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Re: MOSFET drivers

Original poster: Vardan <vardan01@xxxxxxxxxxxxxxxxxxxxxxx>

Hi Herwig,
I did not read all of this, but it appears to be cross conduction shoot-through in the driver: 

http://ww1.microchip.com/downloads/en/appnotes/00799b.pdf

Dissipation is directly proportional to frequency.

Cheers,

        Terry


At 08:24 AM 1/29/2006, you wrote:


SSTC coilers,

Could somebody please explain, why drivers like TC 4421 can't be used
at frequencies of a few MHz? As I've found, they heat up rapidly,
even if no capacitive load is connected to the output.

 Do they have a large output capacity, which is loaded and unloaded,
converting the energy to heat? Some hams claim to operate these
drivers up to 10 MHz.

Any help is appreciated.


Bye             Herwig

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