TPS40057: PCB layout

Hello,

Some layout guidance for the TPS40057 is provided on page 26,27 and 28 of the datasheet. please let me know if you have any further questions?

Thanks.

David.

If this is a new design, TI recommend using newer released devices such as LM25145 and LM5145, instead of TPS40057.

Thank you,

Yang

I advise tying all Gnds of signal components to a SGnd using a poly pour and then route back to SGnd pin.  Then Connect the SGnd pin to PGnd pin underneath the device.

Hope this helps?

David.

The number of Vias and size of the via will depend on how much current you have flowing through the via and the size of the polygon pour you have available.

Suggest the following recommendations of 2A/via size of 14mils....

Thanks.

please can you forward layout to David.Baba@ti.com.

If you are using Altium, you can send me the altium files directly, other wise it would be helpful if you can pdf each layer and send to me.

Thanks in advance.

David.

I think it depends on your design constraints you have set up or is a default in your PCB layout software?

I sent you an email to send me your layout.

Thanks.

email was received and feedback on layout was provided, in direct communication with person.