Comparing Mosfet Drivers

D from BC · 2009-03-24T23:57:15+00:00

In one corner weighing in at an impressive 9Amps peak is the MicrochipTC4421 mosfet driverAnd in the other corner weighing in at a whimpy 2.5Amps peak isFairchild'ss FAN3100 mosfet driver love waves and graphs with color :) )Rise time comparison boxing....fight!Fairchild Figure 33Microchip Figure 2-2Hey!...Looks like I'll get the same switching performance when drivinga mosfet with Ciss= 710pf and total gate charge = 23nC.Am I missing something here? I assumed the Microchip part with it's 9Aspec (top of the page) would have superior rise time.(Assuming due to less internal resistance.)It's a draw?D from BCmyrealaddress(at)comic(dot)comBC, CanadaPosted to usenet