Gate Charge Test Circuit & Waveform
Vgs
Qg
10V
+
VD
C
-
DUT
Vgs
Ig
+
VDC
Vds
Qgs
Q
gd
-
Charge
Resistive Switching Test Circuit & Waveforms
R
L
Vds
Vds
Vgs
Rg
DU
T
+
VD
C
90%
Vdd
10%
Vgs
-
t
d(on)
t
r
t
on
t
d(off)
t
off
t
f
Vgs
Unclamped Inductive Switching (UIS) Test Circuit & Waveforms
L
Vds
Id
Vgs
Rg
DU
T
Vgs
Vgs
Vgs
Vds
E
AR
1/2 LI
=
2
AR
BV
DSS
+
VDC
Vdd
Id
I
AR
-
Diode Recovery Tes t Circuit & Waveforms
Vds +
DUT
Vgs
Q
rr
= - Idt
Vds -
Isd
Vgs
L
Isd
I
F
dI/dt
I
RM
t
rr
+
VD
C
Vdd
Vds
Ig
-
Vdd
Alpha & Omega Semiconductor, Ltd.
www.aosmd.com