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TINA/Spice/LM3478: Where are all the pins?

Part Number: LM3478
Other Parts Discussed in Thread: TINA-TI,

Tool/software: TINA-TI or Spice Models

When I use the TINA-TI model from SpiceRack it does not give me all the pins that are available on the IC? 

Regards,

Ziad

  • Hi Ziad,

    Please look at the header of the netlist file as to know which parameters/functionalities are being modeled within the TINA/Pspice model.

    When we do our modeling, sometimes we don't fully model the IC rather "certain scope" of the IC. This "certain scope" of this IC will translate to lesser pins in the TINA/Pspice model as compared to the actual IC.

    Herman
  • Hi Herman,

    Is there a Spice model with full functionality? The one that is available for TINA-TI is for SEPIC topology. I want to use it for boost/flyback.

    Here's what I found from the netlist file:

    *****************************************************************************
    *
    ** Released by: WEBENCH Design Center, Texas Instruments Inc.
    * Part: LM3478
    * Date: 13APR2017
    * Model Type: AVERAGE
    * Simulator: TINA
    * Simulator Version: 9.3.150.328 SF-TI
    * EVM Order Number: AN-1990
    * EVM Users Guide: SNVA405A–January 2010–Revised April 2013
    * Datasheet: SNVS085W -JULY 2000-REVISED DECEMBER 2014
    * Topology Supported: SEPIC
    *
    * Model Version: Final 1.00
    *
    *****************************************************************************
    *
    * Updates:
    *
    * Final 1.00
    * Release to Web.
    *
    *****************************************************************************
    * Model Usage Notes
    *
    * 1. Since this is an average model used for AC analysis, only the pins affecting AC analysis
    * are modeled.
    *
    * 2. Make sure the value of inductors(L1 and L2),frequency adjusting resistor(RFADJ), RSL , and RSN used in
    * the testbench is passed to the macromodel appropriately. The macromodel uses these values internally.
    *
    ******************************************************************************
    .SUBCKT LM3478_AVG COMP GND SW1 SW2 VFB VIN VOUT PARAMS: RSL=2K RSN=0.02 L1=33U L2=33U RFADJ=28K

    Regards,

    Ziad

  • Hi Ziad,

    The TINA reference design is not available for Boost average model configuration. You can create that design in TINA as unencrypted average model is available on website. It contains both boost and sepic average model.

    LM3478 Unencrypted PSpice Average Model

    You can create MACRO of LM3478 boost average model in TINA-TI from unencrypted Lib file & configure test bench similar to released Pspice model (as shown below).

    Please let me know if you have any questions.