Les catégories: Conception de PCB

Quand dois-je choisir 2 couche PCB ou 4 PCB de couche?

2-PCB de couche is enough to route any circuitry, at least in theory. One layer for vertical tracks, the other for horizontal tracks, connect them with via’s.

If you need route high-speed signals on the PCB, such as RF circuitry, switched-mode power supplies, and long digital buses, 4-couches are required. They are widely applied in modern datasheets, high-performance semiconductors, switched-mode PSU, heat-rejecting devices.

It can ensure the signal integrity, even though the return path for the signal currents is too long and the loop impedance is too high.
The radiated EMI will be steady so as to pass CE/FCC.
ensure that the device won’t emit too much radiation and would be robust against interference.

Price of a 4 layer PCB is roughly 3x-4x higher than that of a 2-layer one. pourtant, most of the time 2 layer is not a viable option.

Lire la suite: Dois-je utiliser un PCB double couche ou un PCB simple couche?

#Conception de PCB

Olivier Smith

Oliver est un ingénieur en électronique expérimenté, spécialisé dans la conception de PCB., circuits analogiques, systèmes embarqués, et prototypage. Ses connaissances approfondies couvrent la capture schématique, codage du micrologiciel, simulation, disposition, essai, et dépannage. Oliver excelle dans l'art de faire passer des projets du concept à la production de masse en utilisant ses talents de concepteur électrique et ses aptitudes en mécanique..