Datasheet
Table Of Contents
- 1. Intended Use
- 2. Installation Requirements
- 3. Input Voltage
- 4. Soft-start and Input Inrush Current Surge
- 5. Output
- 6. Hold-up Time
- 7. Efficiency and Power Losses
- 8. Functional Diagram
- 9. Front Side and User Elements
- 10. Terminals and Wiring
- 11. Reliability
- 12. EMC
- 13. Environment
- 14. Protection Features
- 15. Safety Features
- 16. Dielectric Strength
- 17. Approvals
- 18. RoHS, REACH and Other Fulfilled Standards
- 19. Physical Dimensions and Weight
- 20. Accessories
- 21. Application Notes- 21.1. Peak Current Capability
- 21.2. Back-feeding Loads
- 21.3. Inductive and Capacitive Loads
- 21.4. Charging of Batteries
- 21.5. External Input Protection
- 21.6. Requirements for the Supplying Source
- Parallel Use to Increase Output Power
- 21.8. Parallel Use for Redundancy
- 21.9. Daisy Chaining of Outputs
- Series Operation
- 21.11. Use in a Tightly Sealed Enclosure
- 21.12. Mounting Orientations
 

CD5.242
CD-Series 
DC/DC Converter 24V, 5A 
3.  INPUT VOLTAGE 
Input voltage  nom.  DC 48V   
Input voltage range    36.0-60.0Vdc full specified 
    30.5-36.0Vdc  maximal 60 seconds or with de-rating see Fig. 3-2
 max. 63.0Vdc absolute maximum continuous input voltage with no 
damage to the DC/DC converter 
Allowed voltage between input 
and earth 
max. 60Vdc or 
42.2Vac 
in case the output voltage is not grounded. 
Allowed input ripple voltage 
max.  5Vpp  47Hz-500Hz, the momentary input voltage must always 
be within the specified limits. 
Turn-on voltage  typ.  34.5Vdc  steady-state value, see Fig. 3-1 
Shut-down voltage  typ.  30.5Vdc  steady-state value, see Fig. 3-1 
  typ.  63.5Vdc  steady-state value, see Fig. 3-1
Input current  typ.  2.75A  at 48Vdc input and output 24V, 5A, see Fig. 3-4
Start-up delay  typ.  670ms  see Fig. 3-3 
Rise time  typ.  80ms  0mF, 24V, constant current load 5A, see Fig. 3-3 
  typ.  150ms  5mF, 24V, constant current load 5A, see Fig. 3-3
Turn-on overshoot  max.  500mV  see Fig. 3-3
Input capacitance  typ.  800μF  external capacitors on the input voltage bus are allowed 
without any limitations. 
Fig. 3-1 Input voltage range 
Fig. 3-2 Allowable output current below 36V 
input voltage 
Turn-on
34.5Vdc
V
IN
P
OUT
Shut-down
60.0Vdc
30.5Vdc
36.0Vdc
Rated input range
63.5Vdc
0
1
2
3
4
6A
30 32 34 36 40Vdc
Input Voltage
Output Current
5
38
(
a
)
(
b
)
 (a) Ambient < 45°C
 (b) Ambient < 60°C
  Fig. 3-3 Turn-on behavior, definitions    Fig. 3-4 Input current vs. output load 
4/22
Start-up
delay
Rise
Time
Ov
6A
ershoot
- 5%
Output
Voltage
Input
Voltage
1
1.5 2 3
4
0
1
2
3
4A
5
Output Current
2.5
3.5
4.5
5.5
I
n
p
u
t
:
4
8
Vd
c
Input
Current,
typ.
I
n
p
u
t
:
3
6
V
d
c
Mar. 2016 / Rev. 1.5 DS-CD5.242-EN 
All parameters are specified at 24V, 5A, 48Vdc 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 










