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FMGA-461 Folha de dados(PDF) 3 Page - Interpoint Corporation Company |
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FMGA-461 Folha de dados(HTML) 3 Page - Interpoint Corporation Company |
3 / 14 page FMGA SerieS™ eMi Filter The Interpoint surface mount FMGA-461 EMI filter has been designed to work with Interpoint surface mount MGA Series™ and MGH Series™ dc-dc converters. Multiple MGA or MGH converters can be operated from a single FMGA filter provided the total power line current does not exceed the filter’s maximum current rating. The FMGA filter will reduce the converter’s power line reflected ripple current to within the limit of MIL-STD-461C, Method CE03 as shown in Figure 10 through Figure 14 on page 10. The filter uses only ceramic capacitors for reliable high- temperature operation. COnneCtiOn anD OperatiOn Where more than one pin has the same designation (e.g. pins 7, 8, and 9 are Positive Output), all of those pins must be connected for output performance to meet the specifications. The MGA Series has an internal 2 µF capacitor on its input terminals and the MGH Series has an internal 0.47 µF capacitor across its input power terminals. See Figure 3 on page 4. When the MGA or MGH converters are used with the FMGA filter, this capacitor becomes part of the filter and forms its final LC output section. When 2 or 3 MGA or MGH converters are used with a single filter, this capacitor becomes larger, improving the rejection versus frequency. transient Damping The optional damping circuit shown in Figure 4 on page 4 will prevent filter overshoot caused by 80 volt transients with rise times of less than 200 microseconds. The damping circuit can be used with a 1.50 Ω resistor in series with the filter’s positive input where the additional line loss can be tolerated. For transients with rise times of greater than 200 microseconds, there is no overshoot and the damping circuit is not required. surFaCe mOunt paCkage The FMGA EMI filter can be surface mounted with pick-and- place equipment or manually. It is recommended that the case be attached with flexible epoxy adhesive or silicone which is thermally conductive (>1 watt /meter/°K). Internal components are soldered with SN96 (melting temperature 221°C) to prevent damage during reflow. Maximum reflow temperature for surface mounting the FMGA filter is 220°C for a maximum of 30 seconds. SN60, 62, or 63 are the recommended types of solder. Hand soldering should not exceed 300°C for 10 seconds per pin. The hermetically sealed metal cases are available in two different lead configurations. For case dimensions and options, see Case B ,Figure 16 on page 12 and the solder pad layout of Figure 17 on page 12. layOut requirements The case of the filter must be connected to the case of the converter through a low impedance connection to minimize EMI. Crane Aerospace & Electronics Power Solutions FMSA/FMGA eMi input Filters 28 VOlt iNput - 0.8 AMp www.craneae.com/interpointcom Page 3 of 14 FMSA/FMGA Rev AA - 2015.12.15 |
Nº de peça semelhante - FMGA-461_15 |
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Descrição semelhante - FMGA-461_15 |
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