Multi layer traces

Discussion in 'The Projects Forum' started by vivek20055, Jan 20, 2013.

  1. vivek20055

    Thread Starter Member

    Nov 4, 2012
    88
    0
    Hi,


    I have to modify a 4 layer pcb in PADS software.

    The problem with the previous design is the trace used for high current path is fused away.

    Can I use multi layer traces(for all 4 layers) for the same connection with wide traces(including ground layer)???

    Can anyone suggest me something about this???

    Thanks regards,
    Vivek Alaparthi
     
  2. kubeek

    AAC Fanatic!

    Sep 20, 2005
    4,670
    804
    I don´t see a problem with using all 4 layers to do the connection. What is the current through that part? Are you sure it´s the trace and not the vias that fuse?
    Can you post a schematic for the board? And maybe keep one design in one thread?
     
  3. takao21203

    Distinguished Member

    Apr 28, 2012
    3,577
    463
    Use airwires soldered to PCB pads for anything >5 Amps.
     
  4. vivek20055

    Thread Starter Member

    Nov 4, 2012
    88
    0
    Hi kubbek,

    Thanks for your reply


    The design given above is mine not the previous one

    There is no problem with connection.

    My doubt is that, i have given traces in all 4 layer for same connection including ground.

    Does that mean these components are grounded or not.

    Can I use ground layer also for connecting traces to components(data lines and power), if no net is assigned in that plane area???

    I am attaching schematic with this post


    Thanks & regards
    Vivek Alaparthi
     
    Last edited: Jan 20, 2013
  5. t06afre

    AAC Fanatic!

    May 11, 2009
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    1,222
    Without having a schematic it is hard to tell. Maybe you do not need four layers at all.
     
  6. vivek20055

    Thread Starter Member

    Nov 4, 2012
    88
    0
    Hi to6afre,


    Thank you for your reply

    I am attaching schematic with this post
     
  7. kubeek

    AAC Fanatic!

    Sep 20, 2005
    4,670
    804
    Have you checked the switching times on those transistors? At what frequency are they switching? What is the peak current?

    As for the board connections, you can look at the output gerber files and see what is connected to what. I use gerberlogix for this, one of those grber viewers that actually work.
     
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