Experimental evaluation of power bus decoupling on a 4-layer printed circuit board

Author

Chen, Juan ; Xu, Minjia ; Hubing, Todd H. ; Drewniak, James L. ; Van Doren, Thomas P. ; Dubroff, Richard E.

Volume

1

fYear

2000

fDate

2000

Firstpage

335

Abstract

The switching of active devices on printed circuit boards (PCBs) can cause a momentary surge or drop in the power bus voltage. Decoupling capacitors are often utilized to alleviate this problem. They help to stabilize the power bus voltage by supplying transient current to active devices. The decoupling strategy, including where to place the high-frequency decoupling capacitors, is often a topic of debate. This paper examines the effect of decoupling capacitor placement on a 4-layer printed circuit board. Some design guidelines are provided

Keywords

active networks; busbars; capacitors; electromagnetic coupling; printed circuit layout; transient analysis; 4-layer printed circuit board; PCB; active devices; decoupling capacitor placement; decoupling capacitors; design guidelines; high-frequency decoupling capacitors; power bus decoupling; power bus voltage; surge; transient current; Capacitors; Current supplies; Frequency; Impedance; Printed circuits; Region 2; Surges; Switching circuits; Testing; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 2000. IEEE International Symposium on

Conference_Location

Washington, DC

Print_ISBN

0-7803-5677-2

Type

conf

DOI

10.1109/ISEMC.2000.875588

Filename

875588