User`s manual

58 AWS-8259 User's Manual

B.2 -48 V

Power Supply

The following specifications describe the physical and electri-cal char-

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

housed in a standard size PS/2 casing.

Specifications

Input voltage: -38 ~ -58 Vdc (continuous operation)

-48 Vdc (normal operation)

Input current: 10 A max. @ -48 Vdc input

Inrush current: 5 A max. @ -48 Vdc input

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

Output characteristics:

Table B-6: -48Vdc power supply output characteristics

Note 1: Total regulation tolerance includes temperature change, war-

mup drift and dynamic load.

Note 2: Ripple and noise were measured differentially at the power sup-

ply using loads that were each shunted by at least a 0.1 µF

ceramic disc capacitor and a 10 µF electrolytic capacitor, each

capacitor having a band width up to 20 MHz.

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