Constant voltage, constant current, adjustable automatic booster power supply module Anti -voltage voltage voltage voltage pressure module charging SJVA

Introduction: The wide voltage input 4.8-30V and the wide voltage output of 0.5-30V, which can increase both voltage and lower voltage. For example, if you adjust the output voltage of 18V, then the input voltage 5-30V changes casually, and the output will be 18V constant; thenFor example, you enter 12V and adjust the output of 0.5-30V to adjust the potentiometer.

High power, high efficiency, and performance better than the XL6009/LM2577 solution.Adopt external high -power MOS, large packaging large current, high current high -pressure Schottky diode.Increase heat dissipation and copper.

The current can be set to restrict the output current, constant current drive, battery charging and other occasions.

Combined with output anti -inverted irrigation function, there is no need to add anti -inverted diode when charging the battery.

Product parameters:

Input voltage: 4.8-30V

Output voltage: 0.5-30V

Output current: It can work in 3A for a long time, and enhance the heat dissipation to reach 4A

Output power: natural heat dissipation 35W, strengthen heat dissipation 60W

Conversion efficiency: about 88%

Short -circuit protection: Yes

Working frequency: 180kHz

Size: length*width*height 68*37*22mm, install aperture diameter 3mm

Weight: 38.7g

How to use:

1. Use as a normal lifting and booming module with overcurrent protection capabilities

How to use:

(1) Adjust the CV constant voltage potentiometer so that the output voltage reaches the voltage value you want

(2) Use a multimeter 10A current file to measure the short -circuit current (the two tablets can be directly received to the output terminal), and at the same time, the CC constant current potentiometer makes the output current reaches the predetermined overcurrent protection value.(For example, the current value displayed by the multimeter is 2A, so when you use the module, the large current can only reach 2A, and the current red constant stream indicator light is on when the current reaches 2A, otherwise the indicator light will be extinguished))

Note: When using in this state, due to the current sampling resistor of 0.05 Euros of 0.05 Euros, there will be a voltage drop of 0 ~ 0.3V after the load is connected. This is a normal phenomenon!This pressure drop is not lowered by your load, but to the sampling resistance.

2. Use as a battery charger

The module without constant current function cannot be used to charge the battery. Because the battery consumed by the battery and the charger is very large, the charging current is too large and the battery is damaged.Flow charging, automatically switch back to constant voltage charging when charging to a certain degree.

How to use:

(1) Determine the floating charging voltage and charging current of the battery; (if the lithium battery parameters are 3.7V/2200mAh, then the floating charging voltage is 4.2V, the large charging current is 1C, which is 2200mA)
(2) Under the air load conditions, the universal meter measuring the output voltage, adjust the constant voltage potentiometer to achieve the output voltage to the floating charging voltage; (if the 3.7V lithium battery is charged, the output voltage can be adjusted to 4.2V)
(3) Use a multimeter 10A current file to measure the output short -circuit current (just receive the two tablets to the output terminal), and adjust the constant current potentiometer to achieve the output current to reach the predetermined charging current value;
(4) The current charging rotor current is 0.1 times the charging current; (the current of the battery is gradually reduced during the charging process, and the constant current charging to constant voltage charging is gradually changed.When the charging current is less than 0.1A, the blue light is destroyed and the green light is on. At this time, the battery is charged)
(5) Connect the battery and charge.

(Step 1, 2, 3, 4 are: input terminal connection power, the output end is empty and does not connect the battery)

3. Use as a high -power LED constant current driver module

(1) Determine that you need to drive the working current and high working voltage of LED;

(2) Under the air load conditions, the universal meter measuring the output voltage, adjust the constant voltage potentiometer to make the output voltage reach the LED high operating voltage;

(3) Use a multimeter 10A current file to measure the output short -circuit current, and adjust the Hengli potentiometer to make the output current reaches the predetermined LED working current;

(4) Connect the LED, test machine.

(Step 1, 2, 3 are: input the power supply, the output is not connected to the LED light.)

Note: When this module is used more than 3A and 35W, please strengthen the heat dissipation!IntersectionIntersection

Note:

1. The module input in-prohibition and output OUT-short connection, otherwise the constant current function will fail.

2. Please ensure that the power of power supply power is greater than the power required for the output load!

3. Input the module without input anti -anti -counter -countering function, please pay attention to the positive and negative electrode direction of the power supply power supply.

4. If the module wants to fully load the output, the input voltage is more than 8V. When the input voltage is 5V, the output power is about 15W.The module current value is 4A, which is limited to large output power, such as output 17V, and the current should not be greater than 2A.

5. Module with short -circuit protection function.

6. The module has the input arrears protection function. The default is about 4.2V. After this value is lower, the output will be automatically disconnected. The input voltage can be started after recovery.

7. The module contains three indicators, the constant voltage constant stream state indicator (red, the constant current mode is on), the charging indicator (blue), full of instructions (green, the current of the turntable current is 1/10 of the current).Essence