70CRU02 Datasheet, PDF (5/6 Pages) International Rectifier – Ultrafast Rectifier

70CRU02
Bulletin PD-20619 rev. B 02/02
V_R = 200V
L = 70µH
0.01 Ω
D.U.T.
dif/dt
ADJUST _G
D
IRFP250
S
Fig. 9 - Reverse Recovery Parameter Test
Circuit
IF
0
3
trr
ta
t_b
1 _{dif /dt}
2 _{I RRM}
Q_rr ⁴
0.5 I _RRM
di(rec)M/dt 5
0.75 I_RRM
1. diF/dt - Rate of change of current through
zero crossing
2. IRRM - Peak reverse recovery current
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
4. Qrr - Area under curve defined by
t rr and IRRM
Q
rr =
t rr x I
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
Outline Table
Dimensions in inches (and milimetres)
www.irf.com
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