Actual test, the module temperature changes from 25 degrees to 60 degrees, the constant current value changes less than 5% (constant current value 5A)Dynamic response speed: 5% 200uS
Potentiometer adjustment direction: clockwise (increase), counterclockwise (decrease) The potentiometer close to the input isvoltage regulation (CV), and the potentiometer close to the output is current regulation (CC) Indicator light: Two-color indicator light, charging indicator light red, charging indicator light is green (do not connect load is green) Indicator light without constant current is red.
Output short circuit protection: Yes, constant current (current setting constant current value)
Reverse input protection: None,
Output prevents backflow: none.
Connection mode: terminal block

1. Make sure that you need to charge the battery’s float voltage and charge current, the module’s input voltage;
2. Adjust the constant voltage leveler to adjust the output voltage to about 5V.
3. Measure the output short circuit current with the current meter of the multimeter 10A, and adjust the constant current potentiometer to make the output current reach the predetermined charging current value.
4. Adjust the constant voltage leveler so that the output voltage reaches the float voltage;
5. Connect the battery and try charging.

1. Make sure you need to drive the LED’s operating current and maximum operating voltage;
2. Adjust the constant voltage leveler to adjust the output voltage to about 5V.
3. Measure the output short-circuit current with the current meter of the multimeter 10A, and at the same time adjust the constant-current potentiometer to make the output current reach the predetermined LED operating current;
4. Adjust the constant voltage leveler so that the output voltage reaches the maximum LED operating voltage;
5. Connect the LED, test machine.

1Pc * 12A 300W DC-DC Step Down or Buck Module