V23990-P543-*3* -PM
Input Rectifier Bridge
Figure 1
Rectifier diode
Figure 2
Rectifier diode
Typical diode forward current as
a function of forward voltage
IF= f(VF)
Diode transient thermal impedance
as a function of pulse width
ZthJH = f(tp)
101
100
10-1
10-2
100
80
60
40
D = 0,5
0,2
0,1
0,05
0,02
0,01
0,005
0.000
20
Tj = Tjmax-25°C
Tj = 25°C
0
0,0
0,5
1,0
1,5
2,0
VF (V)
t p (s)
10-5
10-4
10-3
10-2
10-1
100
1011
At
At
tp =
tp / T
1,89
250
ꢁs
D =
RthJH
=
K/W
Figure 3
Power dissipation as a
Rectifier diode
Figure 4
Forward current as a
Rectifier diode
function of heatsink temperature
function of heatsink temperature
Ptot = f(Th)
IF = f(Th)
100
80
60
40
20
0
60
50
40
30
20
10
0
o C)
T h (
o C)
0
50
100
150
200
T h
(
0
50
100
150
200
At
At
Tj =
Tj =
150
ºC
150
ºC
copyright Vincotech
17
Revision: 4
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