Dear TI,
I am trying to simulate UCC28C40 as a boost converter,
It is already used in one of our client design, due to some problem we are analyzing it again.
When I simulate the same design in TINA, the simulation showing " Operating point not found. Component: U1.XAMP..Q1" note window.
For reference, TINA design file attached.
Please suggest me and do the needful,
thanks,
Vishwanath G
Hi Vishwanath,
Your sim file schematic shows COMP open and this is the cause of the first error. When you run a transient sim, you see this error message below:
I connected COMP as shown below - your COMP connection may look different, depending how your boost converter is compensated:
Now when I run the sim, I see another error related to the fact that you have capacitors connected to DC sources. This means the initial conditions are not zero (the capacitors are seeing a DC voltage present before the simulation begins at t=0) and to run a transient response you have to select Analysis-->Transient-->"Use Initial Conditions."
Now the simulation runs without errors and you can begin to fine tune the converter according to your design requirements. Another helpful simulation tool for analyzing power stages is TI Power Stage Designer. I like this tool because it is independent of any specific PWM controller. Between TI Power Stage Designer and the TINA sim, you should be well on your way. Thanks for connecting through E2E.
Regards,
Steve M
