LS7290 is a good replacement for L297. There is no microstep. It is in datasheet, but it useless. Wait for the LS8290/LS8291
They support microstep, slow/fast/mixed decay modes. I am working on the schematic and PCB design now. I hope it will be done soon.
P.S. It was nice to see my schematic for bipolar drive on LS7290 taken from other forum in the first post. |