HFA08PB120S Просмотр технического описания (PDF) - International Rectifier

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HFA08PB120S

Ultrafast, Soft Recovery Diode

International Rectifier 

HFA08PB120

REVERSE RECOVERY CIRCUIT

VR = 200V

L = 70µH

0.01 Ω

D.U.T.

dif/dt

ADJUST G

D

IRFP250

S

IF

0

3

trr

ta

tb

2

I RRM

4

Qrr

0.5 I RRM

di(rec)M/dt 5

0.75 I RRM

1 dif /dt

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 trr

and IRRM

t rr X IRRM

Qrr =

2

5. di(rec)M/dt - Peak rate of change of

current during tb portion of trr

Fig. 9 - Reverse Recovery Parameter Test

Circuit

Fig. 10 - Reverse Recovery Waveform and

Definitions

DUT

CURRENT

MONITOR

L = 100µH

Rg = 25 ohm

HIGH-SPEED

SW ITCH

FR EE-W HEEL

DIODE

+

Vd = 50V

I L(PK)

V (AVAL)

V R(RATED)

DE CAY

TIME

Fig. 11 - Avalanche Test Circuit and Waveforms

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