I'm using Multisim in an attempt to simulate a flyback supply design reference by Texas Instruments that makes use of a voltage controller - the UCC28700(http://www.kynix.com/uploadfiles/pdf65976/UCC28700DBVR.pdf). Multisim has no SPICE model natively nor does it exist for download at TI's website.
Does anyone have any ideas on how I can model it or at least get a approximate (even if ideal) substitute?
I tried to build more or less the same circuit as in the design reference but instead of using Texas' IC, I am simply PWM'ing the FET's gate. Of course this has the implication of not actually using feedback (the IC uses both voltage and current sensing techniques), which was the aspect I actually want to simulate and validate.
Still no progress. Insights, anyone?
Added 8 years, 6 months ago.