TPS23731: Way to add power good function

Satoshi

Guru 19645 points

Part Number: TPS23731
Other Parts Discussed in Thread: TPS2373,

One customer want to add detect the primary voltage and output signal, nearly TPS2373's Power Good function.

Is there recommend solution or circuit for TPS23731 with additional power good function?

Best regards,

Satoshi

over 3 years ago

+1 Diang Xing over 3 years ago

TI__Mastermind 37121 points

Hi Satoshi, thanks for your question. You may utilize the output "VB" pin to achieve a similar function. The output voltage of "VB" will be 5V after the TPS23731 starts work (at that time, the primary voltage should normally be stable). You can use that 5V as an "ENABLE" signal. You can also add a RC circuit to further delay the "ENABLE" signal.

0 Diang Xing over 3 years ago

TI__Mastermind 37121 points

Hi Satoshi,

Please let me know if using "VB" pin can solve your question.

Best regards,

Diang

0 Satoshi over 3 years ago in reply to Diang Xing

Guru 19645 points

Hi Diang,

Sorry for my reply delay,

My question was cleared.

Thank you for your answer.

Best regards,

Satoshi

0 Diang Xing over 3 years ago in reply to Satoshi

TI__Mastermind 37121 points

Hi Satoshi,

Thanks for your reply and glad to help!

Best regards,

Diang

Power management

Power management forum

TPS23731: Way to add power good function