Three tips to reduce PCB design risks
Summary of content: In the PCB design process, if you can predict the possible risks in advance and avoid them in advance, the PCB design success rate will be greatly improved. Many companies have a PCB design and board success rate indicator when evaluating projects.
The key to improving the success rate of a board is the signal integrity design. At present, there are many product solutions for the design of electronic systems. Chip manufacturers have already done a good job, including what chips to use and how to build peripheral circuits. In many cases, hardware engineers rarely need to consider the circuit principle, and only need to make the PCB by themselves.
However, it is during the PCB design process that many companies have encountered difficulties. Either the PCB design is unstable or it does not work. For large enterprises, many chip manufacturers will provide technical support to guide PCB design. However, some SMEs have difficulty getting support in this regard. Therefore, we must find a way to complete it by ourselves, so a lot of problems have occurred, and it may take several versions to debug for a long time. In fact, if you understand the design method of the system, these can be completely avoided. Next, let's talk about three techniques for reducing the risk of PCB design.
In the first stage of the system planning, it is best to consider the signal integrity. If the entire system is set up like this, can the signal be correctly received from one PCB to another? This needs to be evaluated in the early stages, and it is not difficult to evaluate this problem. A little knowledge of signal integrity can be achieved with a simple software operation.
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, we must carry out risk control. There are many problems. At present, there is no way to solve the simulation software, and the designer must control it manually. The key to this step is to understand where the risks are and how to avoid them. What is needed is signal integrity knowledge.
If you can grasp these 3 points in the PCB design process, the risk of PCB design will be greatly reduced, the probability of errors after boarding will be much smaller, and debugging will be relatively easy.