I want to model a TL431 voltage reference or similar.
I can't seem to find any voltage reference type components.
How do I go about that?

by L.Shaw
October 19, 2021

Have you tried the Wikipedia model (at the top right of the page, the model with a comparator)? It may not repro the dynamic effects (capacitance and other characteristics at high frequency), but should perform well statically (or at relatively low frequency).

by vanderghast
October 19, 2021

Could you point me towards the "wikipedia model" please? I have no models at the top right of any page as far as I can tell..?

by L.Shaw
October 19, 2021

1 Answer

Answer by vanderghast

This is a crude approximation for the TL431, adapted from The model may become incorrect at high frequency.

+1 vote
by vanderghast
October 20, 2021

Your Answer

You must log in or create an account (free!) to answer a question.

Log in Create an account

Go Ad-Free. Activate your CircuitLab membership. No more ads. Save unlimited circuits. Run unlimited simulations.

Search Questions & Answers

Ask a Question

Anyone can ask a question.

Did you already search (see above) to see if a similar question has already been answered? If you can't find the answer, you may ask a question.

About This Site

CircuitLab's Q&A site is a FREE questions and answers forum for electronics and electrical engineering students, hobbyists, and professionals.

We encourage you to use our built-in schematic & simulation software to add more detail to your questions and answers.

Acceptable Questions:

  • Concept or theory questions
  • Practical engineering questions
  • “Homework” questions
  • Software/hardware intersection
  • Best practices
  • Design choices & component selection
  • Troubleshooting

Unacceptable Questions:

  • Non-English language content
  • Non-question discussion
  • Non-electronics questions
  • Vendor-specific topics
  • Pure software questions
  • CircuitLab software support

Please respect that there are both seasoned experts and total newbies here: please be nice, be constructive, and be specific!

About CircuitLab

CircuitLab is an in-browser schematic capture and circuit simulation software tool to help you rapidly design and analyze analog and digital electronics systems.