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IRFR9220, IRFU9220
Test Circuits and Waveforms (Continued)
CURRENT
REGULATOR
-VDS
(ISOLATED
SUPPLY)
12V
BATTERY
0.2µF 50kΩ
0.3µF
DUT
D
G
DUT
0
Ig(REF)
S
+VDS
IG CURRENT
SAMPLING
ID CURRENT
SAMPLING
RESISTOR
RESISTOR
0
Qgs
VDD
0
Ig(REF)
VDS
Qgd
Qg(TOT)
VGS
FIGURE 18. GATE CHARGE TEST CIRCUIT
FIGURE 19. GATE CHARGE WAVEFORMS
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