How to decide addition soft start of TPS82085.

Bob Lee62837

Other Parts Discussed in Thread: TPS82085

Dear support member,

My customer used TPS82085.

My customer considered the addition soft start of TPS82085.

I have a question about how to decide of RCD circuit.
I have attached file.

Could you check attached file?

Best regard.
BoB Lee.

0 Chris Glaser over 8 years ago

There is no formula for calculating the added SS time. You can measure it empirically or use the transient model on the product page.

0 Bob Lee62837 over 8 years ago in reply to Chris Glaser

Dear Chris Glaser,

Thank you very much for reply.

May I ask add a question?

If add RCD circuit,
Does have a place to be careful in the layout?

Best regard.
Bob Lee.

0 Chris Glaser over 8 years ago in reply to Bob Lee62837

There is nothing special required but those components should be close to the FB pin to keep that net small.

Power management forum