rev. page date rev. page date description: dc-dc converter 1 of 3 11/2010 20050 sw 112 th ave. tualatin, oregon 97062 p h o n e phone 503.612.2300 f a x www.v-infinity.com fax 503.612.2383 part number: vwras2 features wide (2:1) input range high efficiency to 80% regulated dual voltage output i/o isolation 1500vdc no heatsink required short circuit protection remote on/off mtbf >1,000,000 hrs temperature range: -40c~+85c description designed to convert a wide input voltage range into an isolated regulated voltage, the vwras2-sip series is well suited for providing board-mount local supplies in a wide range of applications, including mixed analog/digital circuits, test & measurement equip., process/machine controls, datacom/telecom fields, etc... model input voltage output output current package number nominal range max. voltage max. min. efficiency style vwras2-d5-d5-sip 5 vdc 4.5~9.0 vdc 11 vdc 5 vdc 200 ma 20 ma 67% sip vwras2-d5-d9-sip 5 vdc 4.5~9.0 vdc 11 vdc 9 vdc 111 ma 11 ma 71% sip vwras2-d5-d12-sip 5 vdc 4.5~9.0 vdc 11 vdc 12 vdc 83 ma 8 ma 72% sip vwras2-d5-d15-sip 5 vdc 4.5~9.0 vdc 11 vdc 15 vdc 67 ma 7 ma 73% sip vwras2-d12-d5-sip 12 vdc 9.0~18.0 vdc 22 vdc 5 vdc 200 ma 20 ma 75% sip vwras2-d12-d9-sip 12 vdc 9.0~18.0 vdc 22 vdc 9 vdc 111 ma 11 ma 76% sip vwras2-d12-d12-sip 12 vdc 9.0~18.0 vdc 22 vdc 12 vdc 83 ma 8 ma 78% sip vwras2-d12-d15-sip 12 vdc 9.0~18.0 vdc 22 vdc 15 vdc 67 ma 7 ma 78% sip vwras2-d24-d5-sip 24 vdc 18.0~36.0 vdc 40 vdc 5 vdc 200 ma 20 ma 76% sip vwras2-d24-d9-sip 24 vdc 18.0~36.0 vdc 40 vdc 9 vdc 111 ma 11 ma 78% sip vwras2-d24-d12-sip 24 vdc 18.0~36.0 vdc 40 vdc 12 vdc 83 ma 8 ma 79% sip vwras2-d24-d15-sip 24 vdc 18.0~36.0 vdc 40 vdc 15 vdc 67 ma 7 ma 78% sip VWRAS2-D48-D5-SIP 48 vdc 36.0~72.0 vdc 80 vdc 5 vdc 200 ma 20 ma 75% sip vwras2-d48-d9-sip 48 vdc 36.0~72.0 vdc 80 vdc 9 vdc 111 ma 11 ma 78% sip vwras2-d48-d12-sip 48 vdc 36.0~72.0 vdc 80 vdc 12 vdc 83 ma 8 ma 80% sip vwras2-d48-d15-sip 48 vdc 36.0~72.0 vdc 80 vdc 15 vdc 67 ma 7 ma 80% sip output specifications item test conditions min. typ. max. units 2w output power 0.2 2 w output voltage accuracy refer to recommended circuit 1 3 % line regulation input voltage from low to high 0.2 0.5 % load regulation 10% to 100% full load 0.5 1.0 % temperature drift refer to recommended circuit 0.03 %/c output ripple& noise 20 mhz bandwidth 35 100 mvp-p switching frequency 100% load, nominal input 80k 550k hz note: 1. all specifications measured at ta=25c, humidity <75%, nominal input voltage and rated output load unless otherwise specified.
rev. page date description: dc-dc converter 2 of 3 11/2010 20050 sw 112 th ave. tualatin, oregon 97062 p h o n e phone 503.612.2300 f a x www.v-infinity.com fax 503.612.2383 part number: vwras2 recommended circuit it is best to test with full load and not to test without load. to further reduce output ripple, you may increase the external capacitor, choose a capacitor with low esr, or add external inductor to the circuit as shown on the left. general: cin: 5v, 12v 100f 24v, 48v 10f ~ 47f cout:100f(typ) lin: 4.7h ~ 120 h lout: 2.2h ~ 10h general specifications output short circuit protection continuous temperature rise at full load 15c typ., 35c max. cooling free air convection no-load power consumption 100mw (typical) operating temperature range -40c to +85c storage temperature range -50c to +125c soldering temperature 300c (1.5mm from case for 10sec.) storage humidity range <95% case material plastic (ul94-v0) mtbf >1,000,000 hrs. isolation specifications item test conditions min. typ. max. units isolation voltage flash tested for 1 min. 1500 vdc isolation resistance test at 500 vdc 1000 m isolation capacitance input/output 80 pf typical characteristics +vo com cout cin -vin +vin 2 1 6 8 3 vc d1 ic r lin 7 cout l l -vo footprint details recommended footprint top view,grid:2.54mm(0.1inch), diameter:1.00mm note: unit:mm(inch) pin section:0.50*0.30mm(0.020*0.012inch) pin tolerances: 0.10mm( 0.004inch) general tolerances: 0.25mm( 0.010inch) + + + + dual output & single output pin dual 1 2 3 5 +vin -vin +vo nc com 7 8 6 ctrl -vo (0.866) 1 2 .00 0.50 4.10 +0.50 0 +0.020 0 ) 23 5 2678 1 nc:no connection first angle projection 35 outline dimensions & recommended layout pattern
rev. page date description: dc-dc converter 3 of 3 11/2010 20050 sw 112 th ave. tualatin, oregon 97062 p h o n e phone 503.612.2300 f a x www.v-infinity.com fax 503.612.2383 part number: vwras2 application notes: - all of the vwras2-sip series have been tested according to the following recommended testing circuit before leaving the factory. this series should be tested under load(figure 3). if you want to further decrease the input/output ripple, you can increase capacitance properly or choose capacitors with low esr. however, the capacitance should not be too high(table 2). - nc terminals unless otherwise specified, nc terminals of all series are used for converter's interior circuit connection, and are not allowed connection of any external circuit. operating temp.( ) c temperature derating graph - input current nominal input voltage range. the input current of the power supply must be sufficient to the startup current (ip) of the dc/dc module (figure 2) input current(a) input volta g e ( v ) input voltage range ip figure 3 - output load in order to ensure the product operates efficiently and reliably, make sure the specified range of input voltage is not exceeded. no parallel connection or plug and play. external capacitor table single vout(vdc) cout(uf) dual vout(vdc) cout(uf) 3.3 2200 - - 5 1000 560 9 9 470 12 12 330 15 15 270 24 - - 5 820 680 560 470 table 2 remote on/off control (see figure 1) on: when control pin (ctrl pin 3) open or ic < 0.5ma, converter will have normal output. off: with a 3-10ma input current (ic) to pin 3, output will be disabled. under no conditions should input current (ic) exceed 20ma. the value of r in figure 1 can be derived as follows: r= vc - vd - 0.65v vc= voltage at control input ic vd= diode (d1) voltage drop (.7v voltage drop typical ) ic= input current (5ma recommended disable current) example 1 : logic circuit apply 5v ttl logic signal on vc to disable output r= 5v -0.7v -0.65v = 730 choose 720 resistor .005a example 2 : short vin to vc apply 12v on vc to disable output r= 12v - 0.7v - 0.65v = 2130 choose 2k resistor .005a -
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