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FDP8870_08 Datasheet, PDF (6/10 Pages) Fairchild Semiconductor – N-Channel PowerTrench® MOSFET
Test Circuits and Waveforms
VARY tP TO OBTAIN
REQUIRED PEAK IAS
RG
VGS
tP
0V
VDS
L
DUT
+
VDD
-
IAS
0.01Ω
Figure 15. Unclamped Energy Test Circuit
tP
IAS
BVDSS
VDS
VDD
0
tAV
Figure 16. Unclamped Energy Waveforms
VGS
Ig(REF)
VDS
L
DUT
+
VDD
-
Figure 17. Gate Charge Test Circuit
VDD
Qgs2
VDS
Qg(TOT)
Qg(5)
VGS
VGS = 10V
VGS = 5V
VGS = 1V
0
Qg(TH)
Qgs
Ig(REF)
0
Qgd
Figure 18. Gate Charge Waveforms
VDS
RL
VGS
RGS
DUT
+
VDD
-
VGS
Figure 19. Switching Time Test Circuit
VDS
tON
td(ON)
tr
90%
tOFF
td(OFF)
tf
90%
10%
0
10%
VGS
10%
0
50%
PULSE WIDTH
90%
50%
Figure 20. Switching Time Waveforms
©2008 Fairchild Semiconductor Corporation
FDP8870 Rev. A3