Switching waveforms of the L2 FET: A 5-volt gate-drive power MOSFET

Switching waveforms of a newly announced series of power-MOSFET devices called Logic-Level-FETs (L2 FETs) and featuring a 5-volt gate drive are presented and contrasted to the more conventional 10-volt-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 2 L FET over the 10-volt MOSFET are demonstrated and discussed.