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TPS7A84: parallel to achieve 5A

Chris Peng
Prodigy 560 points
Part Number: TPS7A84
Other Parts Discussed in Thread: TPS7A57, , TPS7A85A

Dear BU friends,

Could we support TPS7A84 parallel to achieve 5A application. Customer prefer TPS7A84 due to the setting voltage is convenient for customer.

 

  • 0
    TI__Mastermind 34055 points

    Hi Chris,

    Keep in mind that our newest high performance LDO, the TPS7A57, is rated for 5A without any paralleling.

    Yes you can parallel the TPS7A84 and we have customers who are currently paralleling this device already.  I would recommend using the updated TPS7A84A if possible.  You should use the parallel LDO calculator and enter your system requirements to determine how many LDO's you will need to place in parallel.There are two additional white papers you can review to understand the underlying theory within the calculator, but this is optional.  When you use the calculator, take a look at the TPS7A85A as well - you may be able to use less LDO's in parallel since the TPS7A85A is just a higher current version of the TPS7A84.

    https://www.ti.com/tool/PARALLEL-LDO-CALC

    https://www.ti.com/lit/wp/sbva100/sbva100.pdf

    https://www.ti.com/lit/wp/sbva093/sbva093.pdf

    Thanks,

    Stephen