30CPU04PBF 查看數據表（PDF） - International Rectifier

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30CPU04PBF

ULTRAFAST RECTIFIER

International Rectifier 

30CPU04PbF

Bulletin PD-20674 04/04

Reverse Recovery Circuit

VR = 200V

L = 70µH

0.01 Ω

D.U.T.

ddiifF/d/dt t

ADJUST G

D

IRFP250

S

Fig. 9- Reverse Recovery Parameter Test Circuit

IF

0

3

trr

ta

tb

1 difF/d/dtt

2 I RRM

Q rr 4

0.5 I RRM

di(rec)M/dt 5

0.75 IRRM

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

www.irf.com

5

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