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V48SC12007NRFA Datasheet(PDF) 7 Page - Delta Electronics, Inc. |
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V48SC12007NRFA Datasheet(HTML) 7 Page - Delta Electronics, Inc. |
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7 / 17 page  DS_V48SC12007_04262016 7 1 MHz 10 MHz 150 kHz 30 MHz 10.0 20.0 30.0 40.0 50.0 60.0 70.0 0.0 80.0 dBμV Limits 55022MQP 55022MAV Transducer 8130 Traces PK+ AV Figure 15 - EMI test Safety Considerations The power module must be installed in compliance with the spacing and separation requirements of the end- user’s safety agency standard, i.e., UL60950-1, CSA C22.2 NO. 60950-1 2nd and IEC 60950-1 2nd : 2005 and EN 60950-1 2nd: 2006+A11+A1: 2010, if the system in which the power module is to be used must meet safety agency requirements. Basic insulation based on 75 Vdc input is provided between the input and output of the module for the purpose of applying insulation requirements when the input to this DC-to-DC converter is identified as TNV-2 or SELV. An additional evaluation is needed if the source is other than TNV-2 or SELV. When the input source is SELV circuit, the power module meets SELV (safety extra-low voltage) requirements. If the input source is a hazardous voltage which is greater than 60 Vdc and less than or equal to 75 Vdc, for the module’s output to meet SELV requirements, all of the following must be met: DESIGN CONSIDERATIONS Input Source Impedance The impedance of the input source connecting to the DC/DC power modules will interact with the modules and affect the stability. A low ac-impedance input source is recommended. If the source inductance is more than a few μH, we advise adding a 100 μF electrolytic capacitor (ESR < 0.7 Ω at 100 kHz) mounted close to the input of the module to improve the stability. Layout and EMC Considerations Delta’s DC/DC power modules are designed to operate in a wide variety of systems and applications. For design assistance with EMC compliance and related PWB layout issues, please contact Delta’s technical support team. An external input filter module is available for easier EMC compliance design. Below is the reference design for an input filter tested with V48SC120XXX to meet EN55022 (VDE0878) class B (both q. peak and average) Schematic and Components List Figure 14 - EMI test schematic 1. C1=C2=C3=2.2uF/100V 2. C5=C6=C7=C8=10nF; 3. C4=100uF/100V. Test Result: At T = +25 C , Vin = 48 V and full load Blue line is quasi peak mode;Green line is average mode. |
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