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TPS65094: Different OTP of TPS65094x

Part Number: TPS65094

Hi,

Look in to the table of summary of TPS65094x OTP difference, our customer want to check that the difference between 650940 and 650944:

1. In what condition or application, VTT Iocp will be different as 1.8A and 0.95A?

2. Why LDOA1 needs to be always on?

3. Why the 3 LDOs got different default setting?

4.  In what condition or application, PMICEN is different

Thank you!

  • Hi Chentsu,

    Both can support Apollo Lake, it just depends what choices the customer is making for their system. The 944 was a variant of 944 for a use case where it was desired to have LDOA1 always on. The PMICEN changes are shown in 7.2 to support this always on behavior.

    Since VTT LDO is disabled for this OTP so current limit setting does not matter. Same for LDOA2 and LDOA3. The setting for these three was DO NOT CARE which is why they happen to be different in the TPS650944 OTP. They do not matter.