Britt;
I'm not pleased with either the reference circuit or the model itself. As a "reference circuit" it does not really illustrate how the device is likely to be applied. I suggest you use the LM5104 model with a half-bridge made from two (IRFB4410, for example) N-ch MOSFETS. This circuit would illustrate something that is actually useful.
Why does the circuit show Vdd source (V2) to be a square wave instead of a DC power supply? Who draws these things?
If this TINA circuit is simulated, it works.....too well. There is something wrong with the boost circuit in the model; it shows proper operation at 100Hz switching rate with a boost capacitor (Cboot) of only 1pF. This is clearly impossible.
While I'm at it, I'll complain about the LM5104 data sheet as well.-- a trifecta. The subject of calculating the proper size for the boost capacitor is completely overlooked. It is a shame that a TI customer has to consult a Fairchild or International Rectifier gate driver data sheet to find data on this important parameter.