VS-8ETX06S-M3, VS-8ETX06-1-M3
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Vishay Semiconductors
50
40
30
20
10
300
VR = 390 V
TJ = 125 °C
TJ = 25 °C
250
IF = 16 A
IF = 8 A
IF = 16 A
200
VR = 390 V
TJ = 125 °C
TJ = 25 °C
IF = 8 A
150
100
50
IF = 16 A
IF = 16 A
IF = 8 A
IF = 8 A
0
100
100
1000
1000
dIF/dt (A/µs)
Fig. 7 - Typical Reverse Recovery Time vs. dIF/dt
dIF/dt (A/µs)
Fig. 8 - Typical Stored Charge vs. dIF/dt
Note
(1)
Formula used: TC = TJ - (Pd + PdREV) x RthJC;
Pd = forward power loss = IF(AV) x VFM at (IF(AV)/D) (see fig. 6);
PdREV = inverse power loss = VR1 x IR (1 - D); IR at VR1 = rated VR
(3)
trr
IF
ta
tb
0
(4)
Qrr
(2)
IRRM
0.5 IRRM
(5)
di(rec)M/dt
0.75 IRRM
diF/dt
(1)
(4) Qrr - area under curve defined by trr
(1) diF/dt - rate of change of current
and IRRM
through zero crossing
trr x IRRM
(2) IRRM - peak reverse recovery current
Qrr
=
2
(3) trr - reverse recovery time measured
from zero crossing point of negative
going IF to point where a line passing
through 0.75 IRRM and 0.50 IRRM
extrapolated to zero current.
(5) di(rec)M/dt - peak rate of change of
current during tb portion of trr
Fig. 9 - Reverse Recovery Waveform and Definitions
Revision: 25-Oct-17
Document Number: 96242
4
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