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A project log for TPS6104x breakout board

1.8...6V to 15V (up to 28) step-up converter board

christophChristoph 12/14/2015 at 10:035 Comments

I picked the feedback resistors for 15 V output, and that's what's actually coming out when supplied with 3.3 V:

The layout needs a revision, though:

The bottom left 0402 cap is too small for the 0603 pads (I thought I had ordered the correct part...) but I was lucky and it didn't tombstone. All 0402 pads are too large. The rest seems to be fine.

Discussions

K.C. Lee wrote 12/14/2015 at 12:58 point

if you are using Eagle, the ipc-7351 library has the right sizes.  That's what I use on my projects.
Those 0402 resistor pads seems a bit long.

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Christoph wrote 12/14/2015 at 13:01 point

Thank you, I do use eagle. Do you have a link to that library?

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K.C. Lee wrote 12/14/2015 at 13:31 point

Ones I have used are: ipc-7351-capacitor.lbr, ipc-7351-diode.lbr, ipc-7351-resistor.lbr, ipc-7351-transistor.lbr and ipc-7351-inductor.lbr

http://www.cadsoftusa.com/downloads/libraries

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Christoph wrote 12/14/2015 at 13:44 point

the ipc capacitor and resistor libraries both don't have a 0402 footprint, or am I missing something?

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Christoph wrote 12/14/2015 at 13:48 point

oops...metric size codes, sorry. Well then the libraries footprints are very close to my new revised footprints for both 0402 and 0603 (imperial), so that was helpful! Thanks again.

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