I have a dual output isolated DC-DC module that provides ±9 V.
I want to shift the reference point to get +15 V and –3 V


I’m wondering if the TL431 shunt regulator can be used to create this virtual ground node directly
Would the TL431 be able to source and sink current in that configuration, or will it only sink current?


If TL431 alone can’t do this, what’s a proper way to make a stable virtual ground between ± rails that can handle tens of milliamps?

 

Welcome to AAC.

Is this part of a project for academic credit?

 

Is this part of a project for academic credit?

yes, I don't know what to do

 

As a courtesy, your thread has been moved to the Homework Help forum. AAC rules limit the sort of help members may give with coursework related questions to guidance in the student’s own solution.

When posting it is important to show your attempt at a solution and ask specific questions.

In the future, please post directly to the Homework Help forum.

 

hi 1231.
As this is homework I will only give a starting point.
Post your final solution
I have erased the R values.
E
.