XL4015 ACAV 5A Step-Down Converter

XL4015 Adjustable Voltage and Adjustable Current Controlled Power Supply ( Steps Voltage Down )

38V 5A  Step-Down Battery Charge Led Driver

        It is a power supply module with adjustable voltage and current. The XL4015 IC is used on the board. It is a ready circuit whose output voltage can be adjusted very precisely (for example 5.05V) between 1.25V and 36V. The input voltage goes up to 38V at most. It has the capacity to drive a 5A load. Thanks to its very small dimensions, it is suitable for use in all kinds of circuits.

     The input voltage must always be higher ( Min 1.5V ) than the output voltage. With this product you can only step the voltage down. When you first get the product, you may need to turn it 20 full turns counterclockwise to lower the voltage. Running the module with high currents requires the need for extra external cooling.

Features:

•     IC: XL4015
•     Input voltage: DC 4V / 38V  ( the product is damaged above 38V )
•     Output voltage: Adjustable DC 1.25-36V ( Attention = The input voltage must be 1.5V higher than the output. )
•     Output current: Adjustable 5A ( an external heatsink must be used above 3A. )
•     Current adjustment range:   0-5A  1% -  100%
•     Output power: 75W ( you need to use an external heatsink above 35W. )
•     2-way terminal block input output sockets
•     Left pot: Voltage adjustment
•     Right pot: Current adjustment
•     It can charge batteries in the 1.23V /  28V range.
•     Constant current indicator led
•     Battery charging in progress indicator led
•     Full charge indicator led
•     Can be used as a led driver
•     Switching frequency: 180 KHz
•     Operating temperature: -20C /  85C
•     Efficiency: higher than 95%
•     Over temperature protection
•     Over current protection
•     Short circuit protection
•     4 pcs 2.5mm mounting holes
•     Dimensions: 27mm x 52mm x 14mm
•     Weight 18gr

Led Description:

•     Green: Charge finished indicator led.
•     Blue: Charging in progress indicator led
•     Red: Constant current status indicator led

Pin Description:

Pot Usage:

• The pots are multi-turn. They can turn 20-30 turns in both directions. Usually the mistake of turning very little and thinking the products do not work can be made. It is necessary to turn a lot to see the effect.
• Turning clockwise; increases the value for the relevant parameter. For example the voltage increases.
• Turning counterclockwise; decreases the value for the relevant parameter. For example the voltage drops.

Battery Charging Usage Settings:

•     Remember that in the city mains there is continuously enough energy to charge any battery you use in 1 second. Nevertheless we charge batteries over long periods.
•     When batteries are depleted, their voltages are at low levels. If you connect a battery directly to a power supply without current limiting while charging, it charges with the maximum current the supply can give. This situation damages the battery. The battery may explode due to excessive heating. In addition, if batteries are charged with a current higher than the current specified by the manufacturer, the battery life decreases. For example, a battery that can be charged and discharged 500 times in total will become unusable after a much lower number of uses. For this reason, batteries must be charged with a charging current at a ratio such as 1/10 or 2/10 of their current capacities.
•     Calculate / determine / learn the required charging voltage and charging current for the battery to be charged.
•     Current adjustment: Set the output voltage to 5V. Set the voltmeter as an ammeter and connect the probes to the module output. The device will be short circuited through the ammeter. At this stage, by seeing the current on the ammeter, adjust it to the required current value with the current adjustment pot.
•     Then disconnect the voltmeter from the module. By bringing the module to the voltage you want with the voltage pot, you can use it with the output current you determined in the previous stage.

LED Driver Usage Settings:

•     Before using the module, calculate / determine / learn the led driving voltage and current.
•     Current adjustment: Set the output voltage to 5V. Set the voltmeter as an ammeter and connect the probes to the module output. The device will be short circuited through the ammeter. At this stage, by seeing the current on the ammeter, adjust it to the required current value with the current adjustment pot.
•     Then disconnect the voltmeter from the module. By bringing the module to the voltage you want with the voltage pot, you can use it with the output current you determined in the previous stage.

Package contents :

•     1 pcs XL4015 ACAV 5A Step-Down Converter