XL4015 Ayarlanabilir Voltaj ve Akım Kontröllü Güç Kaynağı Voltmetre Ampermetre Göstergeli
4-38V To 1.25-36V 0.2A to 5A Step-Down Güç Kaynağı ( Voltaj Düşürür )
The XL4015/XL4005 is a 180 KHz fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 5A load with high efficiency, low ripple and excellent line and load regulation. Requiring a minimum number of external components, the regulator is simple to use and include internal frequency compensation and a fixed-frequency oscillator in addition of adjustable current potentiometer.
Features:
- Input voltage: DC 4.0 ~ 38V
- Input voltage range:4-38VDC(Note:input voltage not exceeding 38V)
- Output voltage range:1.25-36VDC adjustable
- Output current: 5A
- Output power: 75W more than 50W, Please enhance heat dissipation
- Operating temperature: -40 ~ +85 degrees
- Operating frequency: 180KHz
- High efficiency up to 96%
- Built in thermal shutdown function
- Built in current limit function
- Built in output short protection function
- Dimensions: 3.9 * 2.0 * 1.8cm
Application
1. Use as a normal blood pressure modules with overcurrent protection capability
Instructions:
(1) constant pressure regulator potentiometer, the output voltage reaches the voltage value you want
(2) 10A current with a multimeter measuring the output short circuit current file (directly to the two leads to the output can), while adjusting the constant current potentiometer allows the output current reaches a predetermined value of overcurrent protection. (Such as the current value of the multimeter displays 4A, then you can use the module to the maximum current 4A, 4A current to constant voltage constant current when the red light is on, otherwise the light off)
Note: When used in this state, since the output of 0.05 ohm current sense resistor, there will be 0 ~ 0.3V voltage drop after connected to the load, this is normal! This drop is not being pulled down your load, but down-sampling resistor.
2. Use as a battery charger
Module without constant function can not be used to charge the battery, since the end of the battery and charger power consumption big difference between charging current is too large, resulting in damage to the battery, so when you want to start the battery using a constant current charging, when charging to a certain extent automatically switches back to constant voltage charging.
Instructions:
(1) Make sure you need to recharge battery float voltage and charging current; (if lithium argument is 3.7V / 2200mAh, then float voltage is 4.2V, the maximum charging current 1C, namely 2200mA)
(2) under no-load conditions, the multimeter to measure the output voltage of the constant voltage potentiometer to adjust the output voltage reaches the float voltage; (if rechargeable lithium battery to 3.7V, the output voltage can be adjusted to 4.2V)
(3) 10A current with a multimeter measuring the output short circuit current file (directly to the two leads to the output can), while adjusting the constant current potentiometer allows the output current reaches a predetermined charge current value;
(4) Charging turn lamp current default factory setting is 0.1 times the charging current; (the battery during charging current is gradually reduced, gradually converted to constant voltage charging by the constant current charging, if the charging current setting is 1A, then when Charge current is less than 0.1A when the blue light off, green light is on, then the battery is fully charged)
(5) connected to the battery charge.
(1,2,3,4 step is: input termination power, output unloaded battery is not connected)
3. Use a high-power LED constant current driver module
(1) determine the work you need to drive the LED current and the maximum operating voltage;
(2) No-load condition, the multimeter to measure the output voltage of the constant voltage potentiometer to adjust the output voltage reaches the LED maximum working voltage;
(3) 10A current with a multimeter measuring the output short-circuit current gear while adjusting the constant current potentiometer allows the output current reaches a predetermined LED working current;
(4) connected to the LED, the test machine.
(Steps 1 through 3 are: input connected to the power supply, the output load is not connected LED.)
Note: This module is more than 3A, 35W in use, to enhance heat dissipation! ! !
Paket İçeriği :
- 1 Adet XL4015 ACAV 5A Voltaj Düşürücü Voltmetre Ampermetre Göstergeli