C&H Technology 182NQ030PbF - Manual (Page 5)

182NQ030PbF
Bulletin PD-21149 06/06
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current
FREE-WHEEL
DIODE
40HFL40S02
CURRENT
MONITOR
HIGH-SPEED
SWITCH
IRFP460
L
DUT
Rg = 25 ohm Vd = 25 Volt
+
Average Forward Current - I
F (AV)
(A)
Square Wave Pulse Duration - t
p
(microsec)
Fig. 7 - Max. Non-Repetitive Surge Current
Allowable Case Temperature (°C)
Non-Repetitive Surge Current - I
FSM
(A)
Fig. 6 - Forward Power Loss Characteristics
Average Forward Current - I
F (AV)
(A)
Average Power Loss (Watts)
Fig. 8 - Unclamped Inductive Test Circuit
(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. 6);
Pd
REV
= Inverse Power Loss = V
R1
x I
R
(1 - D); I
R
@ V
R1
= rated V
R
0 50 100 150 200 250 300 350
60
70
80
90
100
110
120
130
140
150
160
DC
Square wave (D=0.50)
80% rated Vr applied
see note (2)
0 50 100 150 200 250 300 350
0
20
40
60
80
100
120
140
160
180
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
RMS limit
DC
10 100 1000 10000
100
1000
10000
100000
Document Number: 94460 www.vishay.com
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