XL4016 step-down DC/DC converter 8A XL4016E1

XL4016 DC-DC converter circuit mounted board

XL4016 step-down DC/DC converter 8A features a fixed 180kHz switching frequency and a high efficiency up to 94%. The xl4016 also provides various protection functions such as over-current protection, over-temperature protection, and under-voltage lockout.

The xl4016 circuit consists of four main components: the xl4016 IC, an inductor, a capacitor, and a potentiometer. The inductor and the capacitor form a LC filter that smooths out the output voltage and reduces ripple. The potentiometer adjusts the feedback voltage of the xl4016 IC, which determines the output voltage according to the formula: Vout = 0.8 * (1 + R1/R2), where R1 is the resistance of the potentiometer and R2 is the resistance of the feedback resistor.

The electrical schematic of the DC-DC converter is shown in the figure below:

Xl4016 Step-Down Dc-Dc Converter 8A Schematic
Xl4016 Step-Down Dc-Dc Converter 8A Schematic

The xl4016 circuit can be used for various applications that require a low-voltage and high-current power supply, such as LED drivers, battery chargers, solar panels, and motor drivers. The xl4016 circuit is easy to build and requires only a few external components. However, some precautions should be taken when using the xl4016 circuit, such as:

Get new posts by email:
  • Do not exceed the maximum input voltage of 40V or the maximum output current of 8A
  • Use a heat sink for the xl4016 IC if the power dissipation is high.
  • Use a low-ESR capacitor for the output filter to reduce ripple and noise.
  • Use a high-quality inductor with low DC resistance and high saturation current.
  • Avoid short-circuiting or reverse-connecting the input or output terminals of the xl4016 circuit.

The xl4016e1 module is based on the XL4016E1 chip, which is a synchronous rectification PWM controller with low RDS(on) internal power MOSFETs. The module has a potentiometer to adjust the output voltage from 1.25V to 36V, and a LED display to show the input or output voltage. The module also has a heat sink and a fan to dissipate the heat generated by the high current.

The xl4016e1 module is easy to use: you just need to connect the input voltage (between 8V and 36V) to the IN+ and IN- terminals, and the output load (up to 8A) to the OUT+ and OUT- terminals. You can use the switch on the module to select whether you want to see the input or output voltage on the display. You can also use the potentiometer to adjust the output voltage to your desired level.

Printed circuit board suggestion for assembly

Xl4016 Step-Down Dc-Dc Converter 8A Component Viewer
Xl4016 Step-Down Dc-Dc Converter 8A Component Viewer
Xl4016 Step-Down Dc-Dc Converter 8A Pcb Bottom
Xl4016 Step-Down Dc-Dc Converter 8A Pcb Bottom
Xl4016 Step-Down Dc-Dc Converter 8A Pcb Topo
Xl4016 Step-Down Dc-Dc Converter 8A Pcb Topo

The xl4016e1 module has some advantages over other DC-DC converters:

  •  It has a high efficiency of up to 96%, which means less power loss and less heat generation.
  • It has a wide input and output voltage range, which makes it suitable for various applications.
  • It has a low dropout voltage of about 0.5V, which means it can still work even when the input voltage is close to the output voltage.
  • It has a built-in fan and heat sink, which can prevent overheating and improve reliability.

However, the xl4016e1 module also has some disadvantages:

  •  It is relatively large and heavy, which may not be ideal for compact or portable projects.
  •  It is relatively noisy due to the fan, which may be annoying for some users.
  • It does not have any protection features, such as over-current, over-voltage, short-circuit, or reverse polarity protection. Therefore, you need to be careful when using it and avoid any mistakes that may damage it or your load.

In conclusion, the xl4016e1 module is a powerful and efficient DC-DC converter that can handle up to 8A of current and 36V of input voltage. It is easy to use and has a wide voltage range, but it also has some drawbacks such as size, weight, noise, and lack of protection. If you are looking for a high-performance DC-DC converter for your projects, you may want to give it a try.

BOM to build a power supply with xl4016 IC

Last update: 02/15/2023 00:03

C1, C2, C51uFCeramic Capacitor3
C3470uF/50VElectrolytic Capacitor1
C41000uF/50VElectrolytic Capacitor1
C633nFCeramic Capacitor1
D1MBR1545CT or equivalentSCHOTTKY 45V/15A diode1
D31N4148Fast Diode1
IC2XL4016E18A DC-DC Converter1
LEDLed 3 mmRed LED1
1/4W resistors
P150kSingle potentiometer1
P1 (optional)50kMulti-turn Trimpot 32961
R1, R2, R622KRed, red, orange, gold3
R3, R710KBrown, black, orange, gold2
R51.8KBrown, gray, red, gold1
L147uH /10AToroidal Inductor1
INConnector 2 way 5.0 mmDC Input1
OUTConnector 2 way 5.0 mmRegulated DC output1
JP1Jumper pin headerConnect Switch1
Solder, Wires, PCB, Case, power supply.


Download the files used in this assembly, printed circuit board, PCB

Datasheet in PDF format of the components used in this assembly.

How useful was this post?

Click on a star to rate it!

Average rating / 5. Vote count:

No votes so far! Be the first to rate this post.

As you found this post useful...

Share on the social networks!

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?

Photo of author
About the author
Xtronic.org blog author. Electronics technician for the technical school of Brasilia - Brazil. Interested in electronics, circuits and technology in general.

Leave a Comment