15ETH03-1 データシートの表示（PDF） - International Rectifier

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15ETH03-1

Ultrafast Rectifier

International Rectifier 

15ETH03SPbF, 15ETH03-1PbF

Bulletin PD-21031 07/05

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

Qrr =

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. 10 - Reverse Recovery Waveform and Definitions

www.irf.com

5

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