XL4015 Step Down DC Module with CV/CC Control

Description

The XL4015 is an adjustable DC-DC Step-Down power supply buck converter module with adjustable constant current (cc) and constant voltage (cv) adjustment.

The module is a 300KHz set frequency step-down PWM buck DC-DC module that can handle an adjustable load range of 0-5A (maximum).

The XL4015 5A Adjustable CC CV Step Down DC Power Supply Module operates with high efficiency, low ripple and great line and load regulation.

The module can step down the input voltage to a range of 0.8V – 30V DC at up to 5A.

Features:

• Adjustable Constant Current
• Adjustable Constant Voltage
• Current Limit Function
• Output Short Protection

Specifications:

• Input Voltage: 8Vdc~36Vdc.
• Output voltage: 1.25Vdc~32Vdc.
• Output current: Adjustable maximum 5A.
• Voltage Regulation: ± 2.5%
• Load Regulation: ± 0.5%
• Output ripple: 50mV (max) 20M bandwidth
• Switching frequency: 300KHz
• Conversion efficiency: 95% (the highest)
• Rectification: non-synchronous rectification
• Module Properties: non-isolated constant current and voltage module.
• Size: 51×26.3×14 (LxWxH) (mm).
• Operating Temperature: -40 °C to +85 °C

As you can see, apart from the input and output screw terminal connectors, there are two multiturn trimpots to adjust the output voltage and output current. Further, there are three LED indicators – the first one near the input connector is the constant-current (cc) indicator, while next two LEDs are intended mainly for battery charging applications (battery charging and battery full indicators). However, when used as a general-purpose power supply, the battery charging indicator LED will work as a ‘load-on’ annunciator.

Slowly turning the voltage adjustment (V-ADJ) trimpot clockwise will raise the output voltage gradually, and a counterclockwise rotation will lower it. Likewise, clockwise turning of the current adjustment (I-ADJ) trimpot increases the current limit while counterclockwise action decreases the current limit. It’s advised to adjust the voltage level at first, and then the current level (this fine-tuning procedure will be discussed in detail later).