User manual

CD5.121
CD–Series
DC/DC Converter; 12V, 8A
Jan. 08 / Rev. 1.1 DS-CD5.121-EN / All parameters are specified at 12V, 8A and 24Vdc input at 25°C ambient unless otherwise noted.
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25.13. MOUNTING ORIENTATIONS
Mounting orientations other than input terminals on the bottom and output on the top requires a reduction in
continuous output power or a limitation in the maximum allowed ambient temperature. The amount of reduction
influences the lifetime expectancy of the DC/DC converter. Therefore, two different derating curves for continuous
operation can be found below:
Curve A1 Recommended output current.
Curve A2 Max allowed output current (results approx. in half the lifetime expectancy of A1).
Fig. 25-10
Mounting
Orientation A
Standard
Orientation
DC/DC
Converter
OUTPUT
INPUT
Output Current
0
10 20 30 40
60°
C
2
6
8
10A
50
Ambient Temperature
4
A
1
Fig. 25-11
Mounting
Orientation B
(Upside down)
DC/DC
Converter
OUTPUT
INPUT
Output Current
0
10 20 30 40
60°
C
2
6
8
10A
50
Ambient Temperature
4
A
2
A
1
Fig. 25-12
Mounting
Orientation C
(Table-top
mounting)
Output Current
0
10 20 30 40
60°
C
2
6
8
10A
50
Ambient Temperature
4
A
1
A
2
Fig. 25-13
Mounting
Orientation D
(Horizontal cw)
DC/DC
Converter
OUTPUT
INPUT
Output Current
0
10 20 30 40
60°
C
2
6
8
10A
50
Ambient Temperature
4
A
1
A
2
Fig. 25-14
Mounting
Orientation E
(Horizontal ccw)
DC/DC
Converter
OUTPUT
INPUT
Output Current
0
10 20 30 40
60°
C
2
6
8
10A
50
Ambient Temperature
4
A
1
A
2