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參數(shù)資料
| 型號： | S1242 |
| 元件分類： | 整流器 |
| 英文描述： | 321 A, SILICON, RECTIFIER DIODE, TO-244 |
| 封裝： | TO-244, 2 PIN |
| 文件頁數(shù)： | 5/6頁 |
| 文件大小： | 211K |
| 代理商： | S1242 |
Bulletin PD-20017 02/01
5
S1242
www.irf.com
Fig. 10 - Reverse Recovery Waveform and Definitions
IRFP250
D.U.T.
L = 70H
V = 200V
R
0.01
G
D
S
dif/dt
ADJUST
ta
tb
trr
Qrr
IF
I RRM
0.5
di(rec)M/dt
0.75 IRRM
5
4
3
2
0
1
di /dt
f
Fig. 9- Reverse Recovery Parameter Test Circuit
Reverse Recovery Circuit
di F /dt
di F /dt
4. Qrr - Area under curve defined by t rr
and IRRM
5. di (rec) M / dt - Peak rate of change of
current during t b portion of t rr
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
Q rr =
t rr x I RRM
2
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