How to add a bulk capacitance to a Webench design?

user4544767

Other Parts Discussed in Thread: TINA-TI

I have (various) TI SMPS designs on production circuits. I would like to simulate them.

The DC/DC buck converters have a local, say, 2x47uF ceramic load capacitors, but at some distance, 5-10cm there are often various other parallel combinations of ceramic input capacitors (say, 8x22uF), in parallel. Is there any way to simulate their effect on the loop response?

over 8 years ago

0 Nikhil Gupta (Product Folder Models) over 8 years ago

TI__Mastermind 39210 points

Hello,

For SMPS loop response, you will need an average model. It would be best to do this in TINA-TI which is a free simulator from TI. After you have your simulation setup in TINA-TI for the local caps, add the trace resistance for the remote caps and the caps themselves and then you should be able to simulate the loop response.

0 user4544767 over 8 years ago in reply to Nikhil Gupta (Product Folder Models)

Prodigy 240 points

ok, thanks. I was hoping to now have to avoid having to learn another sim tool...

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How to add a bulk capacitance to a Webench design?