IRF840B Datasheet, PDF (7/10 Pages) Fairchild Semiconductor – 500V N-Channel MOSFET

Peak Diode Recovery dv/dt Test Circuit & Waveforms
DUT
+
V_DS
_
I _SD
L
Driver
R_G
Same Type
as DUT
V_DD
V_GS
• dv/dt controlled by R_G
• I_SD controlled by pulse period
V_GS
( Driver )
I _SD
( DUT )
V_DS
( DUT )
D
=
--G--a--t-e--P--u--l-s-e---W---i-d-t-h--
Gate Pulse Period
10V
I_FM , Body Diode Forward Current
di/dt
I_RM
Body Diode Reverse Current
Body Diode Recovery dv/dt
V_SD
V_DD
Body Diode
Forward Voltage Drop
©2001 Fairchild Semiconductor Corporation
Rev. A, November 2001