🚀 go-pugleaf

in article <1991Mar18.193938.14805@cs.cmu.edu>, mkb@rover.ri.cmu.edu says:
> I don't think such a thing should be too complicated, but
> our home brew attempt (with a push/pull FET pair and some compensation for the
> slower P-channel device) suffers a bad case of ringing induced, i believe, by
> back EMF from the motor.

The most likely cause of your ringing problem would be the series inductance of
the driver fighting with the inherent capacitance of the FET's gate.  If using
a discrete gate driver (such as those from Micrel), try running the lead to the
gate through a ferrite bead, if you can get your hands on a few.

There are a few circuits in back issues of EDN, it you *really* want to go
homebrew.  Offhand, I'd recommend sticking with your original design and using
the ferrite beads first, before you scrap your design.  The only real thing you
have to watch out for is to make sure that you never get both FETs turned on at
the same time (such as in a transition, but you mentioned compensating for the
P-channel device).

I don't get here very often, so if you want to leave a reply, don't be offended
if you don't get an immediate response.  My access to this machine has kind of
dropped off some.  :^)

As Confucius say:  "Good ruck!"