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TPS62420: TPS62420DRC - PCB Footprint Changes

Liet Ly1
Prodigy 20 points
Part Number: TPS62420

Hi all,

I am currently using TPS62420DRC in my board.  This component footprint was created about five years ago based on datasheet dated June 2010.

This week, I need to check some parameters on the footprint because our production department experiencing finished boards with inadequate solder on peripheral pins.

When I looked the datasheet (dated July 2015), I noticed that the component footprint/land pattern is completely different in dimensions from the datasheet dated June 2010.

1.  Can you please elaborate on what is the reason for the change in dimensions and stencil design, etc.?

2.  What is the recommendation for going forward in properly design in the PCB footprint?  Should I follow the datasheet dated July 2015?

3.  Do you have any recommendation in increasing the solder paste (stencil) for peripheral pins since our production experiencing inadequate solder on solder joints?

Sincerely,

LIet Ly

  • 0
    TI__Mastermind 21810 points

    Hi LIet Ly,

    The datasheet has been revised in 2015 (including mechanical & Packaging information). 

    The revisions are usually aimed at enhancing performance with our devices and I strongly recommend to follow the latest datasheet (2015).

    Regards,

    Febin