Re: What Driver Voltage to Drive a Mosfet? (SMPS app)

On Mon, 30 Jul 2007 16:44:36 -0500, "Tim Williams"
<tmoranwms@xxxxxxxxxxx> wrote:

Why such a high F? Trying to push gate driver dissipation in exchange for
better...something?

I don't see any advantage over 100 or 200kHz, but that's me.

Tim

I'm still learning smps design..
I'm trying out a smps design of mine at 600khz (150Watts) to reduce
the size of the magnetics.

At that frequency, it probably becomes important to carefully select
the mosfet driver peak gate voltage (or driver supply rail).

My actual built and tested design works great at 100khz...I just want
to find out if I can push the design further. :)
If it goes well at 600Khz...I hope to take the design into the Mhz
next.

So..yah..the mosfet D-S switching loss is something I'm concerned
with.
Are you saying that power conversion above 200khz gets ugly?
D from BC
.