[SI-LIST] : How to decouple POWER/GND , heavy current backplane

liusl ([email protected])
Fri, 24 Sep 1999 10:58:26 -0700

Dear friends,

My backplane will run signals whose frequency ranges from
62.5MHz to 625MHz, and 4 daughter cards inserted each will
consumes 8A current of 3.3V. A whole PCB plane layer with 2oz Cu
will be used to provide this large current to each daughter
cards, that is the total current on backplane will be 4*8A
=32A, which is so large, I don't know how large and how many
Capacitances should be used on backplane to do decoupling.
Anyone can explain that to me?
thanks a lot.
----------------------------- Shengli Liu, Postdoc
_/_/_/_/ _/_/_/_/ _/ Fast Electronics Laboratory
_/ _/ _/ Department of Modern Physics
_/_/_/ _/_/_/ _/ University of Science & Technology
_/ _/ _/ of China,
_/ _/_/_/_/ _/_/_/_/ Heifei, Anhui, P.R.China, 230027
Phone: 0551-3603154 (o)
Fast Electronics Laboratory http://www.felab.ustc.edu.cn

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