Three tips to reduce the risk of PCB design

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During the PCB design process, if possible risks can be predicted in advance and avoided in advance, the success rate of PCB design will be greatly improved. When evaluating projects, many companies will have an indicator of the success rate of PCB design per board.


    The key to improving the success rate of a board lies in the signal integrity design. There are many product solutions for current electronic system design, and chip manufacturers have already completed them, including what chips to use, how to build peripheral circuits, and so on. In many cases, hardware engineers hardly need to consider the circuit principle, but only need to make the PCB by themselves.


    But it is in the PCB design process that many companies have encountered problems, either the PCB design is unstable or it does not work. For large enterprises, many chip manufacturers will provide technical support and guide PCB design. However, it is difficult for some SMEs to get support in this regard. Therefore, you must find a way to complete it yourself, so many problems arise, which may require several versions and a long time to debug. In fact, if you understand the design method of the system, these can be avoided completely. Next, we will talk about three tips to reduce the risk of PCB design.


    1. It is best to consider signal integrity in the system planning stage. The entire system is built like this. Can the signal be received correctly from one PCB to another? This must be evaluated in the early stage, and it is not difficult to evaluate this problem. A little knowledge of signal integrity can be done with a little simple software operation.


    Second, in the PCB design process, use simulation software to evaluate specific traces and observe whether the signal quality can meet the requirements. The simulation process itself is very simple. The key is to understand the principle of signal integrity and use it for guidance.


    Third, in the process of making PCB, risk control must be carried out. There are many problems that the simulation software has not yet solved, it must be controlled by the designer. The key to this step is to understand where there are risks and how to avoid them. What is needed is signal integrity knowledge.


    If you can grasp these three points in the PCB design process, then the PCB design risk will be greatly reduced, the probability of error will be much smaller after the board is back, and the debugging will be relatively easy.