20L15T Datasheet, PDF (4/6 Pages) International Rectifier – SCHOTTKY RECTIFIER

20L15T
Vishay High Power Products ^{Schottky Rectifier, 20 A}
100
95
90
Square wave (D = 0.50)
85
80
75
See note (1)
70
0
4
8
12
16
20
24
I_F(AV) - Average Forward Current (A)
Fig. 5 - Maximum Allowable Case Temperature vs.
Average Forward Current
1000
14
D = 0.20
12
D = 0.25
D = 0.33
D = 0.50
10
D = 0.75
8
6
RMS limit
4
DC
2
0
0
5
10
15
20
25
30
I_F(AV) - Average Forward Current (A)
Fig. 6 - Forward Power Loss Characteristics
100
10
At any rated load condition and
with rated V_RRM applied
following surge
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;}
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: 93277
Revision: 22-Aug-08