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TPS63070: Any design consideration for operating TPS63070 at 2A maximum output?

ftwang
Prodigy 10 points
Part Number: TPS63070

I'm seeking some guidance on selecting the right power converter.  My application requires a buck-boost convert to convert the input voltage (6.4-8.4V) from a 2S Lithium Polymer battery (1500mAH) to power a DC motor running intermittently on at 7.5V @ 2 amps for 1 second, followed by a 1 second rest.  I plan on using the TPS63070, mainly because of the overall solution cost, however am wondering if there is anything I need to watch out for by running the TPS63070 near the maximum output current limit of 2A, in particular stability?  Or is there any other power converter that you would recommend?  I do need an enable pin.

Thank you,

Frank

  • 0
    TI__Mastermind 40080 points

    Hi Frank,

    It should be OK.  Please refer to the TPS63070EVM board for the layout, the input and the output cap should be very close to the IC. With motor load, the output capacitance should be high enough, suggest you place 2pcs 22uF/16V ceramic +100uF EL cap  at the output side.