Description

Interpoint™ FMCE-0828™ EMI filters are specifically designed

to reduce the reflected input ripple current of Interpoint high

frequency DC/DC converters. FMCE-0828 filters minimize elec-

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

and MHF+ Series of converters. These filters are intended for

use in 28 volt applications which must meet MIL-STD-461C

CE03 and CS01 and/or MIL-STD-461D, E and F CE102 and

CS101 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 and/or CE102 of ML-STD-461D, E and F, a

power line filter is needed. The FMCE-0828 EMI power line filters

reduce the common mode and differential noise generated by

the converters. FMCE-0828 filters reduce input ripple current by

60 dB, typical, at 500 kHz and 1 MHz when used in conjunction

with Interpoint DC/DC converters.

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 -0.5 to 80 V (0.5 ohm source impedance) will not

damage the filter but will be passed on to the converter:

The FMCE-0828 Series filters are rated for full power opera-

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

linearly to 80% at +135°C case temperature.

The maximum dc insertion loss at full load and nominal input

voltage represents a power loss of less than 3%.

FMCE-0828 filters are sealed in metal hermetic, down-leaded

packages non-flanged (case F5) or flanged (case J6). Also avail-

able in a side-leaded package (case U).

Features

attenuation to 60 dB at 500 kHz, typical

Operating temperature -55° to +125°C

•

Nominal 28 V input, -0.5 to 50 V operation

•

Transient rating -0.5 to 80 V for 1 second

•

Up to 8 A throughput current over the

•

full input voltage range of -0.5 to 50 V

Compliant to

•

MIL-STD-461C CE03

-

MIL-STD-461D, E and F CE102

-

MIL-STD-461C CS01

-

MIL-STD-461D, E and F CS101

-

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

•

and

Input (V)

28

Current (A)

8

Crane Aerospace & Electronics Power Solutions

FMce-0828 eMi input Filters

Crane Aerospace & Electronics

Power Solutions – Interpoint Products

10301 Willows Rd NE, Redmond, WA 98052

+1.425.882.3100•power@crane-eg.com

www.craneae.com/interpoint

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FMCE-0828 Rev J - 2011.09.08

28 Volt input – 8 aMp