rev. description features Designed to convert a wide input voltage range into an isolated regulated voltage, the VWRBT1-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 ·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 notes: 1. 1 of 3 date date 01/2008 DESCRIPTION: dc-dc converter PART NUMBER: VWRBT1 Series VWRBT1-D12-S3.3-SMT VWRBT1-D12-S5-SMT VWRBT1-D12-S9-SMT VWRBT1-D12-S12-SMT VWRBT1-D12-S15-SMT VWRBT1-D24-S3.3-SMT VWRBT1-D24-S5-SMT VWRBT1-D24-S9-SMT VWRBT1-D24-S12-SMT VWRBT1-D24-S15-SMT page page nominal (V dc) input voltage range (V dc) max. (V dc) 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 output voltage (V dc) 3.3 5 9 12 15 3.3 5 9 12 15 output current max. min. (mA) (mA) 303 200 111 83 67 303 200 111 83 67 30 20 11 8 6 30 20 11 8 6 efficiency typ. (%) 69 72 74 75 76 70 74 76 78 78 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 0.1 nom max 1 ±2 30 80 ±0.5 ±1.0 0.03 units W % mVpp mVpp % % %/°C KHz OUTPUT parameter 1W output power voltage accuracy 2 ripple noise line regulation load regulation temperature coefficient switching frequency notes: 2. refer to recommended circuit @ 20MHz Bandwidth @ 20MHz Bandwidth input voltage from low to high 10% to 100% full load refer to recommended circuit 100% load, nominal input ±1 20 40 ±0.2 ±0.5 300 3.3 V ±3% max. *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 503.612.2382 page 2 of 3 date 01/2008 DESCRIPTION: dc-dc converter PART NUMBER: VWRBT1 Series 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 case material MTBF conditions/description continuous 15°C typ., 30°C max. free air convection -40°C ~ +85°C -55°C ~ +125°C 245°C (for 10 seconds) ≤95% plastic (UL94-V0) >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 OUTLINE DIMENSIONS & RECOMMENDED LAYOUT PATTERN RECOMMENDED REFLOW PROFILE 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 units V dc MΩ page 3 of 3 date 01/2008 DESCRIPTION: dc-dc converter PART NUMBER: VWRBT1 Series - Input current Application Notes: Nominal input voltage range. The input - All of the VWRBT1-SMT Series have been tested current of the power supply must be sufficient 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 Vin Vout Cin DC DC - Output Load 0V GND 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 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 100μF 24V 10μF or 22μF Cout:100μF(typ) No parallel connection or plug and play. - 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. Table 1 Temperature Derating Curve 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382