label: pcb board,pcb board layer,PCB
pcb board layer settings and power split principle.
1, vertical wiring rules must be defined directly adjacent two signal layers.
2, as the main power supply layer corresponding to the adjacent formations, 20H power layer satisfies the rule.
3, each wiring layer has a complete reference plane.
4, multilayer laminated core (CORE) symmetry, to prevent uneven distribution of copper density, dielectric thickness asymmetric warp.
5, the thickness of no more than 4.5mm, the thickness greater than 2.5mm (backplane greater than 3mm) should have craft personnel to confirm PCB fabrication, assembly, equipment, no problem, PC Card thickness is 1.6mm.
6, the diameter of the through-hole to give a thickness of PCB manufacturers Claim ratio greater than 10:1.
7, the power light module with other power, to separate, to reduce interference.
8, power supply key components, handle meet the requirements.
9, when the impedance control requirements, the layers meet the requirements set parameters.
I hope useful to readers, there are problems Comments welcome to explore.
Source://www.seekic.com
