cui.com
date 03/31/2014 │ page 2 of 5CUI Inc │ SERIES: VSK-S3 │ DESCRIPTION: AC-DC POWER SUPPLY
INPUT
parameter conditions/description min typ max units
voltage
85
110
264
370
Vac
Vdc
frequency 47 440 Hz
current
at 110 Vac
at 230 Vac
65
30
mA
mA
inrush current
at 110 Vac
at 230 Vac
10
20
A
A
external input fuse
(recommended)
slow blow, 250 V 0.5 A
OUTPUT
parameter conditions/description min typ max units
line regulation ±0.5 %
load regulation 10 ~ 100% ±1 %
temperature coefcient 0.02 %/°C
hold-up time at 230 Vac 50 ms
voltage accuracy
3.3 V model
all other models
±3
±2
%
%
switching frequency 100 kHz
PROTECTIONS
parameter conditions/description min typ max units
over voltage protection chip lock up
short circuit protection auto recovery with no damage from a short on any output
over temperature protection 150 °C
SAFETY & COMPLIANCE
parameter conditions/description min typ max units
isolation voltage primary to secondary (for 1 minute) 3,000 Vac
safety approvals UL 60950-1
safety class class II
EMI/EMC
EN 55022 (level A), IEC/EN 61000-4-2 (level 4, 8kV/15kV), IEC/EN 61000-4-3, IEC/EN 61000-4-4
(level 3, 2kV), IEC/EN 61000-4-5 (level 3, 1kV/2kV)
MTBF 25°C 300,000 hrs
RoHS 2011/65/EU
ENVIRONMENTAL
parameter conditions/description min typ max units
operating temperature -25 70 °C
storage temperature -40 105 °C
case temperature 95 °C
operating humidity non-condensing 95 %
For more information, please visit the product page.