cui.com
CUI Inc │ SERIES: VOF-25 │ DESCRIPTION: AC-DC POWER SUPPLY date 08/17/2012 │ page 2 of 5
INPUT
parameter conditions/description min typ max units
voltage
85
120
264
375
Vac
Vdc
frequency 47 63 Hz
current
at 110 Vac
at 220 Vac
0.7
0.35
A
A
inrush current
at 110 Vac, full load, cold start
at 220 Vac, full load, cold start
20
40
A
A
input fuse built-in, non-user serviceable
OUTPUT
parameter conditions/description min typ max units
line regulation high line to low line at full load ±0.5 %
load regulation full load to 10% load ±1 %
temperature coeffi cient ±0.05 %/°C
hold-up time 115 Vac at full load 16 ms
adjustability adjustable with built-in trim pot -5 +5 %
switching frequency 45 50 55 kHz
PROTECTIONS
parameter conditions/description min typ max units
over voltage protection clamped by TVS 115 %
over current protection automatically recovers 105 %Io
short circuit protection
protected, long term short circuit may reduce
reliability
SAFETY & COMPLIANCE
parameter conditions/description min nom max units
isolation voltage
primary to secondary for 1 minute
primary to transformer core for 1 minute
primary to ground for 1 minute
3,000
1,500
1,500
Vac
Vac
Vac
isolation resistance
input to output at 500 Vdc at 25°C 50
MΩ
safety approvals TUV EN 60950, CE, UL/cUL 60950-1
EMI/EMC FCC class B, EN 55022 class B
leakage current 1.5 mA
RoHS compliant yes
MTBF according to MIL-HDBK-217F 250,000 hours
ENVIRONMENTAL
parameter conditions/description min nom max units
operating temperature see derating curve 0 60 °C
storage temperature -20 85 °C
operating humidity non-condensing 20 90 %
storage humidity non-condensing 20 95 %
operating altitude
10,000
3,000
ft
m
storage altitude
30,000
9,000
ft
m
For more information, please visit the product page.
