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Puls CD5.121 DC/DC Converter Specification Guide

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Page of 21
 
 
CD5.121
 
 
CD-Series 
DC/DC Converter 12V, 8A 
 
Oct 2009 / Rev. 1.3  DS-CD5.121-EN 
All parameters are specified at 12V, 8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. 
www.pulspower.com   Phone +49 89 9278 0    Germany 
22.12. M
OUNTING 
O
RIENTATIONS
 
Mounting orientations other than input terminals on the bottom and output on the top require a reduction in 
continuous output power or a limitation in the max. 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 in approximately half the lifetime expectancy of A1). 
 
Fig. 22-6 
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
A1
 
 
 
 
Fig. 22-7 
Mounting 
Orientation  B 
(Upside down) 
DC/DC
Conv
erter
OUTPU
T
INPUT
 
Output Current
0
10
20
30
40
60°C
2
6
8
10A
50
Ambient Temperature
4
A2
A1
 
 
 
 
Fig. 22-8 
Mounting 
Orientation  C  
(Table-top 
mounting) 
 
Output Current
0
10
20
30
40
60°C
2
6
8
10A
50
Ambient Temperature
4
A1
A2
 
 
 
 
Fig. 22-9 
Mounting 
Orientation  D  
(Horizontal cw) 
DC
/DC
onv
erter
OU
TPU
T
INPUT
 
Output Current
0
10
20
30
40
60°C
2
6
8
10A
50
Ambient Temperature
4
A1
A2
 
 
 
 
Fig. 22-10 
Mounting 
Orientation  E  
(Horizontal ccw) 
DC
/DC
onv
erter
OU
TPU
T
INPUT
 
Output Current
0
10
20
30
40
60°C
2
6
8
10A
50
Ambient Temperature
4
A1
A2
 
 
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