Description

The FMCE-1528™ EMI filters are specifically designed to reduce

the reflected input ripple current of Interpoint’s high frequency

DC/DC converters. FMCE-1528 filters minimize electromagnetic

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 MIL-STD-461, a

power line filter is needed. The FMCE-1528 EMI power line filters

reduce the common mode and differential noise generated by the

converters. FMCE-1528 filters reduce input ripple current by as

much as 70 dB at 500 kHz and 1 MHz when used in conjunction

with Interpoint’s 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 volts (0.5 ohm source impedance) will

not damage the filter but will be passed on to the converter:

The FMCE-1528 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 4%.

FMCE-1528 filters are sealed in metal hermetic side-leaded

packages. See cases U, V, W, Y, and Z.

Features

attenuation to 70 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 15 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)

15

Crane Aerospace & Electronics Power Solutions

FMce-1528 eMi input Filters

Crane Aerospace & Electronics

Electronics Group (Interpoint Brand)

POBox97005•RedmondWA98073-9705

425.882.3100•power@crane-eg.com

www.interpoint.com

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FMCE-1528 Rev E - 20100615

28 Volt input – 15 aMp