公开(公告)号：US5068631A

公开(公告)日：1991-11-26

申请号：US564998

申请日：1990-08-09

Applicant: Richard A. Vince

Inventor： Richard A. Vince

IPC: H05K1/14 ,  H03H1/00 ,  H05K1/02

CPC classification number: H05K1/0233 ,  H05K1/0225 ,  H05K1/0224 ,  H05K1/0231 ,  H05K2201/086 ,  H05K2201/093 ,  H05K2201/09663 ,  H05K2201/09681 ,  H05K2201/09772 ,  H05K2201/1006 ,  H05K2201/10689

Abstract: Electromagnetic filtering for a VLSI device having multiple power input leads is realized by employing a sub-power plane which is physically separate from a main power distribution system on a circuit board. The sub-power plane is placed directly under a corresponding VLSI device. Decoupling capacitors are connected to the sub-power plane and, in turn, to each of the power input leads on the VLSI device. Power is supplied from the main power distribution system to the sub-power plane via a ferrite bead type filter.