FMA-461

FM-461 INTERPOINT | Alldatasheet

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Technical content

Input (V) 0 - 40 0 - 40 0 - 40 Current ( A) 1.75 3.8 5.0

DESCRIPTION

The FM-461, FMA-461, and FMB-461 EMI filter modules have been specifically designed to reduce the input line reflected ripple current of Interpoint’s MTO, MTW, MHE, MLP, and MFW Series of DC/DC converters. They are intended for use in applications of high frequency (100 kHz) switch-mode DC/DC converters which must meet MIL-STD-461C levels of conducted power line noise. These filters are built using thick-film hybrid technology and are sealed in metal packages for military, aerospace, and other high- reliability applications. See Section B8, cases H3, H5, K4, and K6 for dimensions. See Section C2 for screening options. MIL-STD NOISE M ANAGEMENT When used in conjunction with Interpoint’s DC/DC converters (see connection diagram, Figure 2), the input ripple current will be reduced by 40 dB within the frequency band of 100 kHz to 50 MHz. This gives the filter/converter combination a performance which exceeds the CE03 test limit of MIL-STD-461C. The CE03 perform- ance of a model MHE2805S converter with and without the FM-461 filter is shown in Figures 6 and 7. FILTER O PERATION A fast-reacting (1 picosecond) transient suppressor clamps the input voltage at approximately 47 V, protecting the DC/DC converter from line induced transients. The filters are rated to operate, with no degradation of performance, over the temperature range of –55°C to +85°C (as measured at the baseplate). Above 85°C, input voltage and current must be derated as specified in “Derating” on the following page. The maximum power dissipation of the filters at maximum input current represents a power loss of less than 3% at typical input voltage. LAYOUT R EQUIREMENTS The case of the filter must be connected to the case of the converter through a low impedance connection to minimize EMI. EMI I NPUT FILTERS

28 VOLT INPUT

FM-461, FMA-461 AND FMB-461 EMI FILTERS

1.75 TO 5 AMP

FEATURES

• –55°C to +85°C operation
• 0 to 40 VDC volt input
• Up to 40 dB attenuation 110 kHz to 50 MHz
• Transient suppression
• Compliant to MIL-STD-461C, CE03 Size (max.): Non-flanged case H3 or H5 Flanged case K4 or K6 See Section B8, cases H3, H5, K4, and K6, for dimensions. *Height varies depending on model. Weight: Maximum – FM-461 38 grams, FMA-461 42 grams, FMB-461 43 grams Screening: Standard or ES. See Section C2 for screening options, see Section A5 for ordering information.

DERATINGABSOLUTE MAXIMUM RATINGS Input Voltage

• 0 to 40 VDC continuous Lead Soldering Temperature (10 sec per lead)
• 300°C Storage Temperature Range (Case)
• –55°C to +135°C Isolation
• 100 megohm minimum at 500 V
• Any pin to case (except case pin) B5-4 FM-461 EMI FILTER
• 0 to 40 VDC continuous Case Operating Temperature (Tc)
• –55°C to +85°C full power
• –55°C to +125°C absolute Electrical Characteristics: 25°C Tc, nominal Vin, unless otherwise specified. EMI I NPUT FILTERS FM-461 FMA-461 FMB-461 PARAMETER CONDITION MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS INPUT VOLTAGE CONTINUOUS 0 28 40 0 28 40 0 28 40 VDC INPUT CURRENT DC — — 1.75 — — 3.8 — — 5.0 A RIPPLE — — 0.67 — — 1.0 — — 1.2 A rms NOISE REJECTION 15 kHz - 50 MHz — 40 — — 40 — — 40 — dB DC RESISTANCE CAPACITANCE ANY PIN TO CASE 1900 — 2200 3700 — 4400 6450 — 8000 pF OUTPUT VOLTAGE 1 STEADY STATE V OUT = VIN - IIN(RDC ) VDC OUTPUT CURRENT STEADY STATE — — 1.75 — — 3.8 — — 5.0 A POWER DISSIPATION MAX. CURRENT — — 1.3 — — 1.6 — — 2.5 W Note 1. Typical applications result in Vout within 2% of Vin. Input Voltage Derate linearly from 100% at 85°C case to the 33 VDC at 125°C case Input Ripple Current Derate linearly from 100% at 85°C case to the following at 125°C case 270 mA rms FM-461 400 mA rms FMA-461 480 mA rms FMB-461 DC Input and Output Current Derate linearly from 100% at 85°C case to the following at 125°C case 750 mA FM-461

1.7 A FMA-461

1.7 A FMB-461

x2 0.1 mF 0.01 mF 0.001 mF 4.7 mF 150 V 47 pF 1000 pF 50 V 1000 pF 500 V Positive Input Input Common Positive Output Output Common FM-461 469 mH 2.4 mH FIGURE 1: SCHEMATIC

