Tool/software: WEBENCH® Design Tools
Hi,
I have simulated the TPS54318 part with the following inputs Vin- 4.5V to 5.5V Fsw - 1.125Mhz Output - 2.5V @ 3A 1.
When i simulated with above parameter 2 weeks(13/06/2019) before i was getting following results Inductor - 1.5uH and Vout Overshoot/Undershoot - 100mV. 2.
when i simulated it today(03/07/2019), i am getting different results Inductor - 2.7uH Vout Overshoot/Undershoot - 160mV
Could please tell me the reason? We have finalized the inductor part(1.5uH) and Fsw(1.125Mhz) based on the simulation reports.
Regards,
hareesh.
Hi Hareesh,
The WEBENCH database gets updated almost twice a month as we add more discrete components like inductor/capacitor to our data-base to provide optimized solution. This could be a reason for change in your WEBENCH design.
To verify changes for your design, Could you please share your previous design report by following below steps ?
Thanks & Regards,
Harish
Hi Hareesh,
Alternatively you can share your design by following below procedure.
Thanks & Regards,
Harish
Hi Hareesh,
Extremely sorry for keeping you awaited.
Thanks for sharing the design report. The reason 2.7uH inductor is getting selected now is due to its low cost compared to your previous design (as per your design report).
We would recommend you to proceed with your previous design as the intended target value of inductor is 1.47uH which is close to 1.5uH.
Kindly let us know in case you have any further queries.
Best Regards,
Harish
