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LMR33630-Q1: PCB Layout

Amelie Zheng
Genius 10865 points
Part Number: LMR33630-Q1

Hi Team,

My customer now uses our LMR33630-Q1. 

Actually I have helped them to review twice about the LMR33630-Q1...

Based on my advice, they have changed  a lot. You can't image how xx the first version is...

However, because they used the competitor before and now change  this part to TI solution. So the space is very limited.

I will ask them to add the standard 8 Cin+Cout as datasheet suggested.

Any other advice or comment about the layout?

Here are the third version:

  • 0
    TI__Expert 8245 points

    Hi,

    The small input capacitors, boot capacitor and FB resistors look good if the Vout-FB return path is away from SW node. If they have a very limited space, it's OK to put bulk capacitors a little far away from Vin-GND pin but still needs the path as wide and short as they can. On output, they also need to have enough capacitors for a certain load. Thanks.