ARF322 FAST RECOVERY DIODE
ANSALDO
FINAL SPECIFICATION ott 97 - ISSUE : 04
SWITCHING CHARACTERISTICS
FORWARD RECOVERY VOLTAGE
10.00
9.00
8.00
7.00
6.00
5.00
4.00
3.00
2.00
1.00
0.00
Tj = 125 °C
IF
VFR
VF
0
50
100
150
200
250
300
350
di/dt [A/µs]
REVERSE RECOVERY CHARGE
Tj = 125 °C
REVERSE RECOVERY CURRENT
Tj = 125 °C
180
160
140
120
100
80
250
200
150
100
50
1000 A
500 A
250 A
1000 A
500 A
250 A
60
40
20
0
0
0
100
200
300
400
0
100
200
300
400
di/dt [A/µs]
di/dt [A/µs]
IF
d i/d t
ta
ta = Irr / (di/dt)
Softness (s factor) s = tb / ta
Energy dissipation during recovery Er = Vr · (Qrr - Irr ·ta / 2 )
tb = trr - ta
tb
Irr
Vr
POSEICO [ POWER SEMICONDUCTORS ]
