PCB design challenges

Release time:

2023-04-25


The ever-shrinking feature size and the influence of Moore's Law make the signal transmission rate higher and higher, and the edge becomes steeper, so that the transmission line effect can no longer be avoided, and the signal on the signal line can no longer be regarded as an ideal number. The signal should be treated as a microwave, so a "black schematic diagram" appears. The correct logic of the simple schematic diagram cannot guarantee the correct realization of the signal;

  What are the PCB design challenges faced by PCB circuit board factories?

  1. The ever-shrinking feature size and the influence of Moore's Law make the signal transmission rate higher and higher, and the edge becomes steeper, so that the transmission line effect can no longer be avoided, and the signal on the signal line can no longer be regarded as an ideal number. The signal should be treated as a microwave, so a "black schematic diagram" appears. The correct logic of the simple schematic diagram cannot guarantee the correct realization of the signal;

  2. More and more powerful circuit functions increase the integration level of the board, but the production process level cannot be improved immediately due to the limitation of production equipment, which leads to greater design challenges in CAD design to meet the existing process level;

  3. To control the cost, the number of layers of the single board cannot be increased infinitely with the increase of the density, and try to use low-priced components, such as using ordinary 2mm connectors instead of special connectors for high-speed differential lines, resulting in greater EMC and system signal integrity. challenge;

  4. The fierce market competition leads to the shortening of the product development cycle. There is no extra time and financial resources for continuous repeated development. The single board must be as successful as possible at the first time. For this reason, the first design must take into account possible Productivity, testability, maintainability, and can basically pass the certification of various professional institutions for market access.