• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 39 subscribers
  • Views 1071 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

TINA 9 Macro for MC33201

shiva prasad3
Prodigy 30 points
Other Parts Discussed in Thread: TINA-TI

Hi ,

i'm trying to simulate open loop response for MC33201 (on semi)  in TINA 9 by inserting Macro

the simulation result from TINA is not matching with data sheet specification, but same library if i simulate using orcad 16 its matching 

is there any way to perform open loop w.r.t frequency plot

i need to perform stability analysis for my system open loop gain analysis i took as first step to verify model

note: if i perform transient analysis in TINA model works proper

thanks

shivaprasad

  • 0
    TI__Mastermind 41310 points

    Shiva,

    TINA-TI does support PSpice model import and should give you the same simulation results as PSpice for most PSpice models. Could you show the differences you are seeing with the AC simulation.

    Are you using the same circuit in Orcad and PSpice for the open loop simulation or is there some differences?

    If there is a testbench in orcad that you could zip and attach to the post along with the TINA-TI .tsc file, we could check to see if there are any issues.

    I am surprised that the transient simulation runs correctly, but the AC simulation does not.

  • 0 in reply to Britt Brooks - Online Design Tools
    Prodigy 30 points

    Hi,

    thanks for reply

    i'm attaching TSC file and simulation result from TINA and Orcad 16

    thanks

    shivaprasad

    TINA_NCV33201.zip

  • 0 in reply to shiva prasad3
    TI__Mastermind 41310 points

    Shiva,

    The reason that the two simulations differ is due to the way that the AC transfer characteristic is calculated in PSpice and TINA-TI. TINA-TI calculates the AC transfer characteristic, while PSpice calculates the AC response of the circuit. In order for the two to be equivalent, you need to have TINA-TI use the same information that PSpice uses.

    In this case, you set the VG1 IO state to None, add a voltage pin named Vin with a specified IO of Input (by default, all meters are considered output state devices). This will make TINA-TI calculate the AC transfer characteristic from the Vin pin to the Vout VM in the circuit. Please see the attached .TSC file.

    openloop_mod.TSC