AO4407A
Gate Charge Test Circuit & Waveform
Vgs
Qg
-
-10V
-
VDC
Qgs
Qgd
+
Vds
VDC
+
DUT
Vgs
Ig
Charge
Resistive Switching Test Circuit & Waveforms
RL
Vds
toff
ton
t
td(off)
td(on)
t
r
f
Vgs
-
90%
DUT
Vdd
Vgs
VDC
+
Rg
Vgs
10%
Vds
Unclamped Inductive Switching (UIS) Test Circuit & Waveforms
EAR= 1/2 LIA2R
L
Vds
Id
Vgs
Vds
-
BVDSS
Vgs
Vdd
VDC
+
Id
Rg
I AR
DUT
Vgs
Vgs
Diode Recovery Test Circuit & Waveforms
Q rr = - Idt
Vds +
Vds -
Ig
DUT
Vgs
trr
L
-Isd
-IF
Isd
Vgs
dI/dt
-IRM
+
Vdd
VDC
Vdd
-
-Vds
Alpha & Omega Semiconductor, Ltd.
www.aosmd.com