Thermal impedance FAST DIODE MODULE
FINAL SPECIFICATION apr 17 - ISSUE : 2
SWITCHING CHARACTERISTICS
FORWARD RECOVERY VOLTAGE
40
35
30
25
20
15
10
5
Tj =125 °C
IF
Tj=25°C
VFR
VF
0
0
200
400
600
800 1000 1200
di/dt [A/µs]
REVERSE RECOVERY CHARGE
REVERSE RECOVERY CURRENT
Tj = 125 °C
Tj = 125 °C
350
300
250
200
150
100
50
300
500 A
250 A
250
200
150
100
50
500 A
250 A
0
0
50
100
150
200
250
0
0
50
100 150 200 250
di/dt [A/µs]
di/dt [A/µs]
IF
d i/d t
ta = Irr / (di/dt)
tb = trr - ta
Softness (s factor) s = tb / ta
Energy dissipation during recovery Er = Vr · (Qrr - Irr ·ta / 2
)
Irr
Vr
POSEICO [ POWER SEMICONDUCTORS ]
