UFB280FA40 Datasheet, PDF (4/8 Pages) Vishay Siliconix – Insulated Ultrafast Rectifier Module, 280 A

VS-UFB280FA40
Vishay Semiconductors ^{Insulated Ultrafast Rectifier Module, 280 A}
175
150
125
100
DC
75
Square wave (D = 0.50)
50 _{80 % rated VR applied}
25
See note (1)
0
0 40 80 120 160 200 240 280
I_F(AV) - Average Forward Current (A)
Fig. 5 - Maximum Allowable Case Temperature vs.
Average Forward Current (Per Leg)
250
225
200
175
RMS limit
150
125
100
D = 0.20
D = 0.25
75
D = 0.33
50
DC
D = 0.50
D = 0.75
25
0
0 25 50 75 100 125 150 175 200 225
I_F(AV) - Average Forward Current (A)
Fig. 6 - Forward Power Loss Characteristics (Per Leg)
250
V_R = 200 V
T_J = 125 °C
T_J = 25 °C
200
150
I_F = 150 A
I_F = 75 A
100
50
100
1000
dI_F/dt (A/µs)
Fig. 7 - Typical Reverse Recovery Time vs. dI_F/dt
5000
4500
4000
3500
3000
V_R = 200 V
T_J = 125 °C
T_J = 25 °C
I_F = 150 A
I_F = 75 A
2500
2000
1500
1000
500
0
100
1000
dI_F/dt (A/µs)
Fig. 8 - Typical Stored Charge vs. dI_F/dt
Note
(1) _{Formula used: TC = TJ - (Pd + PdREV) x RthJC;}
Pd = Forward power loss = I_F(AV) x V_FM at (I_F(AV)/D) (see fig. 6);
Pd_REV = Inverse power loss = V_R1 x I_R (1 - D); I_R at V_R1 = 80 % rated V_R
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4
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Document Number: 93458
Revision: 13-May-11
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000