Step Down Module Buck (12A 300W)
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৳750
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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
Battery charging method:
- 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.
(Steps 1, 2, 3, and 4 are for module input and power supply, and no load for battery output.)
LED constant current drive use method:
- 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.
(Steps 1, 2, 3, and 4 are for module input and power output, and no output for no-load LED.)
Packing List:
1pc x 12A 300W Step Down Module - (Buck)
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