AO4924
Gate Charge Test Circuit & Waveform
Vgs
V
DS
=15V
I
D
=7.3A
Qg
10V
+
VD
C
-
DUT
Vgs
Ig
+
VDC
Vds
Qgs
Q
gd
-
C
rss
C
oss
Charge
Res istive Switching Test Circuit & Waveforms
R
L
Vds
Vds
Vgs
Rg
DU
T
100µs
+
VD
C
90%
Vdd
T
J(Max)
=150°C
T
A
=25°C
10%
-
Vgs
t
d(o
n)
t
r
t
on
t
d(o
ff)
t
off
t
f
Vgs
Unclamped Inductive Switching (UIS) Test Circuit & Waveforms
L
Vds
Id
Vgs
Rg
Vgs
VDC
E
AR
1/2 LI
=
Vds
2
AR
BV
DSS
+
Vdd
-
Id
I
AR
Vgs
In descending order
T
DU
D=0.5, 0.3, 0.1, 0.05, 0.02, 0.01, single pulse
Vgs
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
Vdd
Ig
Alpha & Omega Semiconductor, Ltd.