Their are variety of stepper motor drives available in the market with high current ratings like 10 amps and more but to design a 10 amp it is very difficult. i have started working with it with my interest in motion control systems and cnc machines. l297 is a traditional translator which translates the clock and direction in a specific step codes with current controlling. these specific codes are than feeded to p and n type mosfets. the arrangement of this mosfet is done in such a manner that current can flow bidirectional. this arrangement is known as H bridge
above circuit shows the arrangement of mosfet, l297 and motor and it is 100% working. please note that this is the primitive type and more further components are needed to complete it like the protection diodes, fuse, etc. soon i will work on its enhanced circuit with all necessary things and pcb layout
if you want to see the working of this circuit please download the isis file which i included in this post
note : to move motor just push the button
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