Test Circuits and Waveforms
HUF76121SK8
VARY tP TO OBTAIN
REQUIRED PEAK IAS
RG
VGS
tP
0V
VDS
L
DUT
+
VDD
-
IAS
0.01Ω
FIGURE 17. UNCLAMPED ENERGY TEST CIRCUIT
tP
IAS
BVDSS
VDS
VDD
0
tAV
FIGURE 18. UNCLAMPED ENERGY WAVEFORMS
VGS
Ig(REF)
VDS
RL
DUT
+
VDD
-
FIGURE 19. GATE CHARGE TEST CIRCUIT
VDD
VDS
Qg(TOT)
VGS
VGS = 1V
0
Qg(TH)
Qgs
Ig(REF)
0
Qg(5)
Qgd
VGS = 5V
VGS = 10V
FIGURE 20. GATE CHARGE WAVEFORMS
VDS
RL
VGS
VGS
RGS
DUT
+
VDD
-
FIGURE 21. SWITCHING TIME TEST CIRCUIT
7
VDS
tON
td(ON)
tr
90%
tOFF
td(OFF)
tf
90%
10%
0
VGS
10%
0
50%
PULSE WIDTH
10%
90%
50%
FIGURE 22. SWITCHING TIME WAVEFORM