I am using Texas Instrument's TINA simulation software. I want to do simulation of circuit i.e. that can be used as USB charging device for smartphones .It is a buck converter that converts 110Vdc into 5Vdc,2A. I have a schematic in which there is one opto-coupler (O1)named TCMT1100 i.e also not not available in the TINA library. There is no TINA library file of TCMTTCMT1100 available on internet too. When I tried checking for alternate component ,it is also not available . Even there is not a single opto-coupler available in TINA library