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LMR38020-Q1: Layout review

Simon Fleischer
Prodigy 40 points
Part Number: LMR38020-Q1

Tool/software:

Hi,

we are layouting LMR38020-Q1 and need your feedback for the Layout.

Thanks & Best regards

Simon

  • 0
    TI__Mastermind 31315 points

    Hi Simon,

    If possible, can you provide your schematic and layout files? You may send me a PM if you would like. 

    Thanks,

    Richard

  • 0
    TI__Mastermind 31315 points

    Hi Simon,

    Just a few comments on my side.

    I would shift bootcap Cout11 closer to the switch node by lessening the trace length and making the boot trace should be as wide as possible connecting the BOOT and SW pin.

    By doing so, you can shift the inductor L1 closer to make the SW node smaller. This will also bring in the output capacitors closer. 

    I recommend also connecting the 5V output node using big traces to minimize adding extra inductance to the circuits downstream. 

    It looks like you have added a solid ground layer underneath top and bottom layers, so I think it should be ok.

    Thanks,

    Richard