on the 5 v pulse input to the gate driver will a small cap protect against voltage spikes?

The TC428 gate driver has a Schmidt trigger input so rise time is not a factor

P


On 12/07/2013 05:26 PM, Robert LeClercq wrote:

If you're still using the protp bd, I would bet on inadequate gnds.  Change over to single side copperclad perf bd. You will need a 1/8" piloted spot face tool in a batt drill to cut away pads.



On Saturday, December 7, 2013 3:09 PM, rotaryeng <rotaryeng@earthlink.net> wrote:
OK thanks

p

On 12/07/2013 08:13 AM, Robert LeClercq wrote:
> Output of 16mA is plenty for running an isolated hi side driver.
>
>
>
> On Saturday, December 7, 2013 8:04 AM, rotaryeng
> <rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net>> wrote:
> I think I figured it out. The secondary is isolated.
>
> as far as I can tell the cheap one do not have enough drive
>
> 16 ma
>
> Paul
>
>
>
> On 12/07/2013 04:28 AM, rotaryeng wrote:
> >
> > How do you hook up a dc to dc converter that supplies the floating
> > high side voltage?
> >
> > Paul
> >
> > On 12/06/2013 04:14 PM, Robert LeClercq wrote:
> >> Why so big on C2? It's C1 that should be 10x C2. And  I thought 1 uF
> >> was working ok for C2. I don't think that 50/50 is required.
> >> There might be hi side drivers like that. I did search once didn't
> >> save any pn's. Try searching for isolated hi side driver. If that
> >> fails I have some tiny DC/DC converters that run from 12V in. Digikey
> >> has some priced about $10.
> >>
> >>
> >> On Friday, December 6, 2013 3:44 PM, rotaryeng
> >> <rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net> <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net>>> wrote:

> >> I can't get this to work
> >> I tried 1000 uf C2
> >>
> >> do you know of any high side gate drivers that generate the upper
> >> floating
> >> supply independent of the input signal. I guess they all asume you are
> >> going to feed them with 50/50.
> >>
> >>
> >> Paul
> >>
> >>
> >
>
>
>