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| IRFP340 Datasheet, PDF (6/7 Pages) Intersil Corporation – 11A, 400V, 0.550 Ohm, N-Channel Power MOSFET | |||
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Test Circuits and Waveforms
IRFP340
VDS
L
VARY tP TO OBTAIN
REQUIRED PEAK IAS
RG
VGS
DUT
+
VDD
-
tP
0V
IAS
0
0.01â¦
tP
IAS
BVDSS
VDS
VDD
tAV
FIGURE 15. UNCLAMPED ENERGY TEST CIRCUIT
FIGURE 16. UNCLAMPED ENERGY WAVEFORMS
RL
+
RG
VDD
-
DUT
VGS
FIGURE 17. SWITCHING TIME TEST CIRCUIT
CURRENT
REGULATOR
12V
BATTERY
0.2µF 50kâ¦
0.3µF
VDS
(ISOLATED
SUPPLY)
SAME TYPE
AS DUT
D
G
DUT
Ig(REF)
0
S
VDS
IG CURRENT
SAMPLING
ID CURRENT
SAMPLING
RESISTOR
RESISTOR
FIGURE 19. GATE CHARGE TEST CIRCUIT
VDS
tON
td(ON)
tr
90%
tOFF
td(OFF)
tf
90%
10%
0
VGS
10%
0
50%
PULSE WIDTH
10%
90%
50%
FIGURE 18. RESISTIVE SWITCHING WAVEFORMS
VDD
Qgs
Qg(TOT)
Qgd
VGS
VDS
0
Ig(REF)
0
FIGURE 20. GATE CHARGE WAVEFORMS
4-334
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