The design process of multi-layer circuit boards is basically the same as that of conventional PCB boards. The difference lies in the need to segment the intermediate signal layer and the internal electrical layer. On the whole, the design of multilayer circuit boards is divided into the following stages:

1. The planning of multi-layer circuit boards is mainly to plan the physical size of the multi-layer circuit board, the package form of the components, the assembly method of the components, and the layer structure of the circuit board, namely single-layer, double-layer and multi-layer boards.

2. Indicate job parameter setting, job environment parameter setting and job layer parameter setting. The environmental parameters of the multilayer circuit board are set correctly and reasonably, the circuit board design is very convenient, and the work efficiency is improved.

3. Component layout and adjustment. After the current period of work is ready, the netlist can be imported into the PCB. Component layout and adjustment are relatively important tasks in the design of multilayer circuit boards, which directly affect operations such as the subsequent wiring and the division of the internal electrical layer.

4. In the software layer stack manager, focus on defining and setting the middle layer of the multilayer circuit board with a specific layer structure, mainly the number of the middle signal layer and the internal electrical layer, the upper and lower structure, etc.

5. Inner electric layer segmentation, it is usually necessary to divide the inner electric layer into multiple isolated areas, and connect each area to a specific power supply network. This is an important difference between multi-layer boards and ordinary boards, and an important part of the design of multi-layer circuit boards.

6. Wiring rules are set, mainly to set various specifications of circuit wiring, wire width, parallel wire spacing, safety spacing between wires and pads, and the size of vias, etc. Good wiring rules can ensure the safety of the circuit board wiring, and meet the requirements of the production process, saving costs.

7. Wiring and adjustment, pay special attention to the order of layout and wiring, but in the design project, the layout of the circuit board is often adjusted according to the needs of wiring and internal electrical layer division, or the wiring is adjusted according to the layout. They are mutually exclusive. The process of balance and mutual adjustment.

8. Other auxiliary operations, such as copper coating and teardrop filling, and document processing work such as report output and save printing. These files can be used to check and modify multilayer circuit boards, and can also be used as a list of purchased components .