Advantech AWS-8248 Manuel d'utilisateur télécharger pdf (Page 35)

29 Appendix B

B.2 -48 V

power supply

The following specifications describe the physical and electrical charac-

teristics of a 310 W, four output, DC to DC switching power supply

housed in a standard size PS/2 casing.

B.2.1 Specifications

Input voltage: 36~72V (continuous operation)

-48 VDC (normal operation)

Input current: 10 A max. @ -48 V

input

Inrush current: 5 A max. @ -48 V

input

Efficiency: 70% min. @ full load and normal line voltage

Output characteristics:

Table B.1: -48 V

power supply output characteristics

Output

voltage

Max Load Total Max. Output

+3.3V 25A(Max. 150W)

250W

+5V 30A(Max. 150W)

+12V 12A

-5V .5A

-12V 1A

+5V sb 1A

Note 1: Total regulation tolerance includes temperature

change, warmup drift and dynamic load.

Note 2: Ripple and noise were measured differentially

at the power supply using loads that were each

shunted by at least a 0.1 m F ceramic disc

capacitor and a 10 m F electrolytic capacitor,

each capacitor having a bandwidth up to 20

MHz.

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Advantech AWS-8248 Manuel d'utilisateur Page 35