Printed circuit board able to suppress simultaneous switching noise

摘要

A printed circuit board includes a first layer including a first power portion and a first ground portion isolated from each other, and a second layer including a second power portion and a second ground portion isolated from each other. The second layer is spaced from the first layer. The second ground portion is arranged below the first power portion. The second power portion is arranged below the first ground portion. One portion of the first power portion overlaps one portion of the second power portion, and one portion of the first ground portion overlaps one portion of the second ground portion to provide a zero-intensity electric field between the first layer and the second layer. The first power portion is coupled to the second power portion via a first via. The first ground portion is coupled to the second ground portion via a second via.