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
CD5.121
CD-Series
DC/DC Converter 12V, 8A
7. EFFICIENCY AND POWER LOSSES
Input 24Vdc
Efficiency typ. 88.2% at 12V, 8A
Power losses typ. 0.6W at no output load
typ. 6.4W at 12V, 4A
typ. 12.8W at 12V, 8A
typ. 16.8W at 12V, 9.6A
Fig. 7-1 Efficiency vs. output current at 12V
output and 24Vdc input voltage, typ.
Fig. 7-2 Losses vs. output current at 12V
output and 24Vdc input voltage, typ.
Efficiency
1
85
87
89
84
90%
8
A
245
Output Current
3
86
88
67
Power Losses
012 4 5 8
A
0
3
9
15
18W
6
3
12
Output Current
67
Fig. 7-3 Efficiency vs. input voltage at 12V,
8A, typ.
Fig. 7-4 Losses vs. input voltage at 12V, 8A,
typ.
Efficiency
18 20 22 26 28 32Vd
c
89%
86.5
87.5
88.5
88.0
87.0
86.0
24 30
Input Voltage
Power Losses
0
4
8
12
16
20
24W
18 20 24 26 28 32Vd
c
22 30
Input Voltage
Mar. 2016 / Rev. 1.5 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
8/22