= Instantaneous forward voltage (pw = 300µs, D = 2%).
I
R
= Instantaneous reverse current.
t
rr
= Reverse recovery time at dI
F
/dt = 100A/µs (See Figure 9), summation of t
a
+ t
b
.
t
a
= Time to reach peak reverse current at dI
F
/dt = 100A/µs (See Figure 9).
t
b
= Time from peak I
RM
to projected zero crossing of I
RM
based on a straight line from peak I
RM
through 25% of I
RM
(See Figure 9).
Q
RR
= Reverse recovery charge.
C
J
= Junction Capacitance.
R
θJC
= Thermal resistance junction to case.
pw = Pulse width.
D = Duty cycle.
I
F
= 8A, dI
F
/dt = 200A/µs
I
F
= 8A, dI
F
/dt = 200A/µs
I
F
= 8A, dI
F
/dt = 200A/µs
V
R
= 10V, I
F
= 0A
T
C
= 25
o
C, Unless Otherwise Specified.
TEST CONDITION
MIN
-
-
-
-
-
-
-
-
-
-
-
TYP
-
-
-
-
-
-
50
30
500
30
-
MAX
1.8
1.5
100
500
85
100
-
-
-
-
2.0
UNITS
V
V
µA
µA
ns
ns
ns
ns
nC
pF
o
C/W
Typical Performance Curves
40
I
R
, REVERSE CURRENT (µA)
200
175
o
C
I
F
, FORWARD CURRENT (A)
175
o
C
10
10
100
o
C
1
0.1
25
o
C
100
o
C
1
0.5
0
0.5
1
25
o
C
0.01
0.001
1.5
2
2.5
3
0
200
400
600
800
1000
V
F
, FORWARD VOLTAGE (V)
V
R
, REVERSE VOLTAGE (V)
FIGURE 1. FORWARD CURRENT vs FORWARD VOLTAGE
FIGURE 2. REVERSE CURRENT vs REVERSE VOLTAGE
2
MUR8100E, RURP8100
Typical Performance Curves
(Continued)
100
T
C
= 25
o
C, dI
F
/dt = 200A/µs
t, RECOVERY TIMES (ns)
t, RECOVERY TIMES (ns)
80
125
T
C
= 100
o
C, dI
F
/dt = 200A/µs
100
60
75
t
rr
40
t
rr
t
a
t
b
1
I
F
, FORWARD CURRENT (A)
4
8
50
t
a
20
25
t
b
0
0.5
1
I
F
, FORWARD CURRENT (A)
4
8
0
0.5
FIGURE 3. t
rr
, t
a
AND t
b
CURVES vs FORWARD CURRENT
FIGURE 4. t
rr
, t
a
AND t
b
CURVES vs FORWARD CURRENT
I
F(AV)
, AVERAGE FORWARD CURRENT (A)
150
T
C
= 175
o
C, dI
F
/dt = 200A/µs
t, RECOVERY TIMES (ns)
125
100
75
8
DC
6
SQ. WAVE
4
t
rr
t
a
50
25
0
0.5
1
I
F
, FORWARD CURRENT (A)
4
8
t
b
2
0
140
145
150
155
160
165
170
175
T
C
, CASE TEMPERATURE (
o
C)
FIGURE 5. t
rr
, t
a
AND t
b
CURVES vs FORWARD CURRENT
FIGURE 6. CURRENT DERATING CURVE
100
C
J
, JUNCTION CAPACITANCE (pF)
80
60
40
20
0
0
50
100
150
200
V
R
, REVERSE VOLTAGE (V)
FIGURE 7. JUNCTION CAPACITANCE vs REVERSE VOLTAGE
3
MUR8100E, RURP8100
Test Circuits and Waveforms
V
GE
AMPLITUDE AND
R
G
CONTROL dI
F
/dt
t
1 AND
t
2
CONTROL I
F
L
DUT
R
G
V
GE
t
1
t
2
CURRENT
SENSE
+
V
DD
0
I
F
dI
F
dt
ta
trr
tb
IGBT
-
0.25 I
RM
I
RM
FIGURE 8. t
rr
TEST CIRCUIT
I = 1A
L = 40mH
R < 0.1Ω
E
AVL
= 1/2LI
2
[V
R(AVL)
/(V
R(AVL)
- V
DD
)]
Q
1
= IGBT (BV
CES
> DUT V
R(AVL)
)
L
CURRENT
SENSE
Q
1
V
DD
DUT
R
+
V
DD
I V
FIGURE 9. t
rr
WAVEFORMS AND DEFINITIONS
V
AVL
I
L
I
L
-
t
0
t
1
t
2
t
FIGURE 10. AVALANCHE ENERGY TEST CIRCUIT
FIGURE 11. AVALANCHE CURRENT AND VOLTAGE
WAVEFORMS
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中风发生时，一切都是以秒来计算的。延误治疗可能导致大脑重大损伤。伦敦大学医学院的一位博士Alistair McEwan已经获得行为医学研究所(Action Medical Research)的同意，为急救人员开发一种无线诊断系统来减少时间延误。感谢抗血栓药物，一些病人在病情发作的三个小时之内可以完全恢复。但出血也会导致中风。医生在治疗之前需要确定发病原因，因为不适当的服用抗血栓药物会加重损害。...[详细]
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