cui.com

date 07/07/2021

│ page 2 of 10

CUI Inc

│ SERIES: VOF-300 │ DESCRIPTION: AC-DC POWER SUPPLY

INPUT

parameter

conditions/description

min

typ

max

units

voltage

90

264

Vac

frequency

47

63

Hz

current

at 100 Vac

at 240 Vac

4.0

1.8

A

A

inrush current

at 240 Vac, 25°C, cold start

30

A

leakage current

3.5

mA

power factor correction

meets EN 61000-3-2

no load power consumption

measured with the PS-ON signal configured to OFF

0.3

W

OUTPUT

parameter

conditions/description

min

typ

max

units

output capacitance

at 115/230 Vac, full load

12 Vdc output models

24 Vdc output models

36 Vdc output models

48 Vdc output models

25,000

12,500

5,000

3,750

μF

μF

μF

μF

initial set point accuracy

at full load, 25°C

Vo

Vstb

±1

±3

%

%

line regulation

high line to low line at full load

Vo

Vstb

±0.5

±1

%

%

load regulation

from full to 10% load

Vo

Vstb

±1

±5

%

%

hold-up time

at 115 Vac

16

ms

adjustability

built in trim pot (VR)

±5

%

switching frequency

at full load

60

80

kHz

temperature coefficient

±0.05

%/°C

power on

PS-ON

0

2

Vdc

PS-ON = 0V

4.5

mA

power off

PS-ON = NC (internal circuit will drive PS-On to 11~16 Vdc)

PS-ON = NC

0

mA

power good (PG)

TTL goes high 50~250 ms after powered on

TTL goes low 5~20 ms before 90% Vo

standby output voltage

5 Vdc / 1 A

fan output

12 Vdc / 500 mA

Notes:

1. When not used, short PS-ON & signal GND.

PROTECTIONS

parameter

conditions/description

min

typ

max

units

over voltage protection

latch mode

12 Vdc output models

24 Vdc output models

36 Vdc output models

48 Vdc output models

15

30

43

56

Vdc

Vdc

Vdc

Vdc

over current protection

hiccup, auto recovery

130

150

180

%

short circuit protection

auto recovery

over temperature protection

auto recovery (temperature of C37)

110

°C

Additional Resources: Product Page | 3D Model