HFA90NH40PBF Datasheet, PDF (5/7 Pages) Vishay Siliconix – HEXFRED® Ultrafast Soft Recovery Diode, 210 A

HFA90NH40PbF
HEXFRED^®
Vishay High Power Products
Ultrafast Soft Recovery Diode, 210 A
1
D = 0.50
0.33
0.1
0.25
0.17
0.08
0.01
SINGLE PULSE
( THERMAL RESPONSE )
0.001
1E-005
0.0001
0.001
0.01
0.1
1
10
t₁, Rectangular Pulse Duration (sec)
Fig. 9 - Maximum Thermal Impedance Z_thJC Characteristics (Per Leg)
V_R = 200 V
L = 70 µH
0.01 Ω
D.U.T.
dI_F/dt
adjust
G
D
IRFP250
S
Fig. 10 - Reverse Recovery Parameter Test Circuit
Document Number: 94044
Revision: 01-Aug-08
I_F
0
(3)
t_rr
t_a
t_b
(2) _IRRM
(4)
Q_rr
0.5 I_RRM
dI_(rec)M/dt ⁽⁵⁾
0.75 I_RRM
(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.
(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. 11 - Reverse Recovery Waveform and Definitions
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