WEBENCH® Tools/TPS54331: TPS54331DR WEBNCH Compensation Simulation Error

Cheney_Sun

Part Number: TPS54331

Tool/software: WEBENCH® Design Tools

When using TPS54331DR Buck IC as bellow sch.12V to 5V 3A Load.The WEBNCH Tools can not calculate the right compensation .And can not calculate the right compensation components.

over 6 years ago

0 Amod Vaze over 6 years ago

TI__Mastermind 26820 points

Hi Cheney_Sun,

Can you please share your design using public URL option? Snapshot shown below for reference.

Regards,

Amod

0 Cheney_Sun over 6 years ago in reply to Amod Vaze

Intellectual 595 points

webench.ti.com/.../SDP.cgi

Thank you !

0 Amod Vaze over 6 years ago in reply to Cheney_Sun

TI__Mastermind 26820 points

Thanks for sharing! Since Cout is higher, you'd need a larger Rcomp to get a higher crossover frequency. If you increase the Rcomp max limit from 100k to something like 400k, you should be able to auto compensate.

Here is an example compensation in this shared design: https://webench.ti.com/appinfo/webench/scripts/SDP.cgi?ID=020668EE7AFDB4B3

0 Cheney_Sun over 6 years ago in reply to Amod Vaze

Intellectual 595 points

Hi Amod：
Thank you for your help.I solved this problem.
Cheney_Sun

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WEBENCH® Tools/TPS54331: TPS54331DR WEBNCH Compensation Simulation Error