cui .com date 02/19/2013 page 1 of 5 date 02/19/2013 page 1 of 5 features ? 2 w isolated output ? wide input (2:1) ? industry standard 8 pin sip package ? dual unregulated outputs ? 1,500 v isolation ? short circuit protection ? wide temperature (-40~85c) ? efficiency up to 79% rohs model input voltage output voltage output current output power ripple and noise 1 effciency typ (vdc) range (vdc) (vdc) min (ma) max (ma) max (w) max (mvp-p) typ (%) VWRAS2-d5-d5-sip 5 4.5~9.0 5 20 200 2 100 67 VWRAS2-d5-d9-sip 5 4.5~9.0 9 11 111 2 100 71 VWRAS2-d5-d12-sip 5 4.5~9.0 12 8 83 2 100 72 VWRAS2-d5-d15-sip 5 4.5~9.0 15 7 67 2 100 73 VWRAS2-d12-d5-sip 12 4.5~9.0 5 20 200 2 100 73 VWRAS2-d12-d9-sip 12 4.5~9.0 9 11 111 2 100 74 VWRAS2-d12-d12-sip 12 9.0~18.0 12 8 83 2 100 78 VWRAS2-d12-d15-sip 12 9.0~18.0 15 7 67 2 100 77 VWRAS2-d24-d5-sip 24 9.0~18.0 5 20 200 2 100 76 VWRAS2-d24-d9-sip 24 9.0~18.0 9 11 111 2 100 78 VWRAS2-d24-d12-sip 24 9.0~18.0 12 8 83 2 100 79 VWRAS2-d24-d15-sip 24 9.0~18.0 15 7 67 2 100 78 VWRAS2-d48-d5-sip 48 18.0~36.0 5 20 200 2 100 75 VWRAS2-d48-d9-sip 48 18.0~36.0 9 11 111 2 100 78 VWRAS2-d48-d12-sip 48 18.0~36.0 12 8 83 2 100 79 VWRAS2-d48-d15-sip 48 18.0~36.0 15 7 67 2 100 79 notes: 1. ripple and noise are measured at 20 mhz bw part number key VWRAS2 - d xx - d xx -sip input voltage output voltage base number packaging style series : VWRAS2 description: dc-dc converter
cui .com date 02/19/2013 page 2 of 5 input parameter conditions/description min typ max units operating input voltage 5 v model 12 v model 24 v model 48 v model 4.5 9.0 18.0 36.0 5 12 24 48 9.0 18.0 36.0 72.0 vdc vdc vdc vdc output parameter conditions/description min typ max units line regulation input voltage from low to high 0.2 0.5 % load regulation measured from 10% load to full load 0.5 1.0 % voltage accuracy input voltage range refer to output load 1 3 % switching frequency 100% load, input voltage range 180 500 khz temperature coeffcient 0.03 %/c protections parameter conditions/description min typ max units short circuit protection continuous safety and compliance parameter conditions/description min typ max units isolation voltage for 1 minute at 1 ma max. 1,500 vdc isolation resistance at 500 vdc 1,000 m? mtbf 1,000,000 hours rohs compliant yes environmental parameter conditions/description min typ max units operating temperature -40 85 c storage temperature -50 125 c storage humidity non-condensing 95 % temperature rise at full load 15 35 c lead temperature 1.5 mm from case for 10 seconds 300 c cui inc series : VWRAS2 description: dc-dc converter
cui .com date 02/19/2013 page 3 of 5 mechanical parameter conditions/description min typ max units dimensions 0.866 x 0.374 x 0.472 (22.00 x 9.50 x 12.00 mm) inch case material plastic (ul94-v0) weight 5.5 g 22 .0 0 (0 .4 7 2) (0 . 02 0 ) (0 .8 66 ) 12 . 0 0 0. 50 ( 0. 1 6 1 ) 4 . 10 9. 50 2. 10 (0 . 374) 1 .3 0 (0 .0 5 1 ) (0 .0 83) 2. 54 (0 .1 00 ) 23 5 26 78 1 (bo tt om vi ew ) (si de vi ew ) ? 1.00 [0.039 ] 2 . 54 [0 .1 00 ] 2 .5 0[ 0. 09 8] 2.10 [0.083 ] 2. 54 [0 .1 00 ] 23 56 78 1 mechanical drawing pin connections pin function 1 gnd 2 +vin 3 ctrl 5 nc 6 +vo 7 0 v 8 -vo units: mm [inches] tolerance: 0.25 [0.010] pin section tolerance: 0.10 mm [0.004] 100 80 60 40 20 ambient t emper ature (c) load (% ) -40- 20 02 04 06 07 1 85 100 120 derating curves 1. output power vs. ambient temperature cui inc series : VWRAS2 description: dc-dc converter
cui .com date 02/19/2013 page 4 of 5 1. ctrl terminal when open or high impedance,the converter work well; when this pin is high; the converter shutdown; it should be note that the input current (ic) should between 5-10ma, exceeding the maximum 20ma will cause permanence damage to the converter. the value of r can be derived as follows : 2. recommended circuit if you want to further decrease the input/output ripple, an lc fltering network may be connected to the input and output ends of the dc/dc converter, see (figure 1). however, the capacitance of the output flter capacitor must be proper. if the capacitance is too big, a startup problem might arise. for every channel of output, provided the safe and reliable operation is ensured, the greatest capacitance of its flter capacitor sees (table 1). 3. input current while using unstable power source, please ensure the output voltage and ripple voltage do not excced indexes of the converter. the preceding power source must be able to provide for converter suffcient starting current ip. general: ip 1.4*iin-max 4. no parallel connection or plug and play +v o 0v co ut 6 8 7 co ut lo ut lo ut -v o ci n vi n gn d 2 1 3 vc r li n ic d1 vin (vdc) cout (f) 5 560 9 470 12 330 15 270 24 100 table 1 application notes i n pu t cu rr e nt (a ) i nputv ol ta g e ( v ) in pu tv oltage ra nge ip r = v c -v d -1.0 i c figure 1 cin 5, 12 v 24, 48 v 100 f 10 ~ 22 f lin -- 4.7 ~ 120 h cout -- 100 f (typ) lout -- 2.2 ~ 10 h cui inc series : VWRAS2 description: dc-dc converter
date 02/19/2013 page 5 of 5 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 11/10/2010 1.01 new template applied 04/16/2012 1.02 v-infnity branding removed 09/10/2012 1.03 updated recommended circuit table 02/19/2013 the revision history provided is for informational purposes only and is believed to be accurate. revision history cui inc series : VWRAS2 description: dc-dc converter
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