Sub power plane to provide EMC filtering for VLSI devices

Details Sub power plane to provide EMC filtering for VLSI devices Sub power plane to provide EMC filtering for VLSI devices

1990-08-09

1991-11-26

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Frequency domain filters utilizing only lumped parameters

333 12, 361401, 174250, H03H 700, H05K 118

Patent

active

050686313

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.

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EMI Control in the Design of PRINTED CIRCUIT BOARDS AND BACKPLANES, Donald R. J. White, MSEE/PE, 3rd Edition, copyright 1982, Don White Consultants, Inc., pp. 2.11-2.17, 1982.

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