IRFR/U3706
1 5V
500
E
AS
, Single Pulse Avalanche Energy (mJ)
TOP
400
VDS
L
D R IV E R
BOTTOM
ID
12A
24A
28A
RG
20V
tp
D .U .T
IA
S
+
V
- DD
300
A
0 .0 1
Ω
200
Fig 12a.
Unclamped Inductive Test Circuit
100
V
(B R )D SS
tp
0
25
50
75
100
125
150
175
Starting T
J
, Junction Temperature (
°
C)
I
AS
Fig 12c.
Maximum Avalanche Energy
Vs. Drain Current
Fig 12b.
Unclamped Inductive Waveforms
Current Regulator
Same Type as D.U.T.
Q
G
50KΩ
12V
.2µF
.3µF
4.5 V
Q
GS
V
G
Q
GD
D.U.T.
V
GS
3mA
+
V
-
DS
Charge
I
G
I
D
Current Sampling Resistors
Fig 13a.
Basic Gate Charge Waveform
Fig 13b.
Gate Charge Test Circuit
6
www.kersemi.com