[SI-LIST] Re: would vsense pin make us not worry about DC IR Drop for PI
- From: "Orin Laney" <olaney@xxxxxxxxx>
- To: <balajy.kumar@xxxxxxx>, <si-list@xxxxxxxxxxxxx>
- Date: Fri, 21 Dec 2012 07:53:01 -0800
Which SI books have you read so far? Check the list archive for
recommendations if you need some.
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of Balajy Kumar -ERS, HCL Tech
Sent: Friday, December 21, 2012 3:50 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: would vsense pin make us not worry about DC IR Drop
for PI
Hi
I am new to SI field. Could you please explain with details how the DC
threshold multicross, Undershoot and overshoot parameters will impact the
system?
Thanks
Balajy
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of Tesla
Sent: Friday, December 21, 2012 6:35 AM
To: weirsi@xxxxxxxxxx; Istvan Novak
Cc: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: would vsense pin make us not worry about DC IR Drop
for PI
Hi,
Thank you very much.
Happy holiday.
Tesla.
At 2012-12-20 22:11:54,"steve weir" <weirsi@xxxxxxxxxx> wrote:
>Istvan covered most of the high points. Orocessors can draw up to 130A
>and these requirements are managed by careful design. Your first tool
>is the copper weight in your planes. Your second tool is the location
>of the planes in the stack-up. Remote sense or other feedback
>techniques such as balanced bridge can also be used. The feedback
>method will of course affect the choice of VRM.
>
>Steve
>On 12/20/2012 12:54 AM, Tesla wrote:
>> Hi, Expert
>>
>> I found it difficult to maintain 5 percent DC voltage drop for the modern
FPGA, eg, Virtex6 demand 20A for the core, even if a use a complete power
plane.
>> The lucky thing is modern power supply chip has vsense pin to output a
higher voltage for compensating the DC IR drop.
>> Does that mean we need not worry DC IR drop if our power chip has the
vsense pin to modify the voltage?
>>
>> Thanks and happy holidays
>>
>> Tesla
>>
>>
>> ------------------------------------------------------------------
>> To unsubscribe from si-list:
>> si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
>>
>> or to administer your membership from a web page, go to:
>> //www.freelists.org/webpage/si-list
>>
>> For help:
>> si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
>>
>>
>> List forum is accessible at:
>> http://tech.groups.yahoo.com/group/si-list
>>
>> List archives are viewable at:
>> //www.freelists.org/archives/si-list
>>
>> Old (prior to June 6, 2001) list archives are viewable at:
>> http://www.qsl.net/wb6tpu
>>
>>
>>
>
>
>--
>Steve Weir
>IPBLOX, LLC
>150 N. Center St. #211
>Reno, NV 89501
>www.ipblox.com
>
>(775) 299-4236 Business
>(866) 675-4630 Toll-free
>(707) 780-1951 Fax
>
>All contents Copyright (c)2012 IPBLOX, LLC. All Rights Reserved.
>This e-mail may contain confidential material.
>If you are not the intended recipient, please destroy all records and
>notify the sender.
>
>------------------------------------------------------------------
>To unsubscribe from si-list:
>si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
>
>or to administer your membership from a web page, go to:
>//www.freelists.org/webpage/si-list
>
>For help:
>si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
>
>
>List forum is accessible at:
> http://tech.groups.yahoo.com/group/si-list
>
>List archives are viewable at:
> //www.freelists.org/archives/si-list
>
>Old (prior to June 6, 2001) list archives are viewable at:
> http://www.qsl.net/wb6tpu
>
>
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List forum is accessible at:
http://tech.groups.yahoo.com/group/si-list
List archives are viewable at:
//www.freelists.org/archives/si-list
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
::DISCLAIMER::
----------------------------------------------------------------------------
------------------------------------------------------------------------
The contents of this e-mail and any attachment(s) are confidential and
intended for the named recipient(s) only.
E-mail transmission is not guaranteed to be secure or error-free as
information could be intercepted, corrupted, lost, destroyed, arrive late or
incomplete, or may contain viruses in transmission. The e mail and its
contents (with or without referred errors) shall therefore not attach any
liability on the originator or HCL or its affiliates.
Views or opinions, if any, presented in this email are solely those of the
author and may not necessarily reflect the views or opinions of HCL or its
affiliates. Any form of reproduction, dissemination, copying, disclosure,
modification, distribution and / or publication of this message without the
prior written consent of authorized representative of HCL is strictly
prohibited. If you have received this email in error please delete it and
notify the sender immediately.
Before opening any email and/or attachments, please check them for viruses
and other defects.
----------------------------------------------------------------------------
------------------------------------------------------------------------
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List forum is accessible at:
http://tech.groups.yahoo.com/group/si-list
List archives are viewable at:
//www.freelists.org/archives/si-list
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List forum is accessible at:
http://tech.groups.yahoo.com/group/si-list
List archives are viewable at:
//www.freelists.org/archives/si-list
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
Other related posts:
