TPA3251: UVP function for PVDD

Mochi

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

over 2 years ago

0 Luis Fernandes de Pina over 2 years ago

TI__Genius 13920 points

Hello Mochizuki,

The PVDD UVP threshold should be 8.5V.

best regards,

Luis

0 Mochi over 2 years ago in reply to Luis Fernandes de Pina

Genius 3865 points

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

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

Regards,

Mochizuki

0 Luis Fernandes de Pina over 2 years ago in reply to Mochi

TI__Genius 13920 points

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

0 Mochi over 2 years ago in reply to Luis Fernandes de Pina

Genius 3865 points

Hi Luis,

Thank you for your prompt support.

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

Regards,

Mochizuki

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TPA3251: UVP function for PVDD