IRF640NPbF/SPbF/LPbF
E
AS
, Single Pulse Avalanche Energy (mJ)
600
15V
500
VDS
L
DRIVER
ID
TOP
4.4A
7.6A
BOTTOM 11A
400
RG
20V
D.U.T
IAS
tp
+
- VDD
A
300
0.01
Ω
Fig 12a.
Unclamped Inductive Test Circuit
V
(BR)DSS
tp
200
100
0
25
Starting T
J
, Junction Temperature (
°
C)
50
75
100
125
150
175
Fig 12c.
Maximum Avalanche Energy
Vs. Drain Current
I
AS
Fig 12b.
Unclamped Inductive Waveforms
Current Regulator
Same Type as D.U.T.
50KΩ
Q
G
12V
.2µF
.3µF
10 V
Q
GS
V
G
Q
GD
V
GS
3mA
D.U.T.
+
V
-
DS
Charge
I
G
I
D
Current Sampling Resistors
Fig 13a.
Basic Gate Charge Waveform
Fig 13b.
Gate Charge Test Circuit
www.irf.com
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