DC-DC Buck Converter 7-35V to 1.25-30V Step Down Power Module QS-2405CCBDA-15W

Brand: QSKJ

Model:  QS-2405CCBDA-15W

Features:

• Input voltage:DC 7-35V

• Output voltage:DC 1.25-30V(Continuously adjustable)

• Output current:Max 3A(high than 15W need heat sink)

• Constant current range:0-3A(Adjustable)

• Transfers lamp electric current:Constant current value * 0.1.

• The lowest voltage difference:2V

• Output power: natural cooling 15W, add heat sink 25W.

• Conversion efficiency:Max 90%(the higher output voltage,the higher efficiency)

• Output ripple:20M bandwidth (only for reference)

• Input 12V output 5V 3A 60mV(MAX)

• Full load temperature rise:45°C

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

• Load regulation:±1%

• Voltage Regulation:±0.5%

• Dynamic response speed:5% 200uS

• Output short circuit protection:Yes,Constant current value.

• Input reverse polarity protection:Yes.

• Output backflow prevention:Yes.Series connection backflow prevention diode in internal.

• Wiring: Welding,Plus pin can be directly soldered to the PCB.

• Size:49(L)*23.4(W)*11.4(H) mm(Exclude potentiometer)

• Module Properties: non-isolated step-down constant current, constant voltage module(CC CV) charging module.

• Indicator: two-color indicator, when charging indicator is red, charging is completed indicator is green(no load connect then the indicator is green).

• Potentiometer adjustment direction: clockwise (increase), counterclockwise (decrease) near the potentiometer input is a voltage regulator (CV), near the potentiometer output is a current regulator (CC).

• Constant current accuracy and temperature:The actual test, the module temperature changes from 20 degrees to 100 degrees, the constant current value varies by less than 1% (constant value 1A)

• Operating temperature: Industrial (-40 °C to +85 °C) (ambient temperature exceeds 40 degrees, lower power use, or to enhance heat dissipation)

Battery charging method:

• You need to Confirm the battery float voltage and charging current, the input voltage of the module.

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

• Use multimeter 10A measuring the output short-circuit current,then adjust the constant current potentiometer to make the output current reaches a predetermined charge current value.

• Adjust the constant voltage potentiometer to make the output voltage reaches the float voltage.

• Connected to the battery, try to charge. (1, 2, 3, 4 steps for the module input power, output no-load is not connected to the battery).

LED constant current drive method:

• You need to Confirm LED drive working current and maximum operating voltage

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

• Use multimeter 10A measuring the output short-circuit current,then adjust the constant current potentiometer to make the output current reaches LED working current.

• Adjust the constant voltage potentiometer to make the output voltage reaches LED maximum operating voltage.

• Connect LED,Try (1, 2, 3, 4 steps for the module input power, output no-load is not connected to the LED lights)

Applications:

• High Power LED constant current Driver

• Lithium battery (including ferroelectric) Charging,

• 4V,6V,12V,14V,24V battery charging,

• Nickel cadmium nickel hydrogen battery charging,

• Solar panels,

• Wind turbines.