TINA/Spice/LM317: LM317

zhenchao tang

Part Number: LM317
Other Parts Discussed in Thread: TINA-TI, , TL081

Tool/software: TINA-TI or Spice Models

I am using LM317 spice model to simulate my design circuit but I found out that the current from the adjust is not 50 micro Ampere as the theoretical. With this reason I cannot get my aspected result .From the picture below the VF2 value should be 11.25V but it only give me 20.58mV. Thanks

over 6 years ago

0 Manoj Toppalad over 6 years ago

TI__Prodigy 370 points

Hi,

Thanks for reaching us.
Could you please share the TINA model which you are testng out?

Thanks,
Manoj T

0 zhenchao tang over 6 years ago in reply to Manoj Toppalad

Prodigy 60 points

Hi ,

this is the macro model that I used

*$
* LM317
*****************************************************************************
* (C) Copyright 2014 Texas Instruments Incorporated. All rights reserved.
*****************************************************************************
** This model is designed as an aid for customers of Texas Instruments.
** TI and its licensors and suppliers make no warranties, either expressed
** or implied, with respect to this model, including the warranties of
** merchantability or fitness for a particular purpose. The model is
** provided solely on an "as is" basis. The entire risk as to its quality
** and performance is with the customer.
*****************************************************************************
*
** Released by: WEBENCH Design Center, Texas Instruments Inc.
* Part: LM317
* Date: 11DEC2014
* Model Type: TRANSIENT
* Simulator: TINA TI
* Simulator Version: 9.3.50.304 SF
* EVM Order Number:
* EVM Users Guide:
* Datasheet:SLVS044V朣EPTEMBER 1997朢EVISED FEBRUARY 2013
*
* Model Version: Final 1.00
*
*****************************************************************************
*
* Updates:
*
* Final 1.00
* Release to Web
*
*****************************************************************************
.SUBCKT LM317_TRANS IN ADJ OUT_0 OUT_1

* Encrypted macro. Content can't be viewed.

.ENDS

Thanks,

Tang

0 Manoj Toppalad over 6 years ago in reply to zhenchao tang

TI__Prodigy 370 points

Hi,

Also could you please share the test setup file (.tsc file)?

Thanks,
Manoj

0 zhenchao tang over 6 years ago in reply to Manoj Toppalad

Prodigy 60 points

Hi,

I had try different .tsm files

Thanks,

Tang

T1LM317_TRANS.TSM T2LM317_TRANS.TSM

0 Herman Theodorus over 6 years ago in reply to zhenchao tang

TI__Genius 9775 points

Hi Tang,

Can you provide the .TSC as Manoj requested? .TSC file is the schematic file (not the model netlist file nor .TSM file). This is the file when you click and open it will show the snapshot schematic picture that you post on your very first post (the one showing LM317 wired with TL081 together with through R3 etc)

Herman

0 zhenchao tang over 6 years ago in reply to Herman Theodorus

Prodigy 60 points

Hi Herman

Sorry for the late reply ,attached with my .TSC file.

Thank

Tang 317 with 081.TSC

0 Saket over 6 years ago in reply to zhenchao tang

TI__Intellectual 2680 points

Hi Tang,

I have made changes in attached TINA schematic as per released TINA-TI reference design and ran transient simulation till 240m. It was 1u in your test bench which seems very small in order to reach proper steady state.

PFA TINA schematic working as expected.

4024.317 with 081.TSC

Thanks & Regards,

Saket

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TINA/Spice/LM317: LM317