In this project, am going to design an ESP32/STM32 power supply system. From the research, I have taken note that the ESP32 and the STM32 are powered by a 3V3 output power supply system. For this project, our input will be a 5V input which will be through a USB port.

Components

1.      USB port – 5V

2.      capacitor- 68uF SMD and electrolytic

3.      Capacitor – 120 uF

4.      IC- LM2594M- 3V3------------Voltage regulator which takes an input up to 60 VDC

5.      Diode- Schottky type of diode

6.      Inductor- 100 uH

7.       Connector_01x02; Terminal block

Schematic:

Here, the schematic main part is the LM2594M-3.3 voltage regulator which regulates the input voltage by stepping it down from 5V to 3V3 volts which is necessary for powering our ESP32/STM32.

The voltage regulator will receive the 5V from the USB port then regulate it and pass it to the terminal block which will be an output of 3.3V at 500mA of power.

 PCB Layout:

The PCB layout is carried out and here all the routing process takes place to ensure that all the components and the ground are connected by drawing the copper traces.

3D view

Here we generate the actual view of how the final PCB outlook will appear. This is the point where you even set the colors of your PCB to the required colors.

Generation of the manufacturing files;

1.      Gerber files

2.      Pick and place files

3.      Drill files

4.      BOM files