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EBDW025A0B641HZ Datasheet(PDF) 8 Page - Lineage Power Corporation |
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EBDW025A0B641HZ Datasheet(HTML) 8 Page - Lineage Power Corporation |
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8 / 32 page  GE Data Sheet EBDW025A0B Barracuda™ Series; DC-DC Converter Power Modules 36-75Vdc Input; 12.0Vdc, 25.0A, 300W Output April 15, 2013 ©2012 General Electric Company. All rights reserved. Page 8 Test Configurations Note: Measure input reflected-ripple current with a simulated source inductance (LTEST) of 12 µH. Capacitor CS offsets possible battery impedance. Measure current as shown above. Figure 12. Input Reflected Ripple Current Test Setup. Note: Use a 1.0 µF ceramic capacitor and a 10 µF aluminum or tantalum capacitor. Scope measurement should be made using a BNC socket. Position the load between 51 mm and 76 mm (2 in. and 3 in.) from the module. Figure 13. Output Ripple and Noise Test Setup. Note: All measurements are taken at the module terminals. When socketing, place Kelvin connections at module terminals to avoid measurement errors due to socket contact resistance. Figure 14. Output Voltage and Efficiency Test Setup. Design Considerations Input Source Impedance The power module should be connected to a low ac-impedance source. A highly inductive source impedance can affect the stability of the power module. For the test configuration in Figure 12, a 100μF electrolytic capacitor, Cin, (ESR<0.7 at 100kHz), mounted close to the power module helps ensure the stability of the unit. If the module is subjected to rapid on/off cycles, a 330μF input capacitor is required. Consult the factory for further application guidelines. Safety Considerations For safety-agency approval of the system in which the power module is used, the power module must be installed in compliance with the spacing and separation requirements of the end-use safety agency standard, i.e., UL60950-1 2nd Ed., CSA C22.2 No. 60950-1 2nd Ed., and VDE0805-1 EN60950-1 2nd Ed. If the input source is non-SELV (ELV or a hazardous voltage greater than 60 Vdc and less than or equal to 75Vdc), for the module’s output to be considered as meeting the requirements for safety extra-low voltage (SELV), all of the following must be true: The input source is to be provided with reinforced insulation from any other hazardous voltages, including the ac mains. One VIN pin and one VOUT pin are to be grounded, or both the input and output pins are to be kept floating. The input pins of the module are not operator accessible. Another SELV reliability test is conducted on the whole system (combination of supply source and subject module), as required by the safety agencies, to verify that under a single fault, hazardous voltages do not appear at the module’s output. Note: Do not ground either of the input pins of the module without grounding one of the output pins. This may allow a non-SELV voltage to appear between the output pins and ground. The power module has safety extra-low voltage (SELV) outputs when all inputs are SELV. The input to these units is to be provided with a maximum 15 A fast-acting (or time-delay) fuse in the unearthed lead. The power module has internally generated voltages exceeding safety extra-low voltage. Consideration should be taken to restrict operator accessibility. LOAD CONTACT AND SUPPLY II CONTACT VI(+) VI(–) VO1 DISTRIBUTION LOSSES RESISTANCE IO VO2 |
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