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TPS65218D0: EEProm Reprogrammability

Part Number: TPS65218D0
Other Parts Discussed in Thread: TPS65218

Hi Team,

 

 

Principally we need to update some of the with “E2” marked default values during the development, so at the prototypes and finally for the finished product, since none of the existing programmed derivates is fitting 100%.

 

We would like to understand how the yellow marked sentence have to be understood, 1 or 2:

 

  1. The final values can be programmed during the production process / assembly and there is the recommendation not change it later in the field, e.g. during an field SW update. (In our case, we do not plan / want to update these settings in the field)
  2. There is the recommendation not to update at all the default values in the EEPROM for the final product.

 

If the 2. phrase case would apply, then the internal EEPROM is only intended to be there for development / prototyping purposes?

If so, what would be the process we would need to follow then? Is there a special programmed chip required finally? How would that work?

Best regards,

Simon

  • Hi Simon,

    Thanks for posting this question on E2E so others can benefit from the response. It is definitely a note on the datasheet that needs some clarification. The TPS65218 PMIC family is user programable so you can buy samples of any orderable part number and reprogram the EEPROM until you find the settings that meet the system/application requirements. However, for production we strongly recommend using the "blank EEPROM" which corresponds to TPS6521815 rather than re-programming an already programmed NVM. Most of the TPS65218x programmed orderable part numbers have EEPROM settings to match the power requirements for specific processors. 

    Thanks,

    Brenda