40L40CW Datasheet, PDF (4/6 Pages) International Rectifier – SCHOTTKY RECTIFIER

40L40CW/40L45CW
Vishay High Power Products ^{Schottky Rectifier, 2 x 20 A}
150
140
DC
130
120
Square wave (D = 0.50)
80 % rated V_R applied
110
See note (1)
100
0
5
10 15
20
25
30
I_F(AV) - Average Forward Current (A)
Fig. 5 - Maximum Allowable Case Temperature vs.
Average Forward Current (Per Leg)
18
D = 0.20
16
D = 0.25
14
D = 0.33
D = 0.50
12
D = 0.75
10
RMS limit
8
6
DC
4
2
0
0
5
10
15
20
25
30
I_F(AV) - Average Forward Current (A)
Fig. 6 - Forward Power Loss Characteristics
(Per Leg)
10 000
At any rated load conditon
and with rated V_RRM applied
following surge
1000
100
10
100
1000
10 000
t_p - Square Wave Pulse Duration (µs)
Fig. 7 - Maximum Non-Repetitive Surge Current (Per Leg)
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: 93344
Revision: 21-Aug-08