I need help in designing and simulating a circuit on PSIM/Matlab/PSpice for a simple DC motor going forward/stop/reverse using a 12Vdc source

My application is a power window DC motor controlled by up/neutral/down window switch - any tips/ideas?

 

You need an H-bridge on each side of the motor.

There are many such circuits in IC form out there.

Do you need to design it using discrete components, or ICs?

BTW - is this a homework assignment for a course?

 

Its a project (have to simulate, price out my parts & compare with whats available in the market)

Discrete components

 

You'll discover there is some formidable competition out there.
For example, ST Microelectronics' complete H-bridge in a chip.
http://www.st.com/stonline/press/news/year2004/p1198c.htm
Take a look at their datasheets. The VNH2SP30-E is a pretty nifty chip, too.

You'll get a ton of hits with this search:
http://www.google.com/search?hl=en&q=Automotive+H-Bridge+driver

 

Thanks for the help - will look into it