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TPS65950/30/20: USB charge pump

Gandhar Dighe
Genius 15100 points
Other Parts Discussed in Thread: TPS65950

Q: If TPS65950/30/20 USB CP is not required (no need to provide VBUS), can the external capacitors be avoided ?

A: Yes. Make sure you never turn that ON, It will cause noise problems on other internal resources.

 

  • 0
    TI__Expert 5460 points

    Hi Gandhar,

    would you have a figure of the CP's efficiency vs the output current?

    Thanks!

  • 0 in reply to Leon Sae-Ung
    Prodigy 150 points

    Hi,

    Please find the details below regarding the CP's efficiency

    - VBAT = 3.0V, max load :          Min 65%, Nom 68%       (measured)

    - VBAT = 3.6V, max load :          Min 55%, Nom 58%       (computed)

    - VBAT = 4.4V, max load :          Min 45%, Nom 48%       (measured)

    According to the theory, this efficiency should be pretty stable for a load between 25mA and 100mA.

    Thanks,