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TPS717 / Reduce inrush current

S.Satoshi
Guru 21685 points
Other Parts Discussed in Thread: TPS717

Hi,

I found that there is step-like power up of Vout as attached and then it induced inruch current. I'd like to slow this to reduce inrush current. Do you have solution to achieve it?

Best Regards,

Sonoki

  • 0
    TI__Guru 55940 points

    Hi Sonoki-san,

    The fixed voltages of TPS717 have a quick-start circuit in order to quickly charge the NR capacitor.  The adjustable version of TPS717 does not have an NR capacitor.  As such inrush current can be reduced by using a smaller output capacitor.

    Very Respectfully,

    Ryan