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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
Hi ,
this is the macro model that I used
*$
* LM317
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* (C) Copyright 2014 Texas Instruments Incorporated. All rights reserved.
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** 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.
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*
** 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
*
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*
* Updates:
*
* Final 1.00
* Release to Web
*
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.SUBCKT LM317_TRANS IN ADJ OUT_0 OUT_1
* Encrypted macro. Content can't be viewed.
.ENDS
Thanks,
Tang
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.
Thanks & Regards,
Saket