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Original question:

PMP9780: How to change the output current of the charge pump?

PMP9780: Inrush Current

Dylan Zheng
Intellectual 1425 points
Part Number: PMP9780
Other Parts Discussed in Thread: TPS65131-Q1

Dear expert,

Our customers plan to develop design using PMP9780. But their 3.3V input power supply is limited 1A.

How to improve further PMP9780 inrush current?

Best regards,

Dylan

  • 0
    TI__Intellectual 780 points

    Hi Dylan,

    The part used in that reference design is TPS65131-Q1. Usually I would recommend to increase the soft start time but it appears that the device has a fixed soft start time. Instead you might try to sequence the enables for the output rails to stagger/delay the turn on. If you have further questions, I suggest you contact the product line for further support. 

    Pradeep