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Puls CD5.121 DC/DC Converter Specification Guide

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CD5.121
 
 
CD-Series 
DC/DC Converter 12V, 8A 
 
 
5.  O
UTPUT
 
 
Output voltage 
nom. 
12V 
 
Adjustment range 
min. 
12-15V 
guaranteed 
 
max. 
16.1V 
at clockwise end position of potentiometer 
Factory setting 
 
12.0V  
 ±0.2%, at full load, cold unit 
Line regulation 
max. 
25mV 
Input voltage variations between 18 to 32.4Vdc 
Load regulation 
max. 
120mV 
static value, 0A Æ 8A 
Ripple and noise voltage 
max. 
75mVpp 
20Hz to 20MHz, 50Ohm 
Output current  
nom. 
9.6A 
at 12V, ambient < 45°C, see Fig. 5-1
 
nom. 
8A 
at 12V, ambient < 60°C, see Fig. 5-1
 
nom. 
7.7A 
at 15V, ambient < 45°C, see Fig. 5-1
 
nom. 
6.4A 
at 15V, ambient < 60°C, see Fig. 5-1
Output power 
nom. 
115W 
for ambient temperatures < 45°C 
 
nom. 
96W 
for ambient temperatures < 60°C 
Short-circuit current 
min. 
14A 
continuous current, short circuit impedance 150mOhm 
 max. 
18A 
continuous 
current, 
short circuit impedance 150mOhm 
Output capacitance 
typ. 
6 500μF 
 
 
 
Fig. 5-1   Output voltage vs. output current at 
24Vdc input voltage, typ. 
 
Fig. 5-2   Current limitation vs. input voltage, 
(11.5V constant voltage load), typ. 
 
Output Voltage
0
0
6
8
3
6
9
18V
12
15
18A
16
10
2
4
12 14
Adjustment
Range
Output Current
 
 
Output Current
9.8
15
21
27
10.0
10.2
11A
10.6
10.8
33Vdc
30
24
18
10.4
Input Voltage
 
 
 
Peak current capability (up to several milliseconds) 
The DC/DC converter can deliver a peak current, which is higher than the specified short term current. This helps to 
start current demanding loads or to safely operate subsequent circuit breakers. 
The extra current is supplied by the output capacitors inside the DC/DC converter. During this event, the capacitors will 
be discharged and causes a voltage dip on the output. Detailed curves can be found in chapter 22.1. 
Peak current voltage dips  
typ. 
from 12V to 8.3V 
at 16A for 50ms, resistive load 
 
typ. 
from 12V to 6.2V 
at 40A for 2ms, resistive load 
 
typ. 
from 12V to 4.3V 
at 40A for 5ms, resistive load 
 
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 
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