Dc-Dc 9A 300W Dc Step-Down Converter 5-40V To 1.2-35V Power Module 120W 150W Boost Module
(Spot: The current is 8-9A, the input voltage is 40V, and the output voltage is about 35V)
(Due to the discontinuation of the 12A current chip manufacturer, the replacement chip current is reduced from the previous 12A to 8A (the actual test current is about 9A), the input voltage is increased from the previous 32V to 40V, and the output voltage is increased from the previous 28V to 35V. It can be 10 strings of high-power LED power supply. 12A chips will be notified after the arrival of the goods.)
QS-2405CCBD-12A power module
Size: 65(L)*47(W)*23.5(H) mm
Adjustable power supply (12A power enough), high-power LED driver, LED display driver, lead-acid battery charging, lithium battery charging, car power supply, car laptop power supply (buck), regulated power supply, low-voltage system power supply, (such as children The toy car uses 12V battery to step down to 6V), 24V to 12V 12A \\12V to 5V 12A \\24V to 5V 12A \\24V to 19V20V, etc., the application range is very wide.
1. The fixed lamp current is 0.1 times of the constant current value (used to identify whether the battery is full when charging);
2. A dedicated reference IC and high-precision sampling resistor are used to make the constant current more stable (the temperature drift is less than 5% when the constant current is 5A from 20 degrees to 60 degrees). Especially suitable for LED driver
3. The output current is large, the output current can reach 12A, which can meet most needs.
4.4 high-frequency capacitors, effectively reducing output ripple and improving working stability
5. Double heat sink design, independent heat sink for MOS tube Schottky diode, good heat dissipation, no influence on each other
6. Use large-size sendust magnetic ring at any cost to improve work efficiency, and use pure copper double wires to reduce heat generation and improve efficiency.
7. 3296 multi-turn potentiometer, with high voltage and current adjustment accuracy and good stability.
8. Dedicated current sampling resistor High current sampling accuracy, good stability, and low temperature drift. Required for LED.
9. Two-color indicator light, the working status is clear at a glance. Required for charging.
10. Both voltage and current are adjustable, and it is effective as an adjustable power supply. The 12A current is large and the power is sufficient.
Module nature: non-isolated step-down 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 purchasing. (For the time being, only for batch customers, all samples are available in adjustable models)
(3) If you need a higher voltage, please contact me directly
Output current: 12A (The power tube temperature exceeds 65 degrees, please add a fan for heat dissipation, 24V to 12V within 6A, generally without a fan in an open environment)
Constant current range: 0.2-12A (adjustable) (without constant current without this function)
Turning lamp current: constant current value* (0.1), the turning light current is linked with the constant current value, for example, the constant current value is 3A, and the turning light current is set to 0.1 times of the constant current (0.1*3A=0.3A). When the current value is adjusted to 2A, the lamp current at this time is 0.1 times of the constant current (0.1*2A=0.2A).
The second version is fixed 0.1 times (the actual turning lamp current is an approximate value, not a very high value) It is used to indicate whether the charging is full.
Differential pressure: 1V
Output power: The power is about 300W, and the power tube temperature exceeds 65 degrees, please add a fan.
Conversion efficiency: about 95% (the higher the output voltage, the higher the efficiency)
Working frequency: 300KHZ
Output ripple: 20M bandwidth (for reference only)
Input 24V, output 12V 5A, ripple about 50mV (no noise)
Working temperature: industrial grade (-40℃ to +85℃) (please pay attention to the temperature of the power tube in actual use, please strengthen heat dissipation if the temperature is too high)
No-load current: typical 20mA (24V to 12V)
Load adjustment rate: ±1% (constant pressure)
Voltage adjustment rate: ±1%
Constant current accuracy and temperature: actual test, the temperature on the module 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 near the input is voltage adjustment (CV), and the potentiometer near the output is current adjustment (CC).
Indicator light: two-color indicator light, red during charging, green when charging is completed (green if no load is connected), red without constant current.
Output short circuit protection: Yes, constant current (currently set constant current value)
Input reverse connection protection: None,
Output to prevent backflow: None.
Wiring mode: terminal block
Battery charging method of use:
1. Determine the float voltage and charging current of the rechargeable battery you need, 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 a multimeter, and adjust the constant current potentiometer to make the output current reach the predetermined charging current value;
4. Adjust the constant voltage potentiometer to make the output voltage reach the float voltage;
5. Connect the battery and try charging.
(Steps 1, 2, 3, and 4 are for the input of the module to be connected to the power supply, and no-load output to the battery.)
LED constant current drive How to use:
1. Determine the working current and working 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 the 10A current block of a multimeter, 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 and test the machine.
(Steps 1, 2, 3, and 4 are for the module input to connect to the power supply, and the output does not connect to the LED light without load.)
Statement: The output power of this module is not only affected by the load capacity of the module itself, but also affected by various factors such as the front-level power supply and the rear-level load; the following data is the result measured by professional equipment, and other factors are not considered. The power module is a kind of electronic components, please purchase it carefully if you have no electronic professional knowledge.
Module nature: non-isolated boost module
Module size: length 65MM* height 23MM* (width 56.5MM including heat sink)
Input mode: IN+ input positive, IN- input negative
Output mode: OUT+ output positive, OUT- output negative
Wiring mode: welding-free, terminal
Input voltage: 10-32V
Output voltage: (1) Continuously adjustable (12-35V) The default delivery voltage of our shop is 19V
(2) Fixed output (any choice between 12-35V), please tell the shopkeeper when purchasing.
Output current: 6A (MAX)
Input current: 10A (MAX) (please increase heat dissipation if it exceeds 10A)
Output power: natural cooling 100W (MAX), plus fan 150W (MAX)
Easily drive 65W 90W laptop including dual core
Use a 12V battery with an ordinary 19V 3.42A notebook computer The temperature of the module is about 45 degrees
Conversion efficiency: 94% (measured at 16V input and 19V 2.5A output) (for reference only)
Working temperature: industrial grade (-40°C to +85°C) (the ambient temperature exceeds 40°C, please reduce the power to use, or add a fan)
Full load temperature rise: 45℃
No-load current: 25mA typical
Short circuit protection: None (please install an overcurrent protector at the input)
Input reverse connection protection: None, connect a diode in series with the input
Scope of application
1) DIY an output adjustable car power supply, you only need to connect your 12V power supply at the input, you can adjust the output voltage (14-35V) freely and continuously, but the output voltage cannot be lower than the input voltage.
2) Car laptop power supply. The input is connected to your 12V power supply, and the output is adjusted to the voltage of your notebook to work.
3) Boost charger, you can use a 12V power supply to charge a battery higher than 12V, such as a 24V battery.
4) To supply power to your electronic equipment, as long as the voltage is adjusted to the voltage you need and the current does not exceed the rated current, it can work normally.
5) The front-end power supply of the system. When you are working on a project, the input is 10-18V, and your system board needs a power supply of about 24V, and its power is very large. The power of ordinary DC-DC modules is too small , Choosing our module will work directly on the machine without debugging, and easily achieve high-efficiency and high-power boost.