FMCE-0828 Datasheet, PDF (1/11 Pages) Interpoint Corporation Company – Attenuation to 60 dB at 500 kHz, typical MIL-STD-461C CE03

Crane Aerospace & Electronics Power Solutions
FMCE-0828 EMI Input Filters
28 Volt input – 8 Amp
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
Input Voltage
and Current
Input (V)
28
Current (A)
8
Description
The FMCE-0828™ EMI filters are specifically designed to reduce
the reflected input ripple current of Interpoint’s high frequency
DC/DC converters. FMCE-0828 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.
Input Ripple and EMI
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’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.
Transients
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:
Operation over Temperature
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.
Insertion Loss
The maximum dc insertion loss at full load and nominal input
voltage represents a power loss of less than 3%.
Packaging
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).
Crane Aerospace & Electronics
Electronics Group (Interpoint Brand)
PO Box 97005•Redmond WA 98073-9705
425.882.3100 • [e-mail]
www.interpoint.com
Page 1 of 11
FMCE-0828 Rev E - 20100427