20CTH03 Datasheet, PDF (4/9 Pages) International Rectifier – Hyperfast Rectifier

20CTH03, 20CTH03S, 20CTH03-1, 20CTH03FP
Bulletin PD-20769 rev. A 08/03
10
D = 0.50
1 _{D = 0.20}
D = 0.10
D = 0.05
D = 0.02
D = 0.01
0.1
P_DM
t1
t2
Single Pulse
(Thermal Resistance)
Notes:
1. Duty factor D = t1/ t2
0.01
0.00001
0.0001
0.001
0.01
2. Peak Tj = Pdm x ZthJC + Tc
0.1
1
10
t1, Rectangular Pulse Duration (Seconds)
Fig. 5 - Max. Thermal Impedance Z _thJC Characteristics (FULLPACK)
180
180
170
170
DC
160
150
DC
160
140
Square wave (D = 0.50)
150 Rated Vr applied
130 Square wave (D = 0.50)
Rated Vr applied
120
see note (2)
140
0 2 4 6 8 10 12 14 16
Average Forward Current - I _F(AV) (A)
Fig. 6 - Max. Allowable Case Temperature
Vs. Average Forward Current
110 _{see note (2)}
100
0 2 4 6 8 10 12 14 16
Average Forward Current - I _F(AV) (A)
Fig. 7 - Max. Allowable Case Temperature
Vs. Average Forward Current (FULLPACK)
20
16
RMS Limit
12
8
D = 0.01
D = 0.02
D = 0.05
4
D = 0.1
DC
D = 0.2
D = 0.5
0
0 2 4 6 8 10 12 14 16
Average Forward Current - IF_(AV) (A)
Fig. 8 - Forward Power Loss Characteristics
4
(2) 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. 8);
Pd_REV = Inverse Power Loss = V_R1 x I_R (1 - D);
I_R @ V_R1 = rated V_R
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