Author Topic: Connecting Internal Power plan to Vcc and GND  (Read 6215 times)

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Offline grimmjawTopic starter

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Connecting Internal Power plan to Vcc and GND
« on: January 20, 2014, 09:37:48 am »
Hi,

another AD14 question, I have 4-layer board with Vcc and GND as internal plane.
My question is how do I connect the power netz to the internal plane? With AD13 just put the nezt name in the Layer stack manager.

But I cannot find the netz name in layer stack manager in  AD14 ?Can anyone point me the obvious?
Thanks
 

Offline grimmjawTopic starter

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Re: Connecting Internal Power plan to Vcc and GND
« Reply #1 on: January 20, 2014, 03:06:43 pm »
Nevermind, found it. :clap:

Double click on layer tab on PCB editor if anyone curios.
 

Offline gdmartins

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Re: Connecting Internal Power plan to Vcc and GND
« Reply #2 on: January 22, 2014, 05:17:12 pm »
I think I have a very similar problem. The GND plane connects to all vias connected to ground, but it seems like the VCC plane is Floating (not connected to any via). Have anyone seen this before? I must be missing something very very obvious..

I attached snaps of the stackup, Power and Ground plane

Thanks
« Last Edit: January 22, 2014, 05:25:19 pm by gdmartins »
 

Offline marshallh

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Re: Connecting Internal Power plan to Vcc and GND
« Reply #3 on: January 22, 2014, 10:54:53 pm »
I generally treat the inner layers as signal and just put polygon pours on them... good for split power planes without the hassle.
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Offline VEGETA

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Re: Connecting Internal Power plan to Vcc and GND
« Reply #4 on: January 23, 2014, 03:38:23 am »
Say If I have 3 power sources in the same schematic: Mains AC, 9v DC adapter (and then regulated to 5v), and high voltage DC like 180v (say rectified from the mains by full bridge).

How should I connect ground to each one of them? All I know is that each power source MUST have it's own ground -  so connecting HV DC ground to the 9v one is not correct.

However, if the HV DC is rectified from the mains... should it be connected to the same ground point as the AC mains ground? of course mains AC don't have a "ground", it's Line and Neutral.

I hope someone help me understand this in theory, practical and PCB stuff. In PCB I only want to know if this can be achieved or not... I am not gonna try it soon.

Big THANKS.


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