IRFP450N, SiHFP450N
Vishay Siliconix
15 V
VDS
L
Driver
RG
20 V
tp
D.U.T.
IAS
0.01 Ω
+
- VDAD A
Fig. 12a - Unclamped Inductive Test Circuit
VDS
tp
IAS
Fig. 12b - Unclamped Inductive Waveforms
300
ID
TOP
6.3A
250
8.9A
BOTTOM 14A
200
150
100
50
0
25
50
75
100
125
150
Starting TJ , Junction Temperature ( °C)
Fig. 12c - Maximum Avalanche Energy vs. Drain Current
VGS
QGS
VG
QG
QGD
Charge
Fig. 13a - Basic Gate Charge Waveform
Current regulator
Same type as D.U.T.
12 V
50 kΩ
0.2 µF
0.3 µF
+
D.U.T. - VDS
VGS
3 mA
IG
ID
Current sampling resistors
Fig. 13b - Gate Charge Test Circuit
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Document Number: 91232
S-Pending-Rev. b, 26-Jun-08