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| RFM3N45 Datasheet, PDF (10/10 Pages) Intersil Corporation – 3A, 450V and 500V, 3 Ohm, N-Channel Power MOSFETs | |||
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RFM3N45, RFM3N50, RFP3N45, RFP3N50
Test Circuits and Waveforms
RL
+
RG
VDD
-
DUT
VGS
FIGURE 11. 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 13. 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 12. RESISTIVE SWITCHING WAVEFORMS
VDD
Qgs
Qg(TOT)
Qgd
VGS
VDS
0
IG(REF)
0
FIGURE 14. GATE CHARGE WAVEFORMS
5
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