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

FMD28-461

Manufacturer Part Number

FMD28-461

Description

EMI INPUT FILTERS 28 & 270 VOLT INPUT

Manufacturer

INTERPOINT [Interpoint Corporation Company]

Datasheet

1.FMD28-461.pdf (16 pages)

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INTERPOINT

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FMD28-461SL

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• –55°C to +125°C operation

• Up to 60 dB attenuation

• Compliant to

• Compatible with

DESCRIPTION

The FMD Series™ and FME Series™ EMI filters are specifically

designed to reduce the reflected input ripple current of Interpoint’s

high frequency DC/DC converters. FMD/FME filters minimize elec-

tromagnetic interference (EMI) for the MHE, MHL, MLP, MRH, MTO,

MHF, MHF+, MHV, MHD, MTR, MFL, MHP, and MFLHP Series.

These filters are intended for use in 28 or 270 volt applications

which must meet MIL-STD-461C, CE03 levels of conducted emis-

sions. 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 compo-

nents 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 applications. Common

mode noise occurs across stray capacitances between the

converter’s power train components and the baseplate (bottom of

the package) of the converter.

Where low noise currents are required to meet CE03 of MIL-STD-

461, a power line filter is needed. The FMD/FME Series of EMI

power line filters reduces the common mode and differential noise

generated by the converters. FMD/FME-461 filters reduce input

ripple current by as much as 60 dB at 500 kHz and 55 dB at 1 MHz

when used in conjunction with Interpoint’s DC/DC converters. See

Figures 8 and 9.

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. For the

NPUT

EATURES

at 500 kHz.

MIL-STD-461C, CE03

MIL-STD-704E

DC power bus

IPPLE AND

EMI

Size (max.): Case U2, FME all models; Case U1, FMD28-461SL and FMD270-461SL

Weight:

Screening: Standard, ES, or 883 (Class H).

3.005 x 1.505 x 0.400 inches (76.33 x 38.23 x 11.16 mm)

[FME models, shown in Case U2 (flanged, short leads). Also available:

Flanged – leads bent down (case V); Tabbed – leads bent up (case W), short

leads (case Y), and leads bent down (case Z).See Section B8, cases U2, V, W,

Y, and Z for dimensions and options.]

Case J4, FMD28-461

2.720 x 1.350 x 0.505 inches (69.09 x 34.29 x 12.83 mm)

See Section B8, cases J4, U1, U2, V, W, Y, and Z for dimensions.

77 grams typical cases U1, U2, V, W, Y, and Z; 55 grams typical case J4

See Section C2 for screening options, see Section A5 for ordering information.

28 & 270 V

EMI I

NPUT

OLT

best connection, mount the filter’s and converter’s baseplates on or

above a small ground plane. See Figure 5.

The transients listed below will not damage the filter but will be

passed on to the converter:

All FMD/FME-461 Series filters are rated for full power operation

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 4%.

FMD/FME-461 filters are sealed in metal hermetic side-leaded

packages. See Section B8, cases U1, U2, V, W, Y, and Z.

Additionally the FMD28-461 filter is available in a metal hermetic

down-leaded package (see Section B8, case J4).

The case of the filter must be connected to the case of the converter

through a low impedance connection to minimize EMI.

NSERTION

RANSIENTS

ACKAGING

AYOUT

PERATION OVER

ILTERS

NPUT

•

EQUIREMENTS

All filters: ±600 volts (50 ohm source

impedance) for up to 10 µs.

28 volt filter: ±100 volts (0.5 ohm source

impedance) for up to 100 ms.

270 volt filter: ±500 volts (independent of

source impedance) for up to 100 ms.

OSS

EMPERATURE

FMD/FME EMI FILTER

Input (V)

270

AND

NPUT

0.7 TO 15 AMP

MODELS

URRENT

OLTAGE

Current ( A)

15.0

7.0

0.7

1.5

B3-7

Related parts for FMD28-461

FMD28-461 Summary of contents

Page 1

... Compatible with MIL-STD-704E DC power bus Size (max.): Case U2, FME all models; Case U1, FMD28-461SL and FMD270-461SL 3.005 x 1.505 x 0.400 inches (76.33 x 38.23 x 11.16 mm) [FME models, shown in Case U2 (flanged, short leads). Also available: Flanged – leads bent down (case V); Tabbed – leads bent up (case W), short leads (case Y), and leads bent down (case Z) ...

Page 2

... STEADY STATE — POWER MAX. CURRENT DISSIPATION Tc=25°C — Tc=125°C — Note models = 0.5 Ω source impedance, 270 V models = independent of source impedance. B3-8 EMI I F NPUT ILTERS FMD28-461 FMD270-461 TYP MAX MIN TYP MAX 270 400 — 100 –500 — ...

