Study of the ground bounce caused by power plane resonances

Author

Van Den Berghe, S. ; Olyslager, F. ; De Zutter, D. ; De Moerloose, J. ; Temmerman, W.

Author_Institution

Dept. of Inf. Technol., Ghent Univ., Belgium

Volume

40

Issue

2

fYear

1998

fDate

5/1/1998 12:00:00 AM

Firstpage

111

Lastpage

119

Abstract

We describe Delta-I noise caused by power plane resonances in multilayer boards. First, we study the effect of power plane resonances on the ground bounce of the system by performing finite-difference time-domain (FDTD) simulations. We simulate the voltage fluctuations at one point of the printed circuit board (PCB) due to a current surge between the power planes in a different point. Next, two methods to prevent this ground bounce effect are investigated. The first method consists of adding lumped capacitances to the design. The effect of one large capacitor is compared to the effect of adding a “wall” of smaller capacitors. A second approach is to isolate the chips by etching a slot around the sensitive integrated circuits (ICs) and connecting both sides by a small inductor. Both methods provide excellent protection against power plane resonances

Keywords

capacitors; circuit noise; finite difference time-domain analysis; inductors; printed circuits; resonance; surge protection; switching; transients; Delta-I noise; FDTD simulations; IC switching; PCB; capacitor; current surge; finite-difference time-domain; ground bounce; inductor; integrated circuits; lumped capacitances; multilayer boards; power plane resonance protection; printed circuit board; slot; transient currents; voltage fluctuations; Capacitors; Circuit noise; Circuit simulation; Finite difference methods; Nonhomogeneous media; Printed circuits; Resonance; Surges; Time domain analysis; Voltage fluctuations;

fLanguage

English

Journal_Title

Electromagnetic Compatibility, IEEE Transactions on

Publisher

ieee

ISSN

0018-9375

Type

jour

DOI

10.1109/15.673616

Filename

673616