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VSK-S3-24U

P1-P3P4-P5
cui.com
date 03/31/2014 │ page 4 of 5CUI Inc │ SERIES: VSK-S3 │ DESCRIPTION: AC-DC POWER SUPPLY
L
+V0
-V0
L
N
N
C1
C2
*FUS E
Tvs
RL
*NTC
MOV
C3
22
26
+
+
Figure1
L
+V 0
-V0
L
N
N
C1 C2
*F USE
Tvs
RL
*NTC
MOV
NF
C8
C6
C7
C3
+
+
22
26
Figure 2
VSK-S3 EMC
Filtering Circuit
TYPICAL APPLICATION CIRCUIT
EXTERNAL CAPACITORS TYPICAL VALUE (Unit: µF)
MODEL C1 C2 C3 TVS
VSK-S3-3R3U 150 0.1 4.7/400V P4KE6.8A
VSK-S3-5U 150 0.1 4.7/400V P4KE6.8A
VSK-S3-9U 150 0.1 4.7/400V P4KE12A
VSK-S3-12U 150 0.1 4.7/400V P4KE20A
VSK-S3-15U 150 0.1 4.7/400V P4KE20A
VSK-S3-24U 150 0.1 4.7/400V P4KE30A
Notes: 1. Output ltering capacitors C1, C3 is electrolytic capacitors, It is recommended to use high frequency
and low impedance electrolytic capacitors. For capacitance and current of capacitor please refer to
manufacture’s datasheet. Voltage derating of apacitor should be 80% or above. C2, C4 is ceramic
capacitors , it is used to lter high frequency noise. TVS is a recommended component to protect
post-circuits (when converter fails).
2. MOV is required for VSK-S3 models. Model: 471KD05, it is used to protect the device under surge.
3. It is recommended to connect FUSE, the parameter is 0.5A/250V slow blow. External input NTC is
recommended to use D -14 or 10Ω/2W wire-round resistor.
4. If EMC performance is required, recommended to add “EMC lter” at the input end(see gure 2)
C6:X capacitor, recommended parameter 0.1uF/275V; C7,C8:Y capacitor, recommended parameter
220pF/275V; NF: common model choke, recommended inductance is about 10mH-30mH.
5. Terminals 22 and 26 are internal rectication and ltering terminals. To protect the models further, it
is recommended to connect an electrolytic capacitor C3 (it is recommended to be 4.7uF/400V). If
operation voltage of the module is between 160~264VAC, C3 can be removed.
Note: 1. All specications measured at Ta=25°C, humidity <75%, rated input voltage, and rated output load, unless otherwise specied.
For more information, please visit the product page.
date 03/31/2014 │ page 5 of 5CUI Inc │ SERIES: VSK-S3 │ DESCRIPTION: AC-DC POWER SUPPLY
CUI offers a two (2) year limited warranty. Complete warranty information is listed on our website.
CUI reserves the right to make changes to the product at any time without notice. Information provided by CUI is believed to be accurate and reliable. However, no responsibility is
assumed by CUI for its use, nor for any infringements of patents or other rights of third parties which may result from its use.
CUI products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. A critical component is any component of a
life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
Headquarters
20050 SW 112th Ave.
Tualatin, OR 97062
800.275.4899
Fax 503.612.2383
cui.com
techsupport@cui.com
rev. description date
1.0 initial release 02/27/2009
1.01 new template applied 04/10/2012
1.02 V-Innity branding removed 08/15/2012
1.03 updated spec 03/31/2014
The revision history provided is for informational purposes only and is believed to be accurate.
REVISION HISTORY
For more information, please visit the product page.
P1-P3P4-P5

VSK-S3-24U

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