Page 3

EMI I 100 H 0.55 H Positive Input Input Common F IGURE 37 H 1.8 mH Positive Input Input Common x2 F IGURE F NPUT ILTERS 100 H 1. FME28-461 1: FME28-461 S – T ...

Page 4

... The case ground connection between the filter and the converter should be as low an impedance as possible to minimize EMI. Direct contact of baseplate to chassis ground provides the lowest impedance. B3-10 EMI I F NPUT ILTERS 4.1 H 135 H 0 0.015 F 500V FMD28-461 3: FMD28-461 S – T CHEMATIC YPICAL 844 H 18.5 H 0.015 F 0.015 F FMD270-461 4: FMD270-461 S – T CHEMATIC YPICAL EMI FILTER ...

Page 5

... FME28-461V. FMD models: Case J4 (down-leaded) has no designator in the case/lead- option position. To designate case U1 (side-leaded) for the FMD place "SL" in the case/lead option position – FMD28-461SL. The 270 volt FMD is only available in the side-leaded case – FMD270-461SL. FMD/FME EMI FILTER 0 AMP ...

Page 6

FMD/FME EMI FILTER 0 AMP Typical Performance Curves: 25° nominal Vin, unless otherwise specified. NARROWBAND .015 0 FREQUENCY (MHz) Three paralleled and synchronized MFL2815D converters without filtering IGURE 0.1 1.0 10 FREQUENCY ...

Page 7

CASE CASE U 1.505 max (38.23) B8-36 C ASES Angled corner indicates pin one CASE U TOP VIEW (PIN SIDE) See Figures 55 and 56 for dimensions 3.005 (76.33) max. Note: Pins are shown for Case U1. Materials Header Cold ...

Page 8

CASE U MOR Series and FME EMI Filters: Screening – Standard, ES, or 883 Also available and Z cases (Figures 57 - 60) Pin Length Angled corner 0.30 0.05 indicates pin one. (7.6 1.3) 1.380 (35.05) ...

Page 9

MOR Series and FME EMI Filters: Screening – Standard, ES, or 883 Also available in U2 and Z cases (Figures 56 and 58 - 60) *Requires case option designator added to model number: MOR2805SV See Section A5, Ordering ...

Page 10

CASE W MOR Series and FME EMI Filters: Screening – Standard, ES, or 883 Also available in U2 and Z cases (Figures 56, 57, 59 and 60) *Requires case option designator added to model number: MOR2805SW See Section ...

Page 11

PIN-SIDE VIEW CASE Y* (Tabbed case, straight leads) MOR Series and FME EMI Filters: Screening – Standard, ES, or 883 Also available in U2 and Z casee (Figures 56, 57, 58 and 60) 0.250 (6.35) Typ. 1.750 (44.45) ...

Page 12

CASE Z MOR Series and FME EMI Filters: Screening – Standard, ES, or 883 Also available in U2 and W cases (Figures 56, 57, 58 and 59) *Requires case option designator added to model number: MOR2805SZ 0.250 (6.35) ...

Page 13

... MFL Series and MHP Series: Screening – Standard 883 MFLHP Series, FMD270 EMI Filter, and FMD28-461SL EMI Filters: Screening – Standard or ES SMFL, SMFLHP, SMHP, and SSP Series; SFCS, and SFME EMI Filters: Screening – Standard, Class HUM70 Module and LCM Module: Screening – Standard or ES Angled corner 0 ...

Page 14

CASE J Flange Thickness: Cases J1 and J5 Case J2 Cases J3 and J4 Materials Header Case J1 Cases Cover Case J1 Case Pins #52 alloy (all cases) Case J1 Cases ...

Page 15

... Flanged cases: Designator required in Case Option position of model number. FMD28-461 EMI Filter (down-leaded): Screening – Standard or ES Solder Seal 1.173 (29.79 0.040 dia. (1.02) 0.673 (17.09) Solder Tip-off 0.173 (4.39) 0.000 C ASES BOTTOM VIEW CASE J4 (Rev B) Squared corner and dot on top of case indicate pin one. ...

Page 16

QA SCREENING 125°C PRODUCTS TEST (125°C Products) PRE-CAP INSPECTION Method 2017, 2032 TEMPERATURE CYCLE (10 times) Method 1010, Cond. C, -65°C to 150°C Method 1010, Cond. B, -55°C to 125°C CONSTANT ACCELERATION Method 2001, 3000 g Method 2001, 500 g ...

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