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LMZ34002: Output capacitor derating

Jason Haedt
Expert 3230 points
Part Number: LMZ34002

Hello,

I am using LMZ34002 to go from 24V to -12V @ 1A.  I see different capacitors in the datasheet but most are rated at 16V and I usually derate higher but I am having a hard time finding cermics above 16V in the large densities recommended in the datasheet.

Is there a derating guideline that should be used for the inverting configuration that is different than a traditional buck configuration?

-Jason 

  • 0
    TI__Mastermind 28020 points

    The voltage rating of the capacitors recommended in the datasheet have been confirmed during validation. The same derating would apply for inverting vs. buck. If you require higher voltage rated caps, there are 25V rated 22uF-47uF caps available.