How to reduce PCB design risk

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

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

But it is in the PCB design process that many companies encounter difficulties, 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. But some small and medium-sized enterprises are difficult to get support in this regard. Therefore, we must find a way to complete it by ourselves, so many problems have arisen, and it may take 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, let’s talk about three tips for reducing the risk of PCB design.

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

2. During the PCB design process, use simulation software to evaluate the specific routing 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, and the current simulation software has no way to solve them, and the designer must control them manually. The key to this step is to understand where there are risks and how to avoid risks. What is needed is signal integrity knowledge.

If these three points can be properly grasped during the PCB design process, the risk of PCB design will be greatly reduced, the probability of errors after board printing will be much smaller, and debugging will be relatively easy.

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