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| rev. page page date date 1 of 3 01/2008 PART NUMBER: VWRBT1 Series DESCRIPTION: dc-dc converter description 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... 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: -40C~+85C MODEL nominal (V dc) input voltage range (V dc) max. (V dc) output voltage (V dc) output current max. min. (mA) (mA) efficiency typ. (%) 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 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 15 303 200 111 83 67 303 200 111 83 67 30 20 11 8 6 30 20 11 8 6 69 72 74 75 76 70 74 76 78 78 All specifications measured at TA=25C, 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 OUTPUT parameter 1W output power voltage accuracy 2 ripple noise line regulation load regulation temperature coefficient switching frequency notes: 2. conditions/description 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 3.3 V 3% max. min 0.1 nom 1 20 40 0.2 0.5 300 max 1 2 30 80 0.5 1.0 0.03 units W % mVpp mVpp % % %/C 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-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 date 2 of 3 01/2008 PART NUMBER: VWRBT1 Series DESCRIPTION: dc-dc converter 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 15C typ., 30C max. free air convection -40C ~ +85C -55C ~ +125C 245C (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 units V dc M OUTLINE DIMENSIONS & RECOMMENDED LAYOUT PATTERN RECOMMENDED REFLOW PROFILE 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 page date 3 of 3 01/2008 PART NUMBER: VWRBT1 Series DESCRIPTION: dc-dc converter Application Notes: - All of the VWRBT1-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 0V - Output Load In order to ensure the product operates efficiently and reliably, make sure the specified range of input voltage is not exceeded. GND 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 or 22F Cout:100F(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 |
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