cui.com

date 04/28/2021

│ page 2 of 7

CUI Inc

│ SERIES: VOF-S25B │ DESCRIPTION: AC-DC POWER SUPPLY

INPUT

parameter

conditions/description

min

typ

max

units

voltage

90

120

264

370

Vac

Vdc

frequency

47

63

Hz

current

at 100 Vac, full load

700

mA

inrush current

at 240 Vac, cold start, 25°C

60

A

leakage current

at 264 Vac

0.25

mA

OUTPUT

parameter

conditions/description

min

typ

max

units

capacitive load

5 Vdc output models

12 Vdc output models

15 Vdc output models

24 Vdc output models

36 Vdc output models

48 Vdc output models

81,000

40,900

19,800

6,600

4,000

2,170

μF

μF

μF

μF

μF

μF

initial set point accuracy

5 Vdc output model

all other models

±2

±1

%

%

line regulation

measured at high line to low line at full load

±1

%

load regulation

measured at 10%~100% load

±1

%

start-up time

3

s

hold-up time

at 115 Vac

8

ms

switching frequency

65

kHz

temperature coefficient

±0.05

%/°C

PROTECTIONS

parameter

conditions/description

min

typ

max

units

over voltage protection

TVS to clamp output votlage

5 Vdc output models

12 Vdc output models

15 Vdc output models

24 Vdc output models

36 Vdc output models

48 Vdc output models

6.8

15.0

18.0

30.0

47.0

56.0

Vdc

Vdc

Vdc

Vdc

Vdc

Vdc

short circuit protection

hiccup, auto recovery

SAFETY & COMPLIANCE

parameter

conditions/description

min

typ

max

units

isolation voltage

input to output for 1 minute

3,000

Vac

isolation resistance

100

MΩ

safety approvals

certified to IEC/EN/UL 62368-1

designed to meet IEC/EN 60335

safety class

Class II

conducted emissions

EN55032, EN61000-6-3:2012, Class B,

47 CFR FCC Part 15 Subpart B (Class B)

radiated emissions

EN55032, EN61000-6-3:2012, Class B,

47 CFR FCC Part 15 Subpart B (Class B)

harmonic current emissions

EN61000-3-2:2014

voltage fluctuations & flicker

EN61000-3-3:2013

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