80EBU04 Datasheet, PDF (5/7 Pages) International Rectifier – Ultrafast Soft Recovery Diode

80EBU04
Bulletin PD-20742 rev. B 07/01
Reverse Recovery Circuit
V_R = 200V
L = 70µH
0.01 Ω
D.U.T.
d^diⁱfF/d^/t^dt
ADJUST _G
D
IRFP250
S
Fig. 9- Reverse Recovery Parameter Test Circuit
I_F
0
3
trr
t_a
t_b
1 _difF/d/d_tt
2 _{I RRM}
Q _rr ⁴
0.5 I _RRM
di(rec)M/dt ⁵
0.75 I_RRM
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. Qrr - Area under curve defined by t _rr
and I_RRM
Q
rr
=
t
rr
xI
2
RRM
5. di _{(rec) M} / dt - Peak rate of change of
current during t _b portion of t _rr
Fig. 10 - Reverse Recovery Waveform and Definitions
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