TPS54340B: loop gain,loop stability

ennai huang

Prodigy 20 points

Part Number: TPS54340B
Other Parts Discussed in Thread: TPS54340

What is the Ro,Co value for the "Small Signal Model for Loop Response" for TPS54340 in the datasheet?

I need to them for calculation of the loop gain which is different from the reference design;

over 5 years ago

0 Marshall_Beck over 5 years ago

TI__Mastermind 35210 points

Please look at the excel bode plotter tool available in the product folder.

https://www.ti.com/product/TPS54340/toolssoftware

That should include that information and more!

0 Marshall_Beck over 5 years ago in reply to Marshall_Beck

TI__Mastermind 35210 points

It is labeled TPS54360 and TPS54361 Family Design Excel Tool (Rev. E)

0 ennai huang over 5 years ago in reply to Marshall_Beck

Prodigy 20 points

the answer is not explicitly to make me to trust or not. it is just a reference and ask myself to figure out. I don't know why Ti describe parameters in datasheet, but doesn't give out the specific value and just let user to guess!

0 Marshall_Beck over 5 years ago in reply to ennai huang

TI__Mastermind 35210 points

Please reference the design tool we have developed and shared with you for accurate loop response approximation.

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TPS54340B: loop gain,loop stability