AN-7501 Switching Waveforms Of The L2FET: A 5 Volt Gate-Drive Power MOSFET
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چکیده
The switching waveforms of a series of power MOSFET devices called Logic Level FETs (L2FETs) and featuring a 5V gate drive are presented and contrasted with those of the more conventional 10V gate drive devices. A new method of characterizing MOSFET switching performance is discussed in which the MOSFET is treated as a vertical JFET driven in cascade from a low voltage lateral MOS. The 2:1 advantage in rise and fall time and the 4:1 reduction in switching “dynamic V(SAT)” dissipation with constant drive power of the L2FET over the 10V MOSFET are demonstrated and discussed.
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