+Vin +Vout Input Common Output Common Case R L R L EMI FILTER DC/DC CONVERTER +Vin +Vout Input Common Output Common Case Chassis ground Multiple units allowed up to rated output current of filter The case ground connection should be as low an impedance as possible to minimize EMI. Direct contact of baseplate to chassis ground provides the lowest impedance. FIGURE 4: CONNECTION D IAGRAM x3x2 0.1 mF 0.01 mF 0.001 mF 4.7 mF 150 V 47 pF 1000 pF 50 V 1000 pF 500 V Positive Input Input Common Positive Output Output Common FMA-461 2.4 mH>150 mH FIGURE 2: SCHEMATIC 4.7 mF 3300 pF 500 V Positive Input Input Common Positive Output Output Common FMB-461 3.5 mH 9.4 mF 0.65 V 3.5 mH 50 V 47 pF 500V P6KE47 18.8 mF FIGURE 3: SCHEMATIC

Typical Performance Curves: 25°C Tc , nominal Vin, unless otherwise specified. .015 .1 1 10 50 EMISSION LEVEL (dmA) FREQUENCY (MHz) CE03 Limit FIGURE 6 .015 .1 1 10 5 0 EMISSION LEVEL (dmA) FREQUENCY (MHz) CE03 Limit FIGURE 7 FM-461 EMI FILTER

1.75 YO 5 AMP

MHE Converter Without Filter MHE Converter With FM-461 EMI Filter PIN OUT Squared corner and dot on top of package indicate pin one. BOTTOM VIEW FM-461, FMA-461, FMB-461 Dotted line outlines flanged package option. FMB - 461 F / ES Base Model MIL-STD-461 reference Screening FM, FMA, or FMB (Standard screening has no designator in this position) Case Option (Non-flanged case has no designator in this position) MODEL NUMBERING KEY See Section B8, cases H3, H5, K4, and K6, for dimensions. Pin Designation

1 Positive Input

2 Positive Output

3 Case Ground

4 Output Common

5 Input Common

FIGURE 5: PIN O UT 26221-001-DTS Rev A DQ# 14006 All technical information is believed to be accurate, but no responsibility is assumed for errors or omissions. Interpoint reserves the right to make changes in products or specifications without notice. Copyright © 1990 - 1999 Interpoint. All rights reserved.

0.160 (4.06) 0.960 (24.38) Solder Seal Solder Tip-off 0.000 0.040 dia (1.02) 0.000 0.000 0.25 +0.05/-0.00 (6.4 +1.3/-0.0) 0.560 (14.22) 0.255 (6.48) 1.855 (47.12) 2.110 (53.59) 1.120 (28.45) FM-461 EMI Filter: Screening – Standard of ES BOTTOM VIEW CASE H3 0.417 max (10.59) Squared corner and dot on top of case indicate pin one. FIGURE 31: CASE H3

Cold Rolled Steel/Nickel/Gold Cases K4 - K8 Cold Rolled Steel/Nickel/Tin Cover Case K1 - K3 Kovar/Nickel Case K4 - K8 Cold Rolled Steel/Nickel/Tin Pins #52 alloy (all cases) Case K1, K2, and K3 (except MHV Series Single and Dual) ceramic seal Cases K4 - K8 and MHV Series Single and Dual (K3) compression glass seal Case dimensions in inches (mm) Tolerance–0.005 (0.13) for three decimal places –0.01 (0.2) for two decimal places unless otherwise specified CASE K BOTTOM VIEW See Figures 42 - 48 for pin configuration 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. Flange Thickness: Cases K1, K2, K3 and MLP Series (K5) 0.060 (1.52) Cases K4, K5 (except MLP Series), K6, K7, and K8 1.125 max (28.58) 2.910 max (73.91) Dot on top of case indicates pin one FIGURE 41: CASE K M AXIMUM D IMENSIONS

85°C PRODUCTS TEST (85°C Products excluding HR products) STANDARD /ES PRE-CAP INSPECTION Method 2017 yes yes TEMPERATURE CYCLE (10 times) Method 1010, Cond. B, -55°C to 125°C no yes CONSTANT ACCELERATION Method 2001, 500 g no yes BURN-IN 96 hours at 70°C ambient (typical) no yes FINAL ELECTRICAL TEST MIL-PRF-38534, Group A Subgroups 1 and 4: +25°C case yes yes HERMETICITY TESTING Fine Leak, Method 1014, Cond. A no yes Gross Leak, Method 1014, Cond. C no yes Gross Leak, Dip (1 x 10-3) yes no FINAL VISUAL INSPECTION Method 2009 yes yes Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. MFW Series MTW Series MHE/MLP Series MHL Series MRH Series MTO Series MSR Series DCH Series FM/FMA/FMB EMI Filters MSF EMI Filter 85°C PRODUCTS Applies to the following products: