FQB4N90 FAIRCHILD [Fairchild Semiconductor], FQB4N90 Datasheet - Page 6

• Manufacturer Part Number: FQB4N90
• Description: 900V N-Channel MOSFET
• Manufacturer: FAIRCHILD [Fairchild Semiconductor]

©2001 Fairchild Semiconductor Corporation
( Driver )
( Driver )
( DUT )
( DUT )
( DUT )
( DUT )
V
V
V
V
I
I
GS
GS
S
S
DS
DS
V
V
GS
GS
Peak Diode Recovery dv/dt Test Circuit & Waveforms
R
R
G
G
DUT
DUT
Driver
Driver
I
I
FM
FM
I
I
I
S
S
S
D =
D =
D =
, Body Diode Forward Current
, Body Diode Forward Current
Forward Voltage Drop
Forward Voltage Drop
--------------------------
--------------------------
--------------------------
Gate Pulse Period
Gate Pulse Period
Gate Pulse Period
Gate Pulse Width
Gate Pulse Width
Gate Pulse Width
Same Type
Same Type
Body Diode
Body Diode
as DUT
as DUT
Body Diode Recovery dv/dt
Body Diode Recovery dv/dt
V
V
• dv/dt controlled by R
• dv/dt controlled by R
• I
• I
+
+
DS
DS
_
_
S
S
V
V
controlled by pulse period
controlled by pulse period
Body Diode Reverse Current
Body Diode Reverse Current
f
f
I
I
RM
RM
L
L L
G
G
di/dt
di/dt
V
V
DD
DD
V
V
10V
10V
DD
DD
Rev. B, October 2001