Jeremy,
The APTGLQ200H120G part looks outstanding, and the price tag matches that.
Assuming you use a good driver that switches the IGBTs right near the zero
crossing in primary current, they should be capable of driving a fairly
large tesla coil. Id suggest operating within the 770A spec on the parts,
but at 600V thats quite powerful. Provided they have good cooling, one of
these parts could probably drive a 5-10kW coil.
There really isnt an "Fmax" for a part, its a continuous curve of
"operating current vs frequency". Id suggest running at <100khz if you
really want to push the peak current level to the max, but they would still
work fine at less peak current and a higher frequency.
Steve
On Sun, Jul 6, 2014 at 9:52 AM, Jeremy Gassmann <jeremyee78@xxxxxxxxx>
wrote:
> Hello everyone. I am starting my journey on the DRSSTC road and have some
> questions regarding the heart of the system...the IGBT. There are a lot of
> options out there including half bridge packages and even full bridge
> packages. Looking at the data sheets shows a lot of characteristics such as
> input and output capacitance, rise and fall times, and switching energy. My
> question is: what are the most important factors to look at when selecting
> a device? Obviously current and voltage ratings are very important but what
> about keeping capacitance as low as possible, etc? Are there any good
> documents out there the correlate these parameters to an fmax of the
> device?
>
> I did find a device that looks like it would be a good candidate: the
> Microsemi APTGLQ200H120G. It is a full bridge power module. Anyone work
> with this device or know if there any reasons not to use it? Thank you all
> very much for the help!
>
> Jeremy
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