cui.com

CUI Inc

│ SERIES: VF-D250-DXXA-CF │ DESCRIPTION: AC-DC POWER SUPPLY

date 03/29/2013

│ page 2 of 5

INPUT

parameter

conditions/description

min

typ

max

units

voltage

90-132/180-264 auto selectable

90/180

132/264

Vac

frequency

47

63

Hz

current

at 110-120 Vac, cold start

at 200-240 Vac, cold start

6

3

A

A

inrush current

at 115 Vac, full load, cold start

at 230 Vac, full load, cold start

35

70

A

A

power factor

Compliant to EN61000-3-2 class A

remote on/off

Designated as RMSW on the CN1, requires a low signal to inhibit output. Hiccough mode.

OUTPUT

parameter

conditions/description

min

typ

max

units

line regulation

low line to high line

±5

%

load regulation

all other outputs

±5

%

temperature coefficient

0.25

mV/°C

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%.

start-up time

At 120 Vac

1

s

rise time

0.2

20

ms

hold-up time

At 120 VAC and 80% of rated maximim load

20

ms

adjustability

±5

%

power good

Designated as PG on the CN1.

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

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

fan drive

12 Vdc / 400 mA for external fan

PROTECTIONS

parameter

conditions/description

min

typ

max

units

over voltage protection

AC input needs to be reset to restart the power supply.

130

%

over current protection

Automatically recovers

110

140

%

short circuit protection

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

over temp. protection

Auto recovery.

85

°C

SAFETY & COMPLIANCE

parameter

conditions/description

min

typ

max

units

isolation voltage

Applied for 3 seconds at 10 mA max.

Primary to secondary:

Primary to transformer core:

Primary to earth chassis:

3,000

1,500

1,500

Vac

Vac

Vac

safety approvals

UL60950-1, CSA C22.2 No. 60950-1, TUV EN60950-1 and CB

EMI/EMC

CISPR 22/EN55022 class B, EN61000-3-2, 3,

EN61000-4-2, 3, 4, 5, 6, 8, 11, EN55024 CE marked (LVD)

leakage current

at 240 Vac

at 120 Vac

500

300

μA

μA

RoHS compliant

yes

MTBF

According to MIL-HDBK-217 at 30 ºC

100,000

hrs

For more information, please visit the product page.