TPS54561: 100% duty cycle confirmation

Allen Lu

Intellectual 1990 points

Part Number: TPS54561

Hi team:

My customer want to use TPS54561 at this parameter, wanna to check how make this 100% can work, and got confuse use some cal-tool for reference. Can you help to take a look?

tks!

Vin 24v

Voutput 23V 3A, 500khz.

1. it seems work in this Drop_out_calc_revA tool..

2.Not work in TPS54360-361FAMILY_CALC_TOOL_REVE tool.

over 1 year ago

0 Elena Gao over 1 year ago

TI__Genius 13735 points

hi, Allen,

Could you share the first tool down link, I didn't have that one.

Elena

0 Allen Lu over 1 year ago in reply to Elena Gao

TI__Intellectual 1990 points

4186.Drop_out_calc_revA.xlsx

hi ,attached.

0 Henry Kou over 1 year ago in reply to Allen Lu

TI__Expert 3766 points

Hi Allen,

I would use the Webench simulator tool at the following link. I put in your parameters, and I believe the system can be run.

For more accuracy, please try the PSPICE simulation as it has also been validated with bench data.

Regards,

Henry

0 Allen Lu over 1 year ago in reply to Henry Kou

TI__Intellectual 1990 points

Hi Henry:

Tks for your comments. It seems to work in PSpice.

0 Henry Kou over 1 year ago in reply to Allen Lu

TI__Expert 3766 points

Sounds good, marking resolved to close the thread. Feel free to reopen if you need anything.

Regards,

Henry

Power management

Power management forum

TPS54561: 100% duty cycle confirmation