Hi Thirupathi,
thank you for using the E2E forum.
Best is to use the quickstart calculator for that:
https://www.ti.com/tool/download/LM5118QUICK-CALC
Best regards,
Stefan
Hi Ubaid,
OK, sorry did not expect that modification, so that should be OK.
I still do not understand why you see the SS dropping and what could be the root cause for that, esp. as you see this behavior on multiple boards.
I have put now your design into…
Hi Najma,
his adds additional slope compensation if Vin is > 20V.
See also the design calculator :
https://www.ti.com/tool/download/LM5118QUICK-CALC
Best regards,
Stefan
HI Naveen,
can you share all design parameters used for Webench.
You can also use the Quickstart Calculator:
https://www.ti.com/tool/download/LM5118QUICK-CALC
It allows you a better control and access to the parameters.
Best regards,
Stefan
Hi Kazuya,
Thank you for reaching out. Do you mean the modification on our LM5158EVAL board ( https://www.ti.com/tool/LM5118EVAL )? If yes, then more components in addition to the feedback network needs to be changed, because:
All output capcitors C9-C14…
Hi Rudrappa,
Thank you for reaching out with your question.
Please use the LM5118 excel based quick-start calculator. The spreadsheet runs through the calculation in the datasheet.
www.ti.com/.../lm5118quick-calc
Thanks,
Garrett
Hi Lee,
It sounds like it might be related to the compensation of the control loop. Please use the LM25118 quick-start calculator to double check the loop compensation values.
www.ti.com/.../lm5118quick-calc
Thanks,
Garrett
Evert,
Those output voltages are well within the range of the LM5118.
Here is a link to the LM5118 quick start calculator, this should help starting off the design.
http://www.ti.com/tool/lm5118quick-calc
-Garrett
Nandu,
Here is a link to the quick start calculator. It will help you calculate some of these componet values.
www.ti.com/.../lm5118quick-calc
1. R6 is used to add more slope compensation when VOUT is large.
2. R11 and C22 make a up a low pass filter…
I see you have been waiting for a response. And somehow your thread of your post was marked "Closed'. Anyway, would you please go to the following webpage and use the Quick Start Calculator?
http://www.ti.com/tool/lm5118quick-calc
Best Regards…
