The following components have unused pins
U1
Device PARAM_OPTO found in C:\Program Files (x86)\SIMetrix560\support\Models\generic.lb
Device IRFP264 found in C:\Program Files (x86)\SIMetrix560\support\Models\mosfet.lb
Device PN2907 found in C:\Program Files (x86)\SIMetrix560\support\Models\bipolar.lb
Device 30eph06 found in C:\Program Files (x86)\SIMetrix560\support\Models\ir_dio.lb
Device D1n4148 found in C:\Program Files (x86)\SIMetrix560\support\Models\diode.lb
Device TL431 found in C:\Users\nhi\Desktop\3895\UCCx895_PSPICE_AVG\ucc3895average.lib
Device UCCx7324 found in C:\Users\nhi\Desktop\3895\UCC3895_PSPICE_TRANS\ucc3895.lib
Device UCCx895 found in C:\Users\nhi\Desktop\3895\UCC3895_PSPICE_TRANS\ucc3895.lib
There are errors in the circuit. Simulation aborted
ucc3895average.lib (144): ...
*** ERROR *** Missing nodes. This device has 2 terminals
ucc3895.lib (700): ...
*** ERROR *** Missing nodes. This device has 2 terminals
ucc3895.lib (701): ...
*** ERROR *** Missing nodes. This device has 2 terminals
ucc3895.lib (702): ...
*** ERROR *** Missing nodes. This device has 2 terminals
ucc3895.lib (705): ...
*** ERROR *** Missing nodes. This device has 2 terminals
ucc3895.lib (706): ...
*** ERROR *** Missing nodes. This device has 2 terminals
ucc3895.lib (708): ...
*** ERROR *** Missing nodes. This device has 2 terminals