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How to reduce the risk of PCB design?


In the PCB design process, if the risk can be predicted and circumvented in advance, the success rate of PCB design will be greatly improved. Many companies have indicators of PCB design success rates when evaluating projects.

The key to improving the success rate is signal integrity design. Currently, there are many product solutions for electronic system design, and chip manufacturers have done it, including what chips are used, how to build peripheral circuits, and so on. In many cases, hardware engineers usually do not need to consider the circuit principle, just need to make the PCB itself.

However, in the PCB design process, many companies have encountered difficulties, that is, the PCB design is unstable or not working properly. For large enterprises, many chip manufacturers will provide technical support to guide PCB design. However, some SMEs have difficulty obtaining support in this regard. Therefore, we have to find a way to do it ourselves, so we have a lot of problems, we may need to play multiple versions and debug for a long time. In fact, if you understand how the system is designed, you can avoid these situations. Next, let's talk about three techniques for reducing the risk of PCB design.

First, it is best to consider signal integrity issues during the system planning phase so that the entire system can be built and can signals be properly transferred from one PCB to another. This will be evaluated early and it is not difficult to assess this. Some signal integrity can be understood through simple software operations.

Secondly, in the PCB design process, the simulation software is used to evaluate the specific traces to see if 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 guide.

Third, in the PCB manufacturing process, it is necessary to conduct risk control. There are many problems. At present, there is no way to solve the simulation software, and the designer must control it artificially. The key to this step is to understand where risks exist, how to avoid them, and what is needed for signal integrity.

If you master these three points in the PCB design process, you will greatly reduce the risk of PCB design. The probability of making a mistake after playing back is much smaller, and debugging is relatively easy.
Tags: PCb design
lhdblog 10 october 2019, 2:04
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