DC-DC Converter 24V to 12V Step Down Power Supply Module DC 7-32V Input QS-2405CCBD-12A


2.95 2.95 Piece 2.95 USD

¥ 20.00

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Brand: QSKJ

Model: QS-2405CCBD-12A

Type Difference: CV only = Constant Voltage only. With CC= Constant Voltage + Constant Current. Pictures are with CC version


  • High output current, the max output current can reach 8A.

  • Four high frequency capacitance, can lower output ripple, enhance the work stabilization.

  • Double heat sink design. MOS schottky diode independent heat sink,which heat dissipation is good,and won’t affect each other.

  • Using large size Sendust Core and double pure copper wiring, improve working efficiency, reduce fever.

  • 3296 multiturn potentiometer,high accuracy voltage and current regulation, good stability.

  • Double color lamp, working condition be clear at a glance

  • Voltage and current are adjustable,wich effect is good.Fixed turn lamp current is 0.1 times the current value ( Used to identify whether the battery is fully charged When charging).

  • Made from a dedicated benchmark IC and high-precision current sensing resistor, proving a more stable constant current, (when 20°C to 100°C constant current 1A, temperature drift less than 1%). Particularly suitable for LED driver.


  • Constant current range: 0.2-8A ( adjustable )

  • Lowest pressure: 1V

  • Output Power: Maximum power is about 200W

  • Conversion efficiency: Up to about 95%

  • Operating frequency: 300KHZ

  • Output ripple: 20M bandwidth

  • Input 24V output 12V 5A ripple around 50mV (Excluding noise)

  • Output short circuit protection : Yes, constant current

  • Input reverse polarity protection: None

  • Output prevent backflow: None

  • Wiring: Terminal

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

  • Load regulation: ± 1% ( constant )

  • Voltage regulation: ± 1%

  • Dynamic response speed: 5% 200uS

  • Size(approx): 65 x 47 x 22mm (L x W x H)

  • Output short circuit protection: Yes,Constant current (the current setting constant current value)

  • Input reverse connect protection: NO

  • Output prevent reverse flow: NO

  • Wiring Method: amphenol connector

  • Input voltage: DC 7-32V 

  • Module properties: Non-isolated step-down constant current, constant voltage module (CC CV) charging module

  • Output voltage: (1)  DC 0.8-28V continuously adjustable. (2)  Fixed output:Choose between 0.8v-28v

  • Output Current: 8A (when power tube's temperature exceeds 65 degrees, please add cooling fan)

  • Indicator: dual color indicator, charging indicator light is red, the green light means fully charged ( No load is green )

  • Operating temperature: Industrial grade (-40 °C to +85 °C) ( please note the actual use of the power tube temperature , high temperature heat strengthened)

  • Potentiometer adjustment direction: clockwise (increase) , counterclockwise (decrease), the potentiometer(CV) closed to the input voltage is used to regulate voltage, the potentiometer(CC) closed to output voltage is used to regulate current (CC)

  • Precision of constant current and temperature: On the actual test, the module temperature from 25 degrees to 60 degrees, the constant current value change is less than 5% (5A constant current value)

  • Turn lamp current: Constant current value * ( 0.1 ) , turn the lamp current and constant value linkage, such as constant current value is 3A, turn the lamp current is set to a constant current is 0.1 times (0.1 * 3A = 0.3A).


  • High-power LED driver.

  • Lithium battery(or lead accumulator) charge.

  • Vehicle-mounted power supply.

  • Low voltage system power supply.

  • 6V, 12V, 14V, 24V battery charge.

  • On-board laptop power supply.

  • regulated power supply.

  • Low voltage power supply system.

Battery charge:

  • Make sure of the battery float voltage and charging current that you need, as well as the input voltage of the module.

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

  • Use the multimeter in 10A current scale to measure output short-circuit current, and adjust the current potentiometer to make the output current to the expected charging 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 to connect the power module input,output no-load does not connect battery.)

LED constant current drive:

  • Make sure the operating current and Max operating Voltage of the LED you need to drive.

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

  • Use the multimeter in 10A current scale to measure output short-circuit current, and adjust the current potentiometer to make sure the output current to the expected LED operating current.

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

  • Connect LED, test. (1,2,3,4 steps to connect the power module input, output No-load does not connect LED.)