What are the basic principles of PCB board design? Let's find out together:
1. Choose the correct grid set and always use a grid spacing that matches most components. While multigrid appears to be effective, if engineers had given more thought in the early stages of PCB layout design, they could have avoided spacing difficulties and maximized board utilization.
2. Keep paths short and direct. This applies especially to analo and high-speed digital circuits, where system performance is always limited in part by impedance and parasitic effects.
3. Use the power layer as much as possible to manage the distribution of power and ground wires. Copper coating on power planes is a faster and easier option for most PCB design software. By connecting a large number of wires together, current flow with the highest efficiency and lowest impedance or voltage drop can be guaranteed, while an adequate ground return can be provided.
4. Group related components with required test points.
5. Repeat the desired board layout on another larger board Selecting the most appropriate size for the device used by the manufacturer helps reduce prototyping and manufacturing costs.
6. Integrate component values. As a designer, selecting discrete components with high or low component values but with the same performance can simplify the bill of materials and reduce costs by consolidating within a smaller range of standard values.
7. Perform as many design rule checks as possible. While it takes only a fraction of the time to run DRM functions on PCB software, in more complex design environments, a lot of time can be saved by simply performing checks throughout the design process.
8. Flexible use of screen printing. Screen printing can be used to mark various useful information for future use by the board manufacturer, service or test engineer, installer or equipment debugger.
9. Decoupling capacitors are required. Instead of trying to optimize the design by avoiding power line decoupling and following the limits in the component data sheet, spend as much time as possible assembling the capacitor.
10. Generate printed circuit board manufacturing parameters and verify them before submitting for production. While most board manufacturers are willing to download it directly and verify it for you, you'd better output the Gerber file first and check it with a free viewer to avoid misunderstandings.
