rev.

page

date

DESCRIPTION: switching power supply

2 of 5

11/2010

20050

phone

phone 503.612.2300 fax

www.v-infinity.com

fax 503.612.2383

PART NUMBER: VF-D320-DXXXA-CFS

INPUT

parameter

conditions/description

min

nom

max

units

input frequency

47

63

Hz

input voltage

90-132 / 180-264 auto-selectable

90

264

VAC

Input current

At 100-120 VAC

8A

At 200-240 VAC

4A

inrush current

Peak measured at 230 VAC at full load, cold start

70

A

Peak measured at 115 VAC at full load, cold start

35

A

power factor

Passive power factor correction meets EN61000-3-2 class A

OUTPUT

parameter

conditions/description

min

nom

max

units

transient response

Output voltage returns to within 1% in less than

2.5 mS for a 50% load change. Peak transient does not exceed 5%.

overshoot

Turn-on and turn-off overshoot shall not exceed

5% over nominal voltage.

efficiency

Measured at 230 V and full load

75%

turn on delay

At 120 VAC

1

second

hold up time

At 120 VAC and 80% of rated maximim load

20

ms

adjustability

Adjustable with built-in trim pot.

+/- 5%

LED display

When green (LED1) is on the power supply is operating normally.

power good

Designated as PG on the CN1. This signal

goes TTL high 100-500 mS after the output reaches regulation.

It goes low at least 1 mS before loss of regulation.

fan drive

12 VDC/400mA for external fan

PROTECTION CIRCUIT

parameter

conditions/description

input fuse

Built-in ac fuse. A blown fuse usually indicates permanent

damage to the power supply serviceable by factory only.

overload

Current limiting starts at 110-140% of the rated output current in foldback mode and

recovers automatically.

short circuit

Short circuit can be continuous. Recovers automatically upon removal of short.

output over-voltage

Output is protected agaist overvoltage. Unit shuts down and latches

when voltage at output terminals exceeds 130%. AC input needs to be

reset to restart the power supply.

over temp.

Power supply shuts down when temperature is in excess of 85 ºC. Auto recovery.