AO4418
Gate Charge Test Circuit & Waveform
Vgs
Qg
10V
+
VDC
+
Qgs
Qgd
Vds
VDC
-
-
DUT
Vgs
Vds
Ig
Charge
Resistive Switching Test Circuit& Waveforms
RL
Vds
90%
10%
+
DUT
Vdd
Vgs
VDC
Rg
-
Vgs
Vgs
t d(on)
t
r
t d(off)
t
f
t on
toff
Unclamped Inductive Switching (UIS) Test Circuit & Waveforms
L
2
EAR= 1/2 LI
AR
BVDSS
Vds
Id
Vds
+
Vgs
Vdd
IAR
Vgs
VDC
Id
Rg
-
DUT
Vgs
Vgs
Diode RecoveryTest Circuit & Waveforms
Qrr = - Idt
Vds +
Vds -
Ig
DUT
Vgs
Isd
trr
L
IF
Isd
dI/dt
+
IRM
Vdd
Vgs
VDC
Vdd
-
Vds
Alpha & Omega Semiconductor, Ltd.
www.aosmd.com