Re: An extremely good MOSFET driver

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "S Gaeta by way of Terry Fritz <twftesla-at-qwest-dot-net>" <sgtporky-at-prodigy-dot-net>

Hi Ken,

This IC was used at my job on a switching supply to drive IRFP 460 mosfets.I
have never tried to use the chip in a SSTC, so I don't know how it would
behave in a "TC environment". It might be worth experimenting with though,
since the IC does the work of cranking out the waveforms. The supplies used
to glitch up when subjected to a certain frequency (I forgot which one)
during the RF immunity test, so what you found with your chip may also apply
to this one. Also, that particular chip was SMT which is probably denoted by
the "Q" at the end. I think most of us (myself included) would want to work
with the through hole version.

Sue

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, August 09, 2002 5:08 PM
Subject: Re: An extremely good MOSFET driver


> Original poster: "K. C. Herrick by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <kchdlh-at-juno-dot-com>
>
> Sue (& all)-
>
> I might look that up--except that I had bad experiences with the IR
> 2110-type devices that incorporate a charge-pump for driving the "top"
> circuit.  The electric field from my secondary (apparently) disrupted
> that circuit; I thought it would be a nifty replacement for a transformer
> but I had to go back to transformer-coupling instead.
>
> Ken Herrick
>
> On Fri, 09 Aug 2002 11:55:01 -0600 "Tesla list" <tesla-at-pupman-dot-com>
> writes:
> > Original poster: "S Gaeta by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> > <sgtporky-at-prodigy-dot-net>
> >
> > > That's a NO NO!!!  A friend of mine who does power supply design
> > for a
> > > living says you can get driver IC's which provide the necessary
> > time
> > > delay between pulses, but I haven't gotten a typical part number
> > as yet;
> > > will check with him and post that here if someone else hasn't done
> > so
> > > already.  Same problem happens with push-pull self-excited
> > transistor
> > > inverters, of course, and makes the transistors get HHOOTT!
> > >
> > > Ed
> >
> >
> > UC3865Q may be a very useful IC for this purpose.
> > Sue
> >
> >
> >
> >
>
>