[SI-LIST] Re: Improve the heat on a PCB
- From: "BIBICHA" <f_bouchra@xxxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Tue, 19 Jun 2001 18:02:01 -0400
Thanks Patrick and RCSXC for your help.
I really appreciate it.
My application is in Memory models using PLL, registers and ICs.
Actually increasing the copper size would help and that is what we are
looking right now.
Thanks again for your ideas and help
Bouchra
----- Original Message -----
From: <RCSXC@xxxxxxx>
To: <si-list@xxxxxxxxxxxxx>
Sent: Monday, June 18, 2001 9:24 PM
Subject: [SI-LIST] Re: Improve the heat on a PCB
> What exactly is your application? If you have transistor drivers on the
board
> then you must try to heat sink them properly. The technique depends upon
the
> driver. Don't attempt to bring the heat into the interior layers unless it
> goes onto a large plane like ground, that can be exposed on the outer
layers
> to air. You can also use heavier copper on the PCB. An application for a
> board that I'm working on must be able to handle 150 amps of current
through
> it, for safety the copper is 6 oz. Best idea is to get the heat out
quickly
> if possible. Also make sure that you are not stressing components that
> generate the heat by running them too close to their maximum power limits.
> Many ICs (including regulators) will thermally turn off if their junction
> temps exceed about 150 C.
>
>
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