FIGURE 3. trr, ta
AND t
b
CURVES vs FORW
ARD CURRENT
FIGURE 4.
CURRENT DERATING CURVE
Typical Performance Curves
(Continued)
200
trr
ta
tb
175
150
100
75
50
25
0
0
1108025 50 75 100 125 150 175
125
t, TIME (ns)
IF, FORWARD CURRENT (A)
DC
SQ. WAVE
100
80
60
40
20
TC, CASE TEMPERATURE (oC)
I
F(AV)
, AVERAGE FORWARD CURRENT (A)
Test Circuits and Waveforms
FIGURE 5. trr
TEST CIRCUIT
FIGURE 6. trr
WA
VEFORMS AND DEFINITIONS
FIGURE 7.
AVALANCHE ENERGY TEST CIRCUIT
FIGURE 8. AVALANCHE CURRENT AND VOLTAGE
WAVEFORMS
RG
L
-VDD
IGBT
CURRENT
SENSE
DUT
VGE
t1
t2
VGE
AMPLITUDE AND
t1 AND t2 CONTROL IF
RG
CONTROL dI
F/dt
+
dt
dIF
IF
trr
ta
tb
0
IRM
0.25 IRM
DUT
CURRENT
SENSE
+
LR
VDD
R < 0.1?
EAVL = 1/2LI2
[V
R(AVL)/(VR(AVL)
- V
DD)]
Q1 = IGBT (BVCES
> DUT V
R(AVL))
-
VDD
Q1
I = 1.6A
L = 40mH
IV
t0
t1
t2
IL
VAVL
t
IL
RURG80100
?2001
Fairchild Semiconductor Corporation
RURG80100 Rev. C1
www.fairchildsemi.com
3
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