Regarding PCB, high current

[Rathish322]

Hi,

We are working on a project in which the current is upto 50A at 28V . PCB is a four layer board. Layer1: top ; Layer2: plane (Ground) ; Layer3: Plane (Power) and Layer4: Bottom.

We are using 2ounce copper in PCB planes and 1ounce copper in top and bottom.

Please let me know whether this is ok and any other design considerations need to be taken.

Please help. Any application notes will be very much helpful.

Thanks in Advance.

Regards,
Rathish

 

[FvM]

You can sketch a rough topology of the high current nets, assign traces respectively areas to it and calculate the resistances and current losses. Then you'll see, if its feasible. I fear, 2 ounces may be too poor.

 

[tanuki]

Here is a free tool for trace currents: TrAMP V1.1

You will need to use multiple via where large currents change layers: https://www.ultracad.com/articles/viacurrents.pdf

Other free tools:
**broken link removed**
https://www.ultracad.com/calc.htm

 

[Samina Lee]

Dear Rathish,

I'm glad that our company could produce this kind of PCB smoothly. Should you have demand, pls contact me as below,

Skype: Chintech_Samina
MSN: amylee0756@hotmail.com
E-mail: samina@samway.net.cn

Sincerely,
Samina

 

[som_raparty]

hi
i doubt that the 2ounce and 1ounce could support you,
i would better suggest calculate the copper using thetool and one more suggestion is identif the high current paths and better pour the copper instead of routing the traces, it helps better

thanks
som