FMD28-461_10 INTERPOINT [Interpoint Corporation Company], FMD28-461_10 Datasheet

FMD28-461_10

Manufacturer Part Number

FMD28-461_10

Description

Attenuation to 50 dB at 500 kHz Up to 7 A throughput current

Manufacturer

INTERPOINT [Interpoint Corporation Company]

Datasheet

1.FMD28-461_10.pdf (8 pages)

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Crane Aerospace & Electronics

Electronics Group (Interpoint Brand)

PO Box 97005 • Redmond WA 98073-9705

425.882.3100 • power@crane-eg.com

www.interpoint.com

Features

Description

The FMD28 Series™ EMI filters are specifically designed to

reduce the reflected input ripple current of Interpoint’s high

frequency DC/DC converters. FMD filters minimize electro-

magnetic interference (EMI) for the MOR, MFL, MTR, MHV,

MHF+, MHF, MTO and MHE Series of converters. These filters

are intended for use in 28 volt applications which must meet

MIL-STD-461C CE03 levels of conducted emissions. One filter

can be used with multiple converters up to the rated output

current of the filter.

Switching DC/DC converters naturally generate two noise

components on the power input line: differential noise and

common mode noise. Input ripple current refers to both of these

components. Differential noise occurs between the positive input

and input common. Most Interpoint converters have an input filter

that reduces differential noise which is sufficient for many appli-

cations. Common mode noise occurs across stray capacitances

between the converter’s power train components and the base-

plate (bottom of the package) of the converter.

Where low noise currents are required to meet CE03 of

MIL-STD-461C a power line filters reduces the common mode

and differential noise generated by the converters. FMD28-

461 filters reduce input ripple current by as much as 50 dB

at 500 kHz when used in conjunction with Interpoint’s DC/DC

converters.

nput

attenuation to 50 dB at 500 kHz

•

Operating temperature -55° to +125°C

Nominal 28 V input, 0 to 50 V operation

Transient rating to 100 V for 100 ms

Up to 7 A throughput current

Compliant to MIL-STD-461C, CE03

Compatible with MIL-STD-704 A-E 28 VDC power bus

Ipple and

eMI

FMD28-461 eMi input Filters

28 Volt input – 7 aMp

FMD28 Rev C - 20100226

Page 1 of 8

Place the filter as close as possible to the converter for optimum

performance. The baseplates of the filter and the converter

should be connected with the shortest and widest possible

conductors.

A transient of 100 V for up to 100 ms with a 0.5 ohm source

impedance will not damage the filter.

The FMD28-461 Series filters are rated for full power opera-

tion from -55°C to +125°C case temperature. Current is derated

linearly to zero at +135°C case temperature.

The maximum dc insertion loss at full load and nominal input

voltage represents a power loss of less than 1.3%.

FMD28-461 filters are sealed in metal hermetic, down-leaded

packages (case J4). Also available in a side-leaded package

(case U).

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Related parts for FMD28-461_10

FMD28-461_10 Summary of contents

Page 1

... A transient of 100 V for up to 100 ms with a 0.5 ohm source impedance will not damage the filter. O peRatIOn OveR The FMD28-461 Series filters are rated for full power opera- tion from -55°C to +125°C case temperature. Current is derated linearly to zero at +135°C case temperature. I ...

Page 2

... Weight (maximum) • Case J4: 55 grams typical • Case U: 77 grams typical screening FMD28 is offered with 125°C Standard and /ES, non-QML screening. See Standard and /ES (non-QML) screening tables for more information on page 8. EMI FILTER DC/DC CONVERTER +Vin +Vin ...

Page 3

... MoDels Angled corner and cover marking indicate pin one Page FMD28 Rev C - 20100226 Crane Aerospace & Electronics Power Solutions Squared corner and dot on top of package indicate pin one BOTTOM VIEW FMD28-461 See case J4 for dimensions. 5 ...

Page 4

... U (case option is SL). MoDel selection , enter One selectiOn frOm each categOry tO determine the mOdel number -461 Mil-stD-461 reFerence “-461” is the only available selection Page FMD28 Rev C - 20100226 Crane Aerospace & Electronics Power Solutions _______ / ______ case/leaD screening 1 ...

Page 5

... Page FMD28 Rev C - 20100226 Crane Aerospace & Electronics Power Solutions FMD28-461 MIN TYP MAX unIts VDC -100 — 100 — ...

Page 6

... FMD28-461 eMi input Filters – cases Solder Seal Solder Tip-off Case dimensions in inches (mm) Tolerance ±0.005 (0.13) for three decimal places ±0.01 (0.3) for two decimal places unless otherwise specified CAUTION Heat from reflow or wave soldering may damage the device. Solder pins individually with heat application not exceeding 300°C for 10 seconds per pin. ...

Page 7

... FMD28-461 eMi input Filters – cases *Does not require designator in Case Option position of model number. Angled corner indicates pin one. 1.505 (38.23) max. 1.380 (35.05) 1.250 (31.75) 1.050 (26.67) 0.850 (21.59) 0.650 (16.51) 0.450 (11.43) 0.250 (6.35) 0.120 (3.05) 0.000 Case dimensions in inches (mm) Tolerance ±0.005 (0.13) for three decimal places CAUTION Heat from reflow or wave soldering may damage the device ...

Page 8

... FMD28-461 EMI Input Filters, FMD28 Rev C - 20100226. This revision supersedes all previous releases. All technical information is believed to be accu- rate, but no responsibility is assumed for errors or omissions. Interpoint reserves the right to make changes in products or specifications without notice. ...

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