70CRU04 Datasheet, PDF (4/6 Pages) International Rectifier – Ultrafast Rectifier

70CRU04
Bulletin PD-20637 12/01
180
170
160
150
DC
140
130
Square wave (D = 0.50)
120 Rated Vr applied
110 _{see note (3)}
100
0 5 10 15 20 25 30 35 40
Average Forward Current - I _F(AV) (A)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current
150
If = 35A
140
Vrr = 200V
130
120
Tj = 125˚C
110
100
90
80 Tj = 25˚C
70
60
50
100
1000
di _F /dt (A/µs )
Fig. 7 - Typical Reverse Recovery vs. di _F /dt
40
35
RMS Limit
30
25
20
D = 0.01
D = 0.02
15
D = 0.05
D = 0.10
10
D = 0.20
5
D = 0.50
DC
0
0 5 10 15 20 25 30 35
Average Forward Current - I _F(AV) (A)
Fig. 6 - Forward Power Loss Characteristics
2500
2000
If = 35A
Vrr = 200V
1500
Tj = 125˚C
1000
500
Tj = 25˚C
0
100
1000
di _F /dt (A/µs )
Fig. 8 - Typical Stored Charge vs. di _F /dt
(3) Formula used: T_C = T_J - (Pd + Pd_REV) x R_thJC ;
Pd = Forward Power Loss = I_F(AV) x V_FM @ (I_F(AV) / D) (see Fig. 6);
Pd_REV = Inverse Power Loss = V_R1 x I_R (1 - D); I_R @ V_R1= rated V_R
4
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