What are the key points of PCB compatibility design?

- Apr 24, 2020-

What are the key points of PCB compatibility design?

 Most electronic products are inseparable from the components of the circuit board, and the quality of the Circuit Board directly determines the use effect and use quality of electronic equipment, in the circuit board processing there are many important points related to the compatibility of the circuit board, then affect the quality of the Circuit Board, and today Shenzhen Circuit Board manufacturers-chenyu Circuit to Popular Science Next Circuit Board compatibility design points? First, board compatibility is primarily a function of the Electromagnetic compatibility, while Electromagnetic compatibility is understood to be the ability of the board to work harmoniously and efficiently in a variety of electromagnetic environments, the first thing that affects the Electromagnetic compatibility is the width of the wire, which determines the inductance component of the printed wire, and the inductance component determines the surge interference capability of the transient current on the board, therefore, reasonable selection of conductor width can reduce the electromagnetic interference to a minimum. Second, in addition to the printed wire can affect the inductance, the wiring on the circuit board can also affect the inductance, for example, the more common is equal wiring, this can play a role in reducing the inductance, but the disadvantage is that the conductor mutual inductance increases, but also to increase the number of capacitors, so in the design of the circuit board, should be based on specific circumstances to choose the most reasonable wiring. Third, in addition to the inductance mentioned earlier, the crosstalk between conductors also affects the compatibility of the circuit board. In this regard, it is still the wiring that needs attention. For example, the equal wiring mentioned earlier should avoid long-distance equal wiring as far as possible, then as far as possible between the line and the line to increase the distance, there is a signal line and the ground line and power line do not cross, if there is a very sensitive signal line, in order to avoid crosstalk can add a suppression line, this can also be effective crosstalk suppression. All the design techniques mentioned just now are effective in increasing the compatibility of circuit boards, while the senior Shenzhen Circuit Board manufacturer-chenyu circuit also reminds us that the design of circuit boards must be combined with specific electronic products, only according to the actual situation to design in order to achieve better board compatibility.


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