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CD5.242 Arkusz danych(PDF) 5 Page - PULS GmbH

Numer części CD5.242
Szczegółowy opis  DC/DC Converter
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Producent  PULS [PULS GmbH]
Strona internetowa  http://www.pulspower.com/
Logo PULS - PULS GmbH

CD5.242 Arkusz danych(HTML) 5 Page - PULS GmbH

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CD5.242
CD-Series
DC/DC Converter 24V, 5A
4. SOFT-START AND INPUT INRUSH CURRENT SURGE
Inrush current limitation
An active inrush limitation circuit (inrush limiting resistor which is bypassed by a relay contact) limits the input inrush
current after turn-on of the input voltage.
The charging current into EMI suppression capacitors is disregarded in the first microseconds after switch-on.
Inrush current
max.
0.8Apeak
-25°C to +70°C, input: 48Vdc
typ.
0.6Apeak
-25°C to +70°C, input: 48Vdc
Inrush energy
typ.
negligible
-25°C to +70°C, input: 48Vdc
Fig. 4-1 Input inrush current, typical behavior
Input Current
Input Voltage
Output Voltage
Input:
48Vdc
Output:
24V, 5A, constant current load
Ambient:
25°C
Upper curve:
Input current 1A / DIV
Middle curve:
Input voltage 50V / DIV
Lower curve:
Output voltage 20V / DIV
Time basis:
100ms / DIV
Soft-start function:
After the DC/DC converter is turned on, the internal output current rises slowly to its nominal value. This method
charges the output capacitors (internal and external capacitors) slowly and avoids high input currents during turn-on.
High input currents can produce a high voltage drop on the input wiring (especially with long and thin cables) which
reduces the terminal voltage on the DC/DC converter. If the terminal voltage is below the shut-down voltage, the
DC/DC converter will turn-off and will make a new start-up attempt. This effect is avoided with the integrated soft-
start function. Please note that this function increases the rise time of the output voltage by a small amount.
Fig. 4-2 Soft-start behavior
Input Current
Input:
48Vdc
Output:
24V, 5A, constant current load
Ambient:
25°C
No additional external output capacitors
Upper curve:
Input current 2A / DIV
Lower curve:
Output voltage 10V / DIV
Time basis:
20ms / DIV
Output Voltage
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
5/22


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