rev. description features 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... ·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: -40°C~+85°C MODEL notes: 1. 1 of 3 date date 05/2010 DESCRIPTION: dc-dc converter PART NUMBER: VWRAT2 VWRAT2-D12-D5-SMT VWRAT2-D12-D9-SMT VWRAT2-D12-D12-SMT VWRAT2-D12-D15-SMT VWRAT2-D24-D5-SMT VWRAT2-D24-D9-SMT VWRAT2-D24-D12-SMT VWRAT2-D24-D15-SMT page page nominal (V dc) input voltage range (V dc) max. (V dc) 12 12 12 12 24 24 24 24 9.0~18.0 9.0~18.0 9.0~18.0 9.0~18.0 18.0~36.0 18.0~36.0 18.0~36.0 18.0~36.0 22 22 22 22 40 40 40 40 output voltage (V dc) ±5 ±9 ±12 ±15 ±5 ±9 ±12 ±15 output current max. min. (mA) (mA) ±200 ±111 ±83 ±67 ±200 ±111 ±83 ±67 ±20 ±11 ±8 ±7 ±20 ±11 ±8 ±7 efficiency typ. (%) 76 78 80 79 77 79 80 79 All specifications measured at TA=25°C, humidity <75%, nominal input voltage and rated output load unless otherwise specified. INPUT parameter input voltage range conditions/description min 12 24 nom 9~18 18~36 max 22 40 units V dc V dc conditions/description min 0.2 nom max 2 ±2 75 ±0.5 ±1.0 0.03 units W % mVpp % % %/°C KHz OUTPUT parameter 2W output power voltage accuracy ripple & noise line regulation load regulation temperature coefficient switching frequency refer to recommended circuit @ 20MHz Bandwidth input voltage from low to high 10% to 100% full load refer to recommended circuit 100% load, nominal input ±1 35 ±0.2 ±0.5 300 *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-todate product information before placing orders. V-Infinity assumes no liability or responsibility for customer’s applications using V-Infinity products other than repair or replacing (at V-I’s option) V-Infinity products not meeting V-I’s published specifications. Nothing will be covered outside of standard product warranty. 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383 www.v-infinity.com page 2 of 3 date 05/2010 DESCRIPTION: dc-dc converter PART NUMBER: VWRAT2 GENERAL SPECIFICATIONS parameter output short circuit protection temperature rise at full load cooling operating temp. range storage temp. range reflow soldering temp. storage humidity range MTBF conditions/description Hiccup, automatic recovery 15°C typ., 35°C max. free air convection -40°C ~ +85°C -55°C ~ +125°C 245°C (for 10 seconds) ≤95% >1,000,000 hours ISOLATION SPECIFICATIONS parameter isolation voltage isolation resistance isolation capacitance conditions/description flash tested for 1 minute test at 500 V dc Input/Output min 1500 1000 nom max units V dc MΩ PF 85 P in 0.50[0.020] 15.24[0.600] -Vin 7 NC 8 0V +Vo 9 10 23.86[0.939] 3.04[0.120] 1 2.54[0.100] - Vo 1 7 8 13.7 0[0 .539 ] ( Top View) 1 8.10 [0.7 13] 16 NC: No conne ction 7 8 2.54[0.100] 1.00[0.039] No te: Un it :m m [in ch] P in sectio n toler ances:±0 .10m m [ ±0.00 4inch] Gener al t olera nces:±0. 25m m [ ±0.01 0inch] 5 0.25[0.010] 1 +Vin 16 10 9 10 9 16 2.1 0[0. 083 ] 1.02[0.040] F OOT P RINT DE TA I LS 1 7.22 [0.6 78] (Side View) 2.5 4[0 .100 ] 8 .00[0 .31 5] 7 .50 [0.29 5] OUTLINE DIMENSIONS & FOOTPRINT 18.10[0.713] 1.40±0.20 [0.055±0.008] RECOMMENDED REFLOW PROFILE 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383 www.v-infinity.com page 3 of 3 date 05/2010 DESCRIPTION: dc-dc converter PART NUMBER: VWRAT2 - Input current Application Notes: Nominal input voltage range. The input current of the power supply must be sufficient - All of the VWRAT2-SMT Series have been tested according to the following recommended testing to the startup current (Ip) of the DC/DC module circuit before leaving the factory. This series should (Figure 2) be tested under load (Figure 1). If you want to Figure 2 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). Figure 1 +Vout +Vin Cout Cin DC DC Com - Output Load Cout -Vin -Vout In order to ensure the product operates efficiently and reliably, make sure the specified range of input voltage is not exceeded. - Recommended circuit It is best to test with full load and not to test without load. To No parallel connection or plug and play. 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. - NC Terminals General: Unless otherwise specified, NC terminals of all series Cin: 12V 100μF are used for converter's interior circuit connection, and are not allowed connection of any 24V 10μF to 47μF external circuit. Cout:see Table 1 Temperature Derating Curve Table 1 Dual Vout (VDC) 5 Cout (uF) 9 470 12 330 15 220 560 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383 www.v-infinity.com