[SI-LIST] Re: question about using headers in power distribution ?
- From: "Ruturaj Pathak" <Ruturaj.Pathak@xxxxxxx>
- To: <anand287@xxxxxxxxx>,"signal integrity free list" <si-list@xxxxxxxxxxxxx>
- Date: Wed, 20 Nov 2002 17:51:26 -0800
Hello Anand,
Well, you can use any method that you like provided you use thick traces =
and
use multiple vias. You should preferably use a localized plane around =
the
connector pin and the regulator pad.
Regards,
Ruturaj
-----Original Message-----
From: Anand Kulkarni [mailto:anand287@xxxxxxxxx]
Sent: Wednesday, November 20, 2002 11:46 AM
To: signal integrity free list
Subject: [SI-LIST] question about using headers in power distribution ?
Hi all,
I am building a PCB that mainly has a xilinx virtex 2000 {XCV2000E}
Now this is a dual voltage chip, i.e :
it requires:
1) 1.8 volts for core voltage=20
2) 3.3 volts for I/O's
I guess I will need "two" power planes for the "two" voltages =
respectively ?=20
I am using a PC ATX power supply for this purpose . This supply=20
will connect to a PC ATX connector on my board.
On the board I am generating the 1.8 volt using a voltage regulator.
Now my question is:
Should the power pin of the PC ATX connector connect directly to=20
the respective power plane by using a VIA ?=20
--------OR-----------
Is it alright if the trace from this power pin first passes through=20
a header part before going to the power plane ( again using a VIA) ?
please do reply with your comments/suggestions ;I'd really appreciate =
any feedback.
thanks a lot
Anand Kulkarni
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