Re: [CAD_CAM_EDM_DRO] need components for stepper drivers

Bryan Mumford wrote:

> I'm looking for components with which to build a microstepping,
> current chopping, bipolar motor driver for currents up to 2 amps. The
> L297/298 only support half stepping, the 3955 only support 1.5 amps,
> and the SLA7044 is unipolar. Does anyone have experience with
> something else?

Yes. Use IR HexFETs like the IRF620 and the IR2113 driver chip.
IR knows their fets REALLY well, so their driver chip is a very good unit.
You still need to developt the microstepping waveform and the current
chopping control circuit.

Jon