rev. page date page date description: dc-dc converter 1 of 3 05/2010 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: vwrat2 features wide (2:1) input range regulated dual voltage output i/o isolation: 1500 v dc no heatsink required short circuit protection mtbf >1,000,000 hours temperature range: -40c~+85c input parameter conditions/description min nom max units input voltage range 12 9~18 22 v dc 24 18~36 40 v dc output parameter conditions/description min nom max units 2w output power 0.2 2 w voltage accuracy refer to recommended circuit 1 2 % ripple & noise @ 20mhz bandwidth 35 75 mvpp line regulation input voltage from low to high 0.2 0.5 % load regulation 10% to 100% full load 0.5 1.0 % temperature coefficient refer to recommended circuit 0.03 %/c switching frequency 100% load, nominal input 300 khz *v-infinity reserves the right to make changes to its products or to discontinue any product or service without notice, and to advise customers to verify the most up-to- date product information before placing orders. v-infinity assumes no liability or responsibility for customers applications u sing v-infinity products other than repair or replacing (at v-is option) v-infinity products not meeting v-is published specifications. nothing will be covered outside of standard product warranty. description designed to convert a wide input voltage range into an isolated regulated voltage, the vwrat2-smt 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 voltage output current efficiency nominal range max. (v dc) max. min. typ. (v dc) (v dc) (v dc) (ma) (ma) (%) VWRAT2-D12-D5-SMT 12 9.0~18.0 22 5 200 20 76 vwrat2-d12-d9-smt 12 9.0~18.0 22 9 111 11 78 vwrat2-d12-d12-smt 12 9.0~18.0 22 12 83 8 80 vwrat2-d12-d15-smt 12 9.0~18.0 22 15 67 7 79 vwrat2-d24-d5-smt 24 18.0~36.0 40 5 200 20 77 vwrat2-d24-d9-smt 24 18.0~36.0 40 9 111 11 79 vwrat2-d24-d12-smt 24 18.0~36.0 40 12 83 8 80 vwrat2-d24-d15-smt 24 18.0~36.0 40 15 67 7 79 notes: 1. all specifications measured at ta=25c, humidity <75%, nominal input voltage and rated output load unless otherwise specified.
page date description: dc-dc converter 2 of 3 05/2010 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: vwrat2 general specifications parameter conditions/description output short circuit protection hiccup, automatic recovery temperature rise at full load 15c typ., 35c max. cooling free air convection operating temp. range -40c ~ +85c storage temp. range -55c ~ +125c reflow soldering temp. 245c (for 10 seconds) storage humidity range 95% mtbf >1,000,000 hours isolation specifications parameter conditions/description min nom max units isolation voltage flash tested for 1 minute 1500 v dc isolation resistance test at 500 v dc 1000 m isolation capacitance input/output 85 pf 1 8 7 9 10 nc +vin -vin -vo +vo 0v 16 3.04[0.120] 23.86[0.939] 15.24[0.600] 2.54[0.100] 18.10[0.713] 13.7 0[0 .539 ] 0.50[0.020] 1.02[0.040] 8.00[0.315] 7.50[0.295] 0.25[0.010] 5 1.40 0.20 [0.055 0.008] 17.22[0.678] 2.54[0.100] 1.00[0.039] 2.10[0. 083] 2.54[0.100] 16 10 9 178 16 10 9 178 pin footprint details note: unit:mm[inch] pin section tolerances: 0.10mm[ 0.004inch] general tolerances: 0.25mm[ 0.010inch] (top view) (side view) nc: no connection 18.10[0.713] recommended reflow profile outline dimensions & footprint
page date description: dc-dc converter 3 of 3 05/2010 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: vwrat2 application notes: - all of the vwrat2-smt series have been tested according to the following recommended testing circuit before leaving the factory. this series should be tested under load (figure 1). 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 1). - 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. - 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) temperature derating curve - 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. dual vout (vdc) cout (uf) 5 560 9 470 12 330 15 220 table 1 figure 2 +vin -vin +vout com cin dc dc -vout $ cout cout figure 1 - 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 above. general: cin: 12v 100f 24v 10f to 47f cout:see table 1
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