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TPS56C215: Overvoltage protection

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Replies: 4

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Part Number: TPS56C215

Hello team,

Let me ask about overvoltage protection(OVP) since I can't find the detail on the datasheet.
1) It looks to have two level of the overvoltage detection, out-of-bounds(OOB) at +8% and OVP at +21%, is it correct?
2) The datasheet says that it operates in FPWM mode only by turning on the LS-FET during the OOB. How does it work when the output hit OVP level?
3) If the OVP shuts down the switching, does it have a wait time and hiccup time such as UVP?

Thanks in advance.
S.Sawamoto

  • Could anyone help this?

  • In reply to Shinya Sawamoto:

    Hi, S

    For first question, it is yes.

    For OVP , it will be discharged with a discharge circuit at SW pin, and both HS/LS will turned off at that time, some description in 7.3.12.

    Yuchang

  • In reply to Yuchang Zhang:

    Hi Yuchang,

    Thanks for your answer.
    Now I understood the OVP behavior.
    One more question remained regarding 3), is it recovered automatically or latched off? (I guess it may have the same sequence as UVP.)

    Thanks,
    S.Sawamoto

  • In reply to Shinya Sawamoto:

    Hi Sawamoto, Yes, it is automatically recovered like UVP, non-latch.

    Yuchang

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