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LAW005F Fiches technique(PDF) 5 Page - Lineage Power Corporation |
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LAW005F Fiches technique(HTML) 5 Page - Lineage Power Corporation |
5 / 8 page Lineage Power 5 Data Sheet LAW005-Series Power Modules; dc-dc Converters: April 2008 36 Vdc to 75 Vdc Input; 5 W Test Configurations 1-0304 Note: Input reflected-ripple current is measured with a simulated source impedance of 12 µH. Capacitor Cs offsets possible battery impedance. Current is measured at the input of the module. Figure 1. Input Reflected-Ripple Test Setup 1-0305 Note: Use a 0.1 µF ceramic capacitor. Scope measurement should be made using a BNC socket. Position the load between 50.8 mm and 76.2 mm (2 in. and 3 in.) from the module. Figure 2. Peak-to-Peak Output Noise Measurement Test Setup 1-0306 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 3. Output Voltage and Efficiency Measurement Test Setup 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., UL 60950, CSA C22.2 No. 60950-00, and VDE 0805 (IEC60950). If the input source is non-SELV (ELV or a hazardous voltage greater than 60 Vdc and less than or equal to 75 Vdc), for the module's output to be considered meeting the requirements of safety extra-low voltage (SELV), all of the following must be true: n The input source is to be provided with reinforced insulation from any other hazardous voltages, includ- ing the ac mains. n One VI pin and one VO pin are to be grounded, or both the input and output pins are to be kept floating. n The input pins of the module are not operator acces- sible. n Another SELV reliability test is conducted on the whole system, as required by the safety agencies, on the combination of supply source and the subject module 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 extra-low voltage (ELV) outputs when all inputs are ELV. The input to these units is to be provided with a maxi- mum 5 A normal-blow fuse in the ungrounded lead. Feature Description Output Overvoltage Protection (single output mod- ules only) Output overvoltage protection is not a feature on dual output modules. For single output modules, the output overvoltage protection consists of a Transient Voltage Suppressor (TVS) diode across the output terminals. During an ouput overvoltage fault condition, this diode protection clamps the output within the voltages shown in Table 5 TO OSCILLOSCOPE CS 220 µF IMPEDANCE < 0.1 Ω @ 20 ˚C, 100 kHz VI(+) VI(-) LTEST BATTERY 12 µH VO (+) VO (–) RESISTIVE LOAD SCOPE 0.1 µF COPPER STRIP VI(+) VI(-) VO(+) VO(-) II IO SUPPLY CONTACT RESISTANCE CONTACT AND DISTRIBUTION LOSSES LOAD η VO + () –VO(–) []IO VI + () –VI(–) []II ------------------------------------------------- ⎝⎠ ⎛⎞ x 100 =% |
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