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TPS54331: simulation for TPS54331 in inverting buck-boost application

Part Number: TPS54331

Customer wants to use TPS54331 for Vin=15V/Vout=-5V, with Iout=1A. They tried to download the PSpice Model in ti.com to implement the simulation with SIMetrix  first, but it failed to run the simulation circuits. Could you please help check whether it can work with the TPS54331 PSpice model in SIMetrix ? Could you please help suggest the example circuits for them? Thank you. 

  • Hi Aki,

    The TPS54331 PSpice Model has an internal GND that prevents it from being modeled in an inverting buck-boost configuration. With regard to example circuits, there is an “Inverting Power Supply Calculator for SWIFT DC/DC with Integrated FETs” on the converter's webpage that may be of use in helping to choose components. There is also the SLVA317B App Report that covers this topic and uses a similar converter.

    Please let me know if you have any other questions.

    Sincerely,

    Kyle Patrick