[SI-LIST] Re: DC power Analysis/Current Density
- From: "Carrier, Patrick" <Patrick_Carrier@xxxxxxxxxx>
- To: "balaseven@xxxxxxxxx" <balaseven@xxxxxxxxx>, "si-list@xxxxxxxxxxxxx" <si-list@xxxxxxxxxxxxx>
- Date: Thu, 12 Apr 2012 13:58:51 +0000
Hi Bala--
The relationship between current density and temperature rise is a complicated
one that has a number of "it depends" types of factors, most notably how an
area of high current density is connected to the rest of the plane. That will
be one of the determining factors in how the heat will dissipate from that
area. It is best to do a PI/Thermal co-simulation simulation to assess this
accurately. Even IPC-2152, the new current/thermal specification, advocates
simulation as a means to solving this problem.
The following webinar will probably be of interest to you:
http://www.mentor.com/products/pcb-system-design/multimedia/don-t-let-integrated-circuit-power-demands-heat-up-your-board
--Pat
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of bala
Sent: Thursday, April 12, 2012 7:29 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] DC power Analysis/Current Density
Hi Experts,
I have a question on 'DC power analysis'. Hope the maximum allowed IR
drop/V-drop value can be concluded from the line/load regulation. Is there any
general formula to find out a maximum allowed 'current density' for a
particular power plane? For example, if I want to simulate 3.3V, 0.8A
plane@maximum of 70 degree Celsius, how shall we find out the maximum allowed
current density for this case?
Regards
bala
------------------------------------------------------------------
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:
