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VWRBS2-D5-S24-SIP Datasheet(PDF) 3 Page - CUI INC |
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VWRBS2-D5-S24-SIP Datasheet(HTML) 3 Page - CUI INC |
3 / 3 page rev. page date DESCRIPTION: dc/dc converter 3 of 3 01/2008 20050 SW 112th Ave. Tualatin, Oregon 97062 phone phone 503.612.2300 fax fax 503.612.2382 PART NUMBER: VWRBS2 series Remote on/off control (see figure 1) ON: When control pin (CTRL pin 3) open or Ic < 0.5mA, converter will have normal output. OFF: With a 3-10mA input current (Ic) to pin 3, output will be disabled. Under no conditions should input current (Ic) exceed 20mA. The Value of R in Figure 1 can be derived as follows: R= Vc - Vd - 0.65V Vc= Voltage at control input Ic Vd= Diode (D1) voltage drop (.7V voltage drop typical ) Ic= Input Current (5mA recommended disable current) example 1 : Logic circuit — Apply 5V TTL logic signal on Vc to disable output R= 5V -0.7V -0.65V = 730 Ω Choose 720 Ω resistor .005A example 2 : Short Vin to Vc — Apply 12V on Vc to disable output R= 12V - 0.7V - 0.65V = 2130 Ω Choose 2K Ω resistor .005A - Application Notes: - All of the VWRBS2-SIP 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 2). - 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.; Operating Temp.( ) C Temperature Derating Graph - 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) Input Voltage (V) Input Voltage Range Ip - 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. External Capacitor Table Single Vout(VDC) Cout(uF) Dual Vout(VDC) Cout(uF) 3.3 2200 - - 5 1000 ±560 9 ±9 ±470 12 ±12 ±330 15 ±15 ±270 24 - - ±5 820 680 560 470 Table 2 |
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