LM5155: Bode plot in LM5155_Excel_Quickstart_Calculator_for_Boost_Converter_Design

Michiaki Tanii

Part Number: LM5155

Hi team,

Our customer is considering the value of output component with “LM5155_Excel_Quickstart_Caluculator_for_Boost_Converter_Design” and get bode plot as following.

Bode plot shows the pole around 200kHz. Could you kindly advise why the pole is seen around 200kHz ?

The bode plot shows with default configuration in the spread sheet.

Thank you and best regards,

Michiaki Tanii

over 4 years ago

0 Stefan Schauer over 4 years ago

TI__Guru 58521 points

Hi Michiaki,

i think you planned to attach the excel sheet but it looks like this is missing.

Can you attached it to this thread.

Thanks,

Stefan

0 Michiaki Tanii over 4 years ago in reply to Stefan Schauer

TI__Expert 4610 points

Hi Stefan,

Please find the below.

0 Stefan Schauer over 4 years ago in reply to Michiaki Tanii

TI__Guru 58521 points

Hi Michiaki,

this is from the pole through the Inductor and slope compensation,

Section: Current-mode boost

Best regards,

Stefan

+1 Stefan Schauer over 4 years ago in reply to Stefan Schauer

TI__Guru 58521 points

Hi Michiaki,

I haven’t heard from you for some days, so I’m assuming you were able to resolve your issue. If this is the case, please click the "This did resolve my issue" button.

If the issue still exist please describe the current status of your issue and any additional details you may have to assist us in helping to solve your issues.

Regards,

Stefan

Power management

Power management forum

LM5155: Bode plot in LM5155_Excel_Quickstart_Calculator_for_Boost_Converter_Design