cui .com date 08/16/2012 page 1 of 4 series: vsk-s2 description: ac-dc power supply model output voltage output current output power ripple and noise 1 ef ciency (vdc) max (a) max (w) max (mvp-p) typ (%) vsk-s2-3r3u 3.3 0.6 2 200 65 vsk-s2-5u 5 0.4 2 200 70 vsk-s2-9u 9 0.222 2 200 72 vsk-s2-12u 12 0.167 2 200 76 VSK-S2-15U 15 0.133 2 200 76 vsk-s2-24u 24 0.083 2 200 78 notes: 1. at full load, 100 ~ 240 vac input, 20 mhz bandwidth oscilloscope, each output terminated with 10 f aluminum electrolytic and 0.1 f ceramic capacitors. 2. all speci cations are measured at rated input voltage, rated output load, ta=25c, and humidity < 75% unless otherwise speci ed part number key vsk-s2 - xx u base number output voltage features ? up to 2 w continuous power ? compact board mount design ? universal input (85~305 vac / 120~430 vdc) ? single output from 3.3~24 v ? over current and short circuit protection ? ul/cul and ce safety approvals ? efficiency up to 78% rohs
cui .com date 08/16/2012 page 2 of 4 cui inc series: vsk-s2 description: ac-dc power supply input parameter conditions/description min typ max units voltage 85 120 305 430 vac vdc frequency 47 63 hz current at 110 vac at 230 vac 44 25 ma ma inrush current at 110 vac at 230 vac 5 11 a a output parameter conditions/description min typ max units line regulation 2 % load regulation 10 ~ 100% 5 % ripple and noise 100 200 mvp-p voltage accuracy 3.3 v model all other models 6 5 % % switching frequency 100 khz protections parameter conditions/description min typ max units over current protection 110 % short circuit protection auto recovery with no damage from a short on any output safety & compliance parameter conditions/description min typ max units isolation voltage for 1 minute 3,000 vac safety approvals ul 60950-1, en 60950-1/iec 60950-1 safety class class ii emi/emc en 55022 class b, iec/en 61000-4-(2,3,4,5,6) leakage current 0.15 ma rohs compliant yes mtbf 25c 300,000 hrs environmental parameter conditions/description min typ max units operating temperature -25 70 c storage temperature -40 85 c operating humidity non-condensing 30 90 % storage humidity 20 95 %
cui .com date 08/16/2012 page 3 of 4 cui inc series: vsk-s2 description: ac-dc power supply derating curves 1. output power vs. ambient temperature 2. ef ciency vs. output power (vin=220vac) (fro nt vie w) (bottom view) (side vie w) > @ > @ > @ > @ > @ > @ > @ 2 13 4 > @ > @ ? 1.10[0.43] 1 2 4 3 > @ > @ > @ > @ > @ mechanical drawing mechanical parameter conditions/description min typ max units dimensions 1.327 x 0.874 x 0.708 (33.70 x 22.20 x 18.00 mm) inch case material ul94v-0 weight 20 g units: mm [inches] tolerance: 0.5 [0.02] pin section tolerance: 0.10 mm [0.004] 3. ef ciency vs. input voltage (load=100%) pin connections pin funtion 1 ac(n) 2 ac(l) 3-vo 4+vo load (%) 85 120 220 240 264 305 efficiency (%) input voltage (vac) efficiency (%) 80 75 70 65 60 55 50 45 40 10 20 30 40 50 60 70 80 90 100 80 75 70 65 60 55 50 45 100 80 60 40 20 ambient temperature (c) load (%) -40 -20 0 20 40 55 70 80 100 120
date 08/16/2012 page 4 of 4 cui inc series: vsk-s2 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 b e 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 typical application circuit rev. description date 1.0 initial release 04/19/2012 1.01 updated features 06/04/2012 1.02 v-in nity branding removed 08/16/2012 the revision history provided is for informational purposes only and is believed to be accurate. revision history nf c1 c5 c3 mov l n ntc l n +vo -vo + c2 rl tvs c4 fuse external capacitors typical value (unit: f) model c1 c2 tvs vsk-s2-3r3u 220 f 0.1 f/50 v p4ke6.8a vsk-s2-5u 220 f 0.1 f/50 v p4ke6.8a vsk-s2-9u 120 f 0.1 f/50 v p4ke12a vsk-s2-12u 120 f 0.1 f/50 v p4ke20a VSK-S2-15U 120 f 0.1 f/50 v p4ke20a vsk-s2-24u 68 f 0.1 f/50 v p4ke30a notes: 1. output ltering capacitor c1 is an electrolytic capacitor. 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 capacitor should be 80% or above. c2 is ceramic capacitor, it is used to lter high frequency noise. tvs is a recommended component to protect post-circuits (if converter fails). 2. it is recommended to use a 2a/250v slow blow fuse. 3. mov is required to protect the device under surge. varistor model: 561kd14 c3,c4: y capacitor, recommended parameter 2,200~4,700pf/400v; c5: x capacitor, recommended parameter 0.1~0.33 f/300v; nf: common model choke, recommended inductance is about 15mh~30mh.
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