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The Influence of Anti-Pad Array on the Inductance of PCB Power Net Area Fill

Research output: Contribution to journalArticlepeer-review

Abstract

A low impedance power distribution network (PDN) is essential for the functionality of high speed printed circuit boards. A pre-layout impedance calculation can avoid time consuming changes on the design during post-layout stage. Design curves for inductance estimation are convenient to use in pre-layout stage. However, the high density voids on the power plane, which is caused by the anti-pads, are not considered in those design curves. This short paper discussed the extra inductance caused by the anti-pads, in two common situations.

Keywords

  • Design curves
  • Impedance calculations
  • Inductance
  • Inductance estimations
  • Low impedance
  • Plane-pair PEEC
  • Power distribution network
  • Power integrity
  • Power planes
  • Printed circuit boards

Disciplines

  • Electrical and Computer Engineering

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