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UCD9222: replacement

user4289837
Intellectual 415 points
Part Number: UCD9222
Other Parts Discussed in Thread: TPS53659, TPS53667, , LM10011

Hello

Now I'm designing a C6657 application, Which's reference design used UCD9222. TI recommended that we should use TPS53659. Just want to know Can I use TPS53667 instead? Are TPS53667 and TPS53659 Pin-to-Pin compatible？

Nick Li

  • 0
    TI__Expert 5965 points
    Hi Nick,

    TPS53667 and TPS53659 are not pin-to-pin compatible. TPS53659 has more digital content, while TPS53667 will allow you to configure several parameters with external pins. So depending on your application needs both should work.

    Regards,
    Weidong
  • 0 in reply to Weidong Zhu
    Intellectual 415 points

    Hello，
    Thanks ， Weidong，I found there is a UCD9222-EP which is p2p compatible with UCD9222. What's the difference between this two components？Is there any need to modify the hardware to use UCD9222-EP ?
    Why TI recommended TPS53659 instead of UCD9222-EP?

    Nick

  • 0 in reply to user4289837
    TI__Genius 13700 points

    EP is a designation for Enhanced Product.  Typically, this means that the device has to meet additional requirements for a particular end applicxation, in this case the datasheet lists that the device is suitable for certain defense/aerospace/medical applications.  In particular, this device has been approved for use over -55 to 115 C temperature range vs the -40 to 125 C temperature range of the standard part.

    The silicon itself should be identical.

    The TPS53659 is a somewhat newer device and likely has better transient performance capabilities over the UCD9222 but requires an additional device like the LM10011 to implement AVS, the UCD9222 can implement AVS natively but some folks find it more difficult to work with given the flexibility of the digital implementation.  Either should be capable of powering the C6657 application.