What causes a MOSFET to short?

I'm building a Royer Oscillator, and I'm not sure why my initial MOSFET (U2) is shorting? My LT Spice simulation works somewhat, however I get a lot of current coming out of the drain (6A+), and likewise the 2 inductors drawing massive currents. Why would this be the case?

Is it because of the MOSFETs M1 and M2? Are they what's causing this massive surge in current? And hence the short in the initial MOSFET.

The power supply I'm using is rated to 6A, and it actually goes up to 6A when I turn it on, but the voltage reduces drastically.

Anyone have any ideas? (Ground is the bottom rail). What causes a MOSFET to short?

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Category: mosfet Time: 2016-07-29 Views: 1

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