--- In Electronics_101@yahoogroups.com
, "Ken Stuempges"
> Hi all
> My first post - and a question. I am making a small oscillator to
> drive an IGBT, which in turn will drive an ignition coil to generate
> hi-voltage sparks. The oscillator is a simple 555 in Astable mode,
> running between 150 to 200 Hz (plenty slow). The IGBT is an
> International Rectifier IRGB14C40L. I don't think trying to use
> the 555 output to drive the IGBT will cut it, and rather than play
> around with a transistor or two make a suitable driver, I am
> considering purchasing a couple of MOSFET drivers - namely IXYS part
> number IXDN404. Both are available from Digikey, as are their
> These look like a simple, cheap, and reliable driver for the IGBT.
> is an 8 pin DIP, with two drivers on board, (only need one). The
> power source for all this will be a 6 volt SLA battery.
> Has anyone used one of these drivers, or similar?
Shouldn't you put a "FreeWheel" diode between the emiter and
collector of your IGBT, to save it from voltage kick-back?