TPS65131: Need a positive and negative output solution

Hi Jimmy,

Do you have lower VIN operations like below 5.5V?

BR

Patrick

Hi Patrick,

No Just have 24V

You could use a transformer driver like an SN6507.

Just need non-ISOlation. thanks your reply

Hi team.

May I use series connection two power module as a bipolar output?  

Hi Jimmy,

You mean parallel two converters to generate positive and negative separately?

Hi team,

yes, maybe use a converter to generate negative. use same converter to generate positive.

I found some application below. Is it work?

https://www.ti.com/lit/an/snva740/snva740.pdf?ts=1735057447574&ref_url=https%253A%252F%252Fwww.ti.com%252Fsitesearch%252Fen-us%252Fdocs%252Funiversalsearch.tsp%253FlangPref%253Den-US%2526searchTerm%253DPositive-+and+Negative%2526nr%253D35060

Hi Jimmy,

Or you can use one buck converter for positive and one inverting buck-boost converter for the negative.

BR

Patrick

You know the SN6507 is designed precisely for this type of application, right?

Yes, you can consider this part.

Hi team,

Yes I know. but will use 2 different parts. its will cause component management difficulties

Hi Patrick,

Yes, But I think the ground of the DAC will be different from the ground of the system

Hi Jimmy,

So do you have a schematic or functional block diagram could share with us?

BR

Patrick