This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

  • Resolved

TINA/Spice/TPS55165-Q1: Model/simulation ISSUE

Prodigy 165 points
Sainath d

Part Number: TPS55165-Q1

Tool/software: TINA-TI or Spice Models

I am trying to simulate TPS55165-Q1 in fixed 12V output in pspice, when I try to connect BST1/BST2 to cap as recommended in the datasheet, I get an error saying the pin is floating , I have tried running in multiple machines but the issue remains same, Please see the screenshot below,

 

 

SETUP:

Error:

N03722 is the node name for the wire connected to BST1, N03726 is for BST2.

 

 

 

When I try to connect it without cap, it works fine till 3ms and output travel back in time at 12V constant. i.e., out is 12V like I want but in time 3ms-0ms,which shouldn’t be possible.  I have attached project files fyr.

 

 

TPS55165-Q1_sim.zipslvmca3a.zip

Prodigy 165 points
Sainath d
  • Intellectual 2880 points
    Herman Theodorus - WEBENCH Design Center
    One of our team member will look into this, but it will be after new year's holiday.

    Happy New Year!
  • Prodigy 285 points
    Abhishek Tripathy
    Hi Sainath,

    Please find my respone below.
    1. It looks like there is some issue with the project shared by you named as "TPS55165-Q1_sim.zip". PSpice (16.2 and 17.2) crashes when I try to open it. Please confirm the version you are using.
    2. BST1 and BST2 pins are not modeled. Device works properly without using capacitor at those pins. This information is mentioned in "Application notes" section in release project. These pins are supposed to be kept floating.
    3. There is a ~10ms IGN deglitch time implemented in the model. Startup time is around 1.5ms (as per datasheet). Please use the TSTOP value higher that 12ms to observe complete startup.

    Kindly let me know if you still have any query.

    Thanks,
    Abhisek
    • All TI Spice Models can be found here | All WEBENCH supported devices can be found here
      New to TINA-TI? It's a free spice simulator! Try out this short Video Training Series
  • Prodigy 165 points
    Sainath d

    In reply to Abhishek Tripathy:

    Hello Abhishek,

                            I appreciate you response. I have used SPB 16.6 ( cadence 16.6) to draw the circuit, I tried simulating without using caps at those pins, I would get 12V at 1.2ms but from there I observe output in reverse direction.

    I have attached the waveform fyr.

    I have used the same file to simulate the below response

    Circuit:

    Waveform:

    even when I connect BST1 and BST2 directly I get the same response

    Regards,

    SAINATH D

  • Prodigy 285 points
    Abhishek Tripathy

    In reply to Sainath d:

    Hi Sainath,

    It seems that there is issue with opening of the .dat file in AMS simulator. It is a common problem when the dat file is large in size. Please try restarting AMS simulator and reloading the dat fiile.

    Regards,
    Abhisek
    • All TI Spice Models can be found here | All WEBENCH supported devices can be found here
      New to TINA-TI? It's a free spice simulator! Try out this short Video Training Series
  • Prodigy 165 points
    Sainath d

    In reply to Abhishek Tripathy:

    Hi,
    I tried removing dat file and run the simulation, each time I did so! I would see the same result, but surprisingly at lower voltage, what I mean is earlier it use to run till 12V and then I use to see this response but now it happens well before that like at 5V or 3V. I ran in multiple machines I would see the same issue. Please help me on it
  • Prodigy 165 points
    Sainath d

    In reply to Abhishek Tripathy:

    I have attached the cadence 16.6 files again.lm55165-Q1.zip

  • Prodigy 285 points
    Abhishek Tripathy

    In reply to Sainath d:

    Hi Sainath,

    I simulated the project shared by you. It runs absolutely fine. Please find results below.

    I feel that there is some issue with loading the large data file in AMS simulator on your system.

    I hope this clarifies your query. 

    Thanks & Regards,

    Abhisek

    • All TI Spice Models can be found here | All WEBENCH supported devices can be found here
      New to TINA-TI? It's a free spice simulator! Try out this short Video Training Series

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.

Content on this site may contain or be subject to specific guidelines or limitations on use. All postings and use of the content on this site are subject to the Terms of Use of the site; third parties using this content agree to abide by any limitations or guidelines and to comply with the Terms of Use of this site. TI, its suppliers and providers of content reserve the right to make corrections, deletions, modifications, enhancements, improvements and other changes to the content and materials, its products, programs and services at any time or to move or discontinue any content, products, programs, or services without notice.

TI Worldwide | Contact Us | my.TI Login | Site Map | Corporate Citizenship | mobile m.ti.com (Mobile Version)

TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs and
embedded processors, along with software, tools and the industry’s largest sales/support staff.

© Copyright 1995-2018 Texas Instruments Incorporated. All rights reserved.
Trademarks | Privacy Policy | Terms of Use