Challenges in PCB Design and Solutions

1. As PCB size requirements shrink and device density increases, achieving a high PCB distribution rate and shortening design time pose challenges for designers.

2. With PCB design time decreasing, board space shrinking, and device density rising, designers face difficulties due to strict layout rules and large components. To overcome these challenges and expedite product launches, many manufacturers opt for specialized EDA tools. However, these tools may not always deliver the desired outcomes, leading to time-consuming tasks.

3. While there are numerous EDA tools available, maximizing their utility for PCB design remains a common concern. How can designers effectively leverage these tools for optimal results?

4. When wiring key signals, it is crucial to consider controlling electrical parameters like distributed inductance and electromagnetic compatibility. EDA suppliers offer methods to manage these parameters, ensuring quality automatic routing by understanding the tool’s input parameters and their routing impact.

5. Adopting general rules for automatic signal wiring is essential. By setting restrictions on wiring areas, layer and hole usage limits, wiring tools can automatically route wires based on design specifications. Failure to set these restrictions may lead to excessive holes and layers.

6. After applying constraints and rules, automatic routing results align closely with expectations, albeit requiring some organization work. It is vital to secure space for other signals and network wiring and fix completed designs to prevent disruption during subsequent wiring processes.

7. Consistently apply the same wiring process for remaining signals, adjusting constraints based on circuit complexity and general rules. While reducing constraints may increase manual intervention for signal wiring, it ensures efficient completion.

8. Modern automated routing tools are highly capable, typically achieving 100% routing success. However, in cases of signal routing failures, manual intervention becomes necessary to complete the process.

Key considerations for automatic routing design: