TPS2231 - About detection of /CPPE and /CPUSB

Do  you have access to an EVM to try a test? It will be quicker to try a real test if the EVM plus supporting system hardware is available.

Hi Eric-san,

Unfortunately, we don’t have EVM.

Therefore, we would like to know your opinion.

I apologize for the trouble this will cause you, but I appreciate your kind cooperation.

Regards,

Kanemaru

I have ordered the EVM and will provide test results by the end of this week.

Hi Eric-san,

I greatly appreciate your cooperation!

I’m looking forward to hearing from you.

Regards,

Kanemaru

 Can TPS2231 detect /CPPE and /CPUSB at shutdown mode(AUXIN=ON , 3.3VIN=1.5VIN=OFF)?

1. Set AUXIN=ON , 3.3VIN=ON, and 1.5VIN=ON
2. Set 3.3VIN and 1.5VIN=OFF
3. Under this condition, /CPPE and /CPUSB are "don't care" and 1.5VOUT and 3.3VOUT are turned OFF (no 3.3VOUT or 1.5VOUT discharge).

Does this answer the question?

Hi Eric-san,

Thank you for your kind support and information!

So, I understand that TPS2231 can't detect /CPPE and /CPUSB at shutdown mode(AUXIN=ON , 3.3VIN=1.5VIN=OFF).

Is my understanding correct?

Regards,

Kanemaru

Hi Eric-san,

I greatly appreciate your cooperation!

I will report this information to our cusotmer.

Regards,

Kanemaru