Crane Aerospace & Electronics Power Solutions FM-704A EMI Input Filter and Transient Suppression Module 28 Volt input – 40 WATT Features Active transient suppression Undervoltage lockout • -55°C to +125°C operation • 16 to 40 VDC input • Up to 60 dB attenuation at 500 kHz. model • Inhibit function FM-704A • Compliant to MIL-STD-461A-F 40 WATT Description Internal Power Dissipation MIL-STD Noise Management Figure 9 illustrates the maximum allowed internal dissipation for the FM-704A filter. To calculate watts dissipated, subtract 40 volts from the transient (VT) to determine the maximum voltage across the filter and multiply the result by the current (the filter’s output power, Pout divided by 40): W = (VT - 40) x Pout /40 The Interpoint™ FM-704A™ EMI Filter and Transient Suppression Module combines EMI filtering and transient protection to handle the demanding requirements of military, aerospace and industrial applications. As an EMI filter the FM-704A filter reduces the reflected ripple current from DC/DC switching converters. As a protection module, it suppresses input transients on the power bus to protect the converter and other downstream components. When used in conjunction with Interpoint converters, the FM-704A EMI filter reduces reflected input ripple current by a minimum of 60 dB at 500 kHz and 55 dB at 1 MHz (see Electrical Characteristics table on page 5 and Figures on page 6). This attenuation gives the converter/filter combination performance exceeding MIL-STD-461C’s CE03 test. Although the FM-704A filter effectively attenuates the ripple generated by switching converters, it will not suppress RF applied to its input terminals. Temperature Operation FM-704A filters are rated to operate from -55°C to +125°C baseplate temperature. To meet MIL-STD-1275A and MIL-STD704A requirements, derate output power linearly from 40 watts at 105°C to 20 watts at 125°C. See Figure 9. Protection To provide protection for itself and converters, the FM-704A filter blocks transients as required by the following standards: MIL-STD-704A Panavia SP-P-90001 MIL-STD-461A through F British Standard BS3G100 MIL-STD-1275 Civil Aircraft D0160B Refer to the Electrical Characteristics table on page 5 for more information. Reverse polarity spikes of up to 100 V will not damage the filter, however the spikes will not be blocked by the filter. Crane Aerospace & Electronics Power Solutions - Interpoint Products 10301 Willows Road NE, Redmond, WA 98052 +1.425.882.3100 • [email protected] www.craneae.com/interpoint To keep internal power dissipation to safe operating levels, the input current should never exceed 2.5 amps at 16 Vin or 1.0 amp at 40 Vin. When the FM-704A filter is used with PWM (Pulse Width Modulated) converters, Iline will vary as Power / Vline and 2.5 amps maximum at 16 Vin will reduce to approximately 1 amp maximum at 40 Vin. The maximum value allowed may be less than 1 amp as determined by line transients and the safe operating area of Figure 9. For example, with 20 watts output and a transient of 400 volts: W = (400 - 40) x 20/40 = 180 The curve of Figure 9 shows that 180 W can be dissipated for up to 4 milliseconds. Features The inhibit function allows the FM-704A filter to be used as a high-side switch. When the inhibit terminal (pin 6) is left open or pulled high, the FM-704A filter is enabled. When the terminal is grounded, the filter shuts off output power. A soft start function helps reduce inrush current and start-up overshoot when the filter is initially powered or when it is released from the inhibit mode. An undervoltage lockout feature shuts off output power when input voltage falls below a specified level. Refer to Figure 8 for more information. Layout Requirements To minimize EMI, common mode noise, the case of the filter must be connected to the case of the converter through a low impedance connection. Page 1 of 9 FM-704A Rev C - 2011.11.07 Crane Aerospace & Electronics Power Solutions FM-704A EMI Input Filter and Transient Suppression Module 28 Volt input – 40 WATT Operating Conditions and characteristics Inhibit •Active low (output disabled) ‣‣Active low 0.8 V max ‣‣Inhibit pin will source 0.6 mA max. •Active high (output enabled) ‣‣Open collector ‣‣Open pin voltage 5.5 V max. Input Voltage Range •16 to 40 VDC continuous for 40 W load Lead Soldering Temperature (10 sec per pin) •300°C Storage Temperature Range (Case) •-65°C to +150°C Case Operating Temperature (TC) •-55°C to +125°C full power Derating Output Power/Current •Linearly from 40 W at 105°C to 20 W at 125°C to meet MIL-STD-1275A (AT) and MIL-STD-704A Capacitance •0.017 µF max, any pin to case mechanical and environmental Size (maximum) •2.910 x 1.125 x 0.400 inches (73.91 x 28.58 x 10.16 mm) •See case K1 for dimensions. Undervoltage lockout •7 VDC min, 15 VDC max Weight (maximum) •40 grams typical Isolation (TC = 25°C) •100 megohm minimum at 500 V •Any pin to case, except case pin Screening •Standard, ES, or 883 (Class H). See Screening Tables 1 and 2 for more information. 390 H Positive Input 25 6 F 3300 pF / 500V 15 FM-704A The case ground connection between the filter and the converter should be as low an impedance as possible to minimize EMI. Direct contact of the baseplate to chassis ground provides the lowest impedance. Figure 1: Schematic – Typical Values www.craneae.com/interpoint 3300 pF 500V Page 2 of 9 FM-704A Rev C - 2011.11.07 Positive Output Case 6600 pF 500V Oscillator Inhibit Input Common 6 F 0.068 F 3300 pF 3.6 H 3.6 H Output Common Crane Aerospace & Electronics Power Solutions FM-704A EMI Input Filter and Transient Suppression Module 28 Volt input – 40 WATT Pin PIN OUT Positive Input 3 Case Ground 2 4 5 6 Inhibit Designation 1 PINS NOT IN USE Leave unconnected Positive Output Output Common Input Common Inhibit Dot on top of package indicates pin one 1 6 5 2 BOTTOM VIEW FM-704A See case K1 for dimensions. 3 4 Figure 2: Pin Out www.craneae.com/interpoint Page 3 of 9 FM-704A Rev C - 2011.11.07 Crane Aerospace & Electronics Power Solutions FM-704A EMI Input Filter and Transient Suppression Module 28 Volt input – 40 WATT model numbering key Base Model DLA Numbers FM - 704A / DLA Drawing (5915) 883 94028-01HXC Screening (Standard screening has no designator in this position.) model Number Options 1 To determine the model number enter one option from each category in the form below. Screening 2 Base Model and Input Voltage Standard (leave blank) Options FM-704A Fill in for model # FM-704A __________ ES 883 (Class H) / Notes: 1. See Model Numbering Key above for an example of a model number. 2. Screening: For standard screening leave the screening option blank. For other screening options, insert the desired screening level. For more information see Screening Table 1. www.craneae.com/interpoint FM-704A/883 For exact specifications for a DLA product, refer to the DLA drawing. DLA drawings can be downloaded from: http://www.landandmaritime.dla.mil/Programs/MilSpec/ default.aspx MIL-STD-704A Reference Category FM-704A Similar Part Page 4 of 9 FM-704A Rev C - 2011.11.07 Crane Aerospace & Electronics Power Solutions FM-704A EMI Input Filter and Transient Suppression Module 28 Volt input – 40 WATT Electrical Characteristics: -55 to +125°C TC, nominal Vin, unless otherwise specified. FM-704A PARAMETER CONDITIONS MIN TYP MAX NO LOAD 0 28 40 INPUT VOLTAGE 40 W LOAD 16 1 UNDERVOLTAGE LOCKOUT 28 40 1 7 – 15 – – 2.5 – – 1.0 NO LOAD – – 5 INHIBITED 40 W, 100 V, 0.5 Ω ZS, 60 ms 2 40 W, 400 V, 0.5 Ω ZS, 5 ms 3 – – 2 40 – 50 40 W, 600 V, 50 Ω ZS, 10 ms 1, 4 500 kHz – – 50 – – 50 60 – – 1 MHz 55 – – – – 0.45 ohms VOUT = VIN - IIN(RDC) – – 1 VDC 16 VIN 1 INPUT CURRENT INPUT SURGE INPUT SPIKE DIFFERENTIAL MODE NOISE REJECTION DC RESISTANCE (RDC) 1 OUTPUT VOLTAGE 40 VIN 1 TC = 25°C STEADY STATE INHIBITED OUTPUT CURRENT 1 INTERNAL POWER DiSSIPATION 1 16 VIN PEAK 40 VIN CONTINUOUS ( > sec) CAPACITANCE – – 2.5 – – 1.0 TC = 105°C – – 1000 TC = 125°C – – 500 TC = 105°C – – 30 TC = 125°C – – 15 ANY PIN TO CASE, TC = 25°C Notes 1.Guaranteed by design, not tested. 2. Meets MIL-STD-1275A (AT) Surge and Figure 8 and 9 of MIL-STD-704A. For these standards derate output power linearly from 40 W at 105°C to 20 W at 125°C. www.craneae.com/interpoint UNITS 8.58 16.5 VDC A mA VOUT VOUT dB A W nF 3.Meets Panavia SP-P-90001, British Standard BS3G100 and Civil Aircraft D0160 Standards. 4.Meets MIL-STD-461C 1.2 CS06 limits. Page 5 of 9 FM-704A Rev C - 2011.11.07 Crane Aerospace & Electronics Power Solutions FM-704A EMI Input Filter and Transient Suppression Module 28 Volt input – 40 WATT Typical Performance Curves: 25°C TC, nominal Vin, unless otherwise specified. 90 90 70 20 CE03 Limit 50 30 10 0 50 GAIN (dB) EMISSION LEVEL (dmA) EMISSION LEVEL (dmA) 70 30 –20 –40 –60 10 -80 .015 0.1 1 FREQUENCY (MHz) 10 50 .015 .1 1 10 FREQUENCY (MHz) 50 10 K 1M 100 K FREQUENCY (Hz) MHF+ Converter without Filter MHF+ Converter with FM-704A Filter Differential Mode Response Figure 3 Figure 4 Figure 5 5 ms / div. 15 watt load Vin andVout 1.00 5 V/ div. 1 A / div. IