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TPS54360B-Q1: TPS54360B changes from TPS54360

Cosmin P
Intellectual 1690 points
Part Number: TPS54360B-Q1
Other Parts Discussed in Thread: TPS54360B, TPS54360, , TPS54360-Q1

Hello,

Regarding the diferences between the TPS54360 (NRD) and the TPS54360B.
I found no diferences betrween the datasheets specifications.

First, the TPS54360B is not recognized as a valid part number in the E2E tool.

I found for the TPS54360-Q1 and the TPS54360B-Q1 the post stating that the 'B' version has improved output overvoltage protection.
I assume that this is valid for the non-Q1 versions as well.


There are no details in the datasheet about the OVP functionality, just the basics.
Improved how?
With no details one would expect the changes to be significant enough not to be done via a PCN.
Customer needs details for replacing the part in a qualified high volume prduct, changes generating a new part number, albeit not changing the datasheet may have application impact (otherwise why change it...)

Thank you

Cosmin P.

  • 0
    TI__Genius 11040 points
    Hello Cosmic,

    I understand the confusion regarding the differences between the two devices. As you mentioned the TPS54360-Q1 is not recommended for new designs, and the TPS54360B-Q1 is recommended for new designs.

    I will forward this request to the product expert who will be able to support your questions. We will follow up with you on Monday.

    Best Regards,
    Katelyn
  • 0 in reply to Katelyn Wiggenhorn
    TI__Expert 6245 points
    Hello Cosmic,

    The TPS54360B is recently released so I will email the E2E team to make sure that it appears in the thread tracking tool.

    The TPS54360B is improved in two ways over the TPS54360:

    1) Packaging is improved to reduce the chance of failure due to aging. A special die coat is used to improve resistance to environmental conditions causing aging.

    2) Noise resistance of a key circuit inside the IC is improved. This reduces the likelihood of high frequency combined with high input voltage, high current, and inductive catch diode from preventing accurate operation of the OVP circuit:

    a. The specifications for the OVP circuit have not changed since the noise tolerance of the OVP circuit is not specified.

    b. While these changes could be made by PCN, filing a PCN on an older part can be more cumbersome than simply creating a new part number.

    Regards, Robert