Increasing the current capacity of a stepper controller using Mosfet

[varunme]

can we increase the current capacity and protecting a stepper driver like TB6600 using external mosfet ?

 

[Electro nS]

no you cannot , these have built in bipolar transistors in Hbridge configuration to drive the 2 coils of Bi-polar stepper motor .

what you really need is a "allegro" A4989
this have all the "hardware" needed for microstepping and gate driving circuitry , So you can connect your outside mosfets directly to this IC . the control is via SPI as i remember .

this is the link :**broken link removed**

 

[jarvisedwin]

no you cannot increase the capacity.......