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.

TPS549D22: Issue with programming the EEPROM.

Part Number: TPS549D22

Hello,

We're making the programming support for TPS549D22 and we're faced with following issue:

By the User's Guide the address D2h should contain value 13h (preprogramed in production), but we read 12h from this address. It doesn't matter whether we read device using our programming tool or TI's SW Fusion Digital Power Designer. Our customer also sent us testing configuration where address D2h contains value 14h, this value we program into device, but we're unable to reprogram address D2h in device neither with our programming tool nor TI's SW. BTW: TI's SW doesn't report that address D2h wasn't reprogrammed, we observed this from the captured communication on PMBus.

Unfortunately we don't own TI's evaluation module TPS549D22EVM-784 and we're trying to program device on in our programming module. We're worry that device is not properly connected in our module so I would like to ask you if you can provide minimal HW circuit for programming the device.

Best regards,

Frantisek