VWRBT2

rev. page page date date 1 of 3 05/2008 PART NUMBER: VWRBT2 Series DESCRIPTION: dc-dc converter d escription Designed to convert a wide input voltage range into an isolated regulated voltage, the VWRBT2-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... features ·wide (2:1) input range ·regulated ·single 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 nominal (V dc) input voltage range (V dc) max. (V dc) output voltage (V dc) output current max. min. (mA) (mA) efficiency typ. (%) VWRBT2-D12-S3.3-SMT VWRBT2-D12-S5-SMT VWRBT2-D12-S9-SMT VWRBT2-D12-S12-SMT VWRBT2-D12-S15-SMT VWRBT2-D24-S3.3-SMT VWRBT2-D24-S5-SMT VWRBT2-D24-S9-SMT VWRBT2-D24-S12-SMT VWRBT2-D24-S15-SMT notes: 1. 12 12 12 12 12 24 24 24 24 24 9.0~18.0 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 18.0~36.0 22 22 22 22 22 40 40 40 40 40 3.3 5 9 12 15 3.3 5 9 12 15 500 400 222 167 133 500 400 222 167 133 50 40 22 16 13 50 40 22 16 13 70 74 76 78 79 71 76 78 79 80 All specifications measured at TA=25°C, humidity 1,000,000 hours ISOLATION SPECIFICATIONS parameter isolation voltage isolation resistance conditions/description flash tested for 1 minute test at 500 V dc min 1500 1000 nom max units V dc MΩ OUTLINE DIMENSIONS & RECOMMENDED LAYOUT PATTERN 23.9 [0.94] 7.9 [0.31] 8.2 [0.32] 15.0 [0.59] Side View Pin Connections 12.7 [0.50] 17.5 [0.69] PIN 1 7 8 9 10 18.5 [0.73] FUNCTION -Vin NC NC +Vout -Vout +Vin 1.0 [0.04] 16 13.7 [0.54] 0.5 [0.02] 10 9 0.8 [0.03] Top View 1 78 15.2 [0.60] 2.5 [0.10] PCB LAYOUT 16 3.0 [0.12] 15.2 [0.60] 2.5 [0.10] Note: Unit: mm[inch]; Tolerance: ±0.25mm; All Pins on a 2.54mm . RECOMMENDED REFLOW PROFILE 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 phone fax 2.0 [0.08] page date 3 of 3 05/2008 PART NUMBER: VWRBT2 Series DESCRIPTION: dc-dc converter Application Notes: - All of the VWRBT2-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). - 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) Figure 2 Figure 1 +Vin Cin +Vout DC DC -Vout - Output Load In order to ensure the product operates efficiently and reliably, make sure the specified range of input voltage is not exceeded. -Vin - 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. No parallel connection or plug and play. - NC Terminals General: Cin: 12V 100μF 24V 10μF or 22μF Cout:100μF(typ) 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. Temperature Derating Curve Table 1 3.3 5 9 12 15 2200 1000 330 150 120 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 phone fax