VS-VSKCS400 Datasheet, PDF (4/7 Pages) Vishay Siliconix – High frequency operation

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160
Square wave (D = 0.50)
140
80 % rated V_R applied
120
100
80
DC
60
40
20 see note (1)
0
0
100
200
300
400
500
I_F(AV) - Average Forward Current (A)
Fig. 5 - Maximum Allowable Case Temperature vs.
Average Forward Current
VS-VSKCS400/045
Vishay Semiconductors
250
200
D = 0.75
D = 0.50
150 ^{D = 0.33}
D = 0.25
D = 0.20
100
RMS limit
50
DC
0
0
50 100 150 200 250 300
I_F(AV) - Average Forward Current (A)
Fig. 6 - Forward Power Loss Characteristics
100 000
At Any Rated Load Condition
And With Rated V_RRM Applied
Following Surge
10 000
1000
10
100
1000
10 000
t_p - Square Wave Pulse Duration (μs)
Fig. 7 - Maximum Non-Repetitive Surge Current
D.U.T.
Current
monitor
L
IRFP460
R_g = 25 Ω
High-speed
switch
Freewheel
diode
+ ^{Vd = 25 V}
40HFL40S02
Fig. 8 - Unclamped Inductive Test Circuit
Note
(1) _{Formula used: TC = TJ - (Pd + PdREV) x RthJC;ï€} 
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
Revision: 28-Sep-15
4
Document Number: 94634
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