CPS20.481-D1 Datasheet, PDF (8/26 Pages) PULS GmbH – DC/DC CONVERTER

C-Series
CPS20.481-D1
48V, 10A, DC/DC CONVERTER
7. HOLD-UP TIME
The internal capacitor, which supplies the energy for the hold-up time is isolated by a diode to the input voltage. A
short on the input line does not discharge the internal hold-up capacitor.
Hold-up Time
typ.
min.
typ.
min.
DC 110V
65ms
54ms
26ms
21ms
DC 300V
65ms
54ms
26ms
21ms
at 48V, 5A, see Fig. 7-1
at 48V, 5A, see Fig. 7-1
at 48V, 10A, see Fig. 7-1
at 48V, 10A, see Fig. 7-1
Fig. 7-1 Hold-up time vs. input voltage
Hold-up Time
80ms
70
60
50
40
30
20
10
0
120 180
48V, 5A, typ.
48V, 5A, min.
48V, 10A, typ.
48V, 10A, min.
Input Voltage
240 300 360Vdc
Fig. 7-2 Shut-down behavior, definitions
Input
Voltage
Output
Voltage
Hold-up Time
- 5%
8. DC-OK RELAY CONTACT
This feature monitors the output voltage, which is produced by the DC/DC converter itself. It is independent of a back-
fed voltage from a unit connected in parallel to the DC/DC converter output.
Contact closes
Contact opens
Contact ratings
Isolation voltage
As soon as the output voltage reaches 90% of the adjusted output voltage level.
As soon as the output voltage dips more than 10% below the adjusted output voltage.
Short dips will be extended to a signal length of 100ms. Dips shorter than 1ms will be ignored.
max. 60Vdc 0.3A, 30Vdc 1A, 30Vac 0.5A resistive load
min. 1mA at 5Vdc
min. permissible load
See dielectric strength table in section 18.
Fig. 8-1 DC-ok relay contact behavior
V_OUT = V_ADJ
10%
0.9* V_ADJ
<
>
1ms
1ms
100ms
open
closed
open
closed
Apr. 2014 / Rev. 1.3 DS-CPS20.481-D1-EN
All parameters are specified at 48V, 10A, 300Vdc, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany
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