AO4706
Gate Charge Test Circuit &Waveform
Vgs
Qg
10V
+
20A
VDC
+
Qgs
Qgd
Vds
VDC
-
10A
5A
-
DUT
Vgs
Vds
Ig
Charge
Resistive Switching Test Circuit& Waveforms
RL
Vds
90%
+
125ºC
125ºC
Vdd
DUT
di/dt=1000A/us
Vgs
VDC
Rg
-
10%
25ºC
trr
25ºC
Vgs
Vgs
t d(on)
t
r
t d(off)
t
f
125ºC
25ºC
Qrr
Irm
t on
25ºC
toff
S
125ºC
Unclamped Inductive Switching (UIS) Test Circuit & Waveforms
L
2
EAR=1/2LI
AR
BVDSS
Vds
Id
Vds
+
Vgs
Vdd
IAR
Is=20A
Vgs
VDC
Id
125ºC
25ºC
Rg
-
Is=20A
125ºC
25ºC
DUT
Vgs
Vgs
125º
Qrr
Irm
Diode RecoveryTest Circuit &Waveforms
25ºC
25ºC
Qrr =- Idt
Vds +
Vds -
Ig
125ºC
DUT
Vgs
trr
L
Isd
IF
Isd
dI/dt
+
IRM
Vdd
Vgs
VDC
Vdd
-
Vds
Alpha & Omega Semiconductor, Ltd.
www.aosmd.com
AOS [ ALPHA & OMEGA SEMICONDUCTORS ]
