This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPA3251: UVP function for PVDD

Part Number: TPA3251
Other Parts Discussed in Thread: TPA3245, TPA3255,

Hello,
When look at TPA3151 datasheet, there is not any specification of UVP threshold level of PVDD.
The other hand, on the family device TPA3255 or TPA3245 are clearly specified PVDD UVP voltage.

eg; on TPA3245
Vuvp, PVDD Undervoltage protection limit, PVDD_x 9.7 V
Vuvp, PVDD, hyst 1.25 V

Could you tell us what is PVDD voltage of UVP on TPA3251?

Regards,
Mochizuki

  •  Hello Mochizuki,

    The PVDD UVP threshold should be 8.5V.

    best regards,

    Luis

  • Hi Luis,

    Thank you for your support.

    Here is summary of those family devices specification about related UVP function.

     

                            TPA3245     TPA3251   TPA3255

    PVDD mini       12V              12V            18V    

    Vuvp limit        9.7V             8.5V          14.5V

    Vuvp hyst      1.25V             ?? V           1.4 V

     

    1. What is Vuvp hysteresis of TPA3251?
    2. Why TPA3251 Vuvp limit is lower than TPA3245 which have same PVDD mini voltage?
    3. Do you have plan to revise TPA3251 datasheet to add UVP specification?

     

    Regards,

    Mochizuki 

  • Hello Mochizuki-san,

    1. The PVDD uvp hysteresis should be 0.4V

    2. Different devices, have different architectures

    3. I can't comment on this time, we only guarantee the specs in the datasheet but will check internally if this is feasible.

    best regards,

    Luis

  • Hi Luis,

    Thank you for your prompt support.

    We will refer this E2E thread for a product design review.

    Regards,

    Mochizuki