Hi TI Team.
I am trying to simulate a design using the lm5117 but I encounter different behavior on different simulation software with a lot of problems on both softwares
I tried simulating the design on TINA TI and on PSPICE FOR TI.
PSPICE FOR TI:
No mater what I do I cant get the output to go above 45mV when my feedback is designed for 24V output.
Tina TI:
using the exact same design I am able to get the output that I want, but the moment that I try to add another input capacitor (even small one..1pF) the output goes to zero..
I cant understand why the design works on one software and on another it doesn't... also, why adding the small cap in the input changes the output so drastically ?
IMPORTENT NOTE:
THIS DESIGN IS ALREADY IMPLANTED ON A PCB AND WOKING! ( I Just need to improve little thing on it)