08/24/2026
Check out this project by .tr. Great job! π If you would like to share your project with us, contact us on [email protected]. π©
"What started as a 4-layer layout approach was later moved to a 6-layer PCB architecture to achieve cleaner return paths and a more robust power distribution structure.
Some of the key points I focused on during this design:
β’ Referencing signal layers to solid GND planes
β’ Distributing +3.3V and +5V through dedicated power planes
β’ Keeping regulator switch-node areas short and local
β’ Placing decoupling capacitors as close as possible to the related pins
β’ Using short GND via returns to the plane
β’ Applying differential pair routing for the W5500 Ethernet interface
β’ Using an isolated transceiver and isolated DC-DC structure for the CAN-FD interface
β’ Maintaining proper GND / GND2 separation
β’ Creating internal-layer keepout areas around relay contact regions
β’ Keeping EMI input, crystal, and ADC sections away from noisy areas
β’ Using thermal relief where solderability matters, and solid connections where current or thermal performance is more critical
For me, PCB design is not only about completing connections. It is about considering power distribution, return currents, manufacturability, solderability, component sustainability, and how the product will behave under real operating conditions.
After the technical routing stage, the board will also include the company logo, product name, revision number, manufacturing/stock code, test point labels, connector orientation markings, and the required traceability information. These details are just as important as the electrical design for manufacturing, quality control, inventory management, and field service processes."
