Other Parts Discussed in Thread: TINA-TI
Tool/software: TINA-TI or Spice Models
Can I margin the FB pin of the TPS7A3001? It does not seem to work in the TINA simulator.
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You may not have been using the latest version of the model available on the web. I have used that version with your circuit. I also changes the -2V DC source to a PWL source and extended the run time to 10ms. Let me know if this works for you.