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PMP21278: About max output current and measures

Ryotaro Fukui
Intellectual 2345 points
Part Number: PMP21278

Hello team,

I received a question from my customer about Buck/boost controller. I would appreciate if you could give us some advice about it.

The customer is willing to use a buck/boost controller for their system and thought that PMP21278 would have the closest specification for their system. But the max output current is 25A and their requirement is 30A.

I believe that this 25A is related to heat, but can they operate it up to 30A if they take any measures? If yes, what should they change? And if that is not possible, I would appreciate if you could tell me a recommended circuit that could be used instead.

Best Regards,

Ryotaro Fukui

  • +1
    TI__Intellectual 1235 points

    Hello,

    Thank you for your inquiry. The main limit for this design is thermal. If you decide to use the design at higher power, you will also need to review for electrical stress of the power stage components, and adjust the values accordingly. This is a design process, which is beyond the scope of the forum to make that level of design recommendations.

    Best Regards,

    Bob Sheehan

    Power Design Services

  • 0 in reply to Bob Sheehan
    TI__Intellectual 2345 points

    Hello,

    Thank you for your reply.

    So if the customer adjust the values and take thermal measures at the actual design process, they can operate it at 25A or more current.

    I have introduced PMP21278 to the customer with your feedback and they seem to be willing to consider it as a candidate . Thank you for your help.

    Best Regards,

    Ryotaro Fukui