VS-8EWH06FN-M3 Datasheet, PDF (4/7 Pages) Vishay Siliconix – Hyperfast Rectifier, 8 A FRED Pt

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50
45
40
8 A, T_J = 125 °C
35
30
25
8 A, T_J = 25 °C
20
15
10
100
1000
dI_Fdt (A/μs)
Fig. 7 - Typical Reverse Recovery Time vs. dI_F/dt
Note
(1) _{Formula used: TC = TJ - (Pd + PdREV) x RthJC;ï€} 
Pd = forward power loss = I_F(AV) x V_FM at (I_F(AV)/D) (see fig. 6);
Pd_REV = inverse power loss = V_R1 x I_R (1 - D); I_R at V_R1 = rated V_R
VS-8EWH06FN-M3
Vishay Semiconductors
350
300
250
200
8 A, T_J = 125 °C
150
100
8 A, T_J = 25 °C
50
0
100
1000
dI_Fdt (A/μs)
Fig. 8 - Typical Stored Charge vs. dI_F/dt
I_F
0
(3)
t_rr
t_a
t_b
(2) _IRRM
(4)
Q_rr
0.5 I_RRM
dI_(rec)M/dt ⁽⁵⁾
(1) ^dIF^/dt
(1) dI_F/dt - rate of change of current
through zero crossing
(2) I_RRM - peak reverse recovery current
(3) t_rr - reverse recovery time measured
from zero crossing point of negative
going I_F to point where a line passing
through 0.75 I_RRM and 0.50 I_RRM
extrapolated to zero current.
0.75 I_RRM
(4) Q_rr - area under curve defined by t_rr
and I_RRM
Q_rr =
t_rr x I_RRM
2
(5) dI_(rec)M/dt - peak rate of change of
current during t_b portion of t_rr
Fig. 9 - Reverse Recovery Waveform and Definitions
Revision: 05-Oct-16
4
Document Number: 93238
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