Your probably going to be hard pressed to find a model for this. I did a web search and come up only with a datasheet. I don't know if your particular version has it, but my Power Pro Version has 2 Virtual Half-Bridge PWM controllers. One says it is a Voltage Mode Half -Bridge PWM Controller and the other say it is a Current Mode Half Bridge PWM Controller. Look in the database under Power>SMPS_Transient_Virtual If yours has these you could try them and see if they meet your requirements. If not, maybe you can glean something from them in order to create a better model more suted to your application.
I know this isn't much help but thats all I have. If I would happen to find a model for it I will be sure to post it for you.
Have a Nice Day
