FreeLists / si-list / [SI-LIST] Re: help me

[zhangkun 29902 <zhang_kun@xxxxxxxxxx>]

Dear jagaveer

Do not worry about the problem. I have met this kind of problem for several 
times. When the IC is soldered on the PCB, the dc resistance between power and 
ground is very small.

However, I am not sure the reason. The IC vendor did not explain it:(

Best Regards

Zhangkun
2006.2.3


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----- Original Message -----
From: jagaveer25 <jagaveer25@xxxxxxxxxxx>
Date: Friday, February 3, 2006 12:25 pm
Subject: [SI-LIST] help me

> Hi folks,
> 
> 
> I have done in one PCB. It is 12 layer board
> 
> I have used 4 digital signal processor and one field programmable 
> gate array for this pcb .
> 
> Dsp side I have used 3 pwr supplies 
> 
> 1v
> 1.5v
> 2.5v
> before I have populated that dsp I have checked between  the all 
> pwr 
> supply and gnd resistance is very high resistance but
> after I have populated that 3 dsp I have checked  between the 
> 1Vpwr 
> supply and gnd resistance is only 3 ohms
> 
> my 1v pwr section is 20A design 
> 
> I can't understand this type of problem
> Can u give any solution for this problem I have appreciate it
> 
> Thanks
> V.jagaveer
> 
> 
> 
> 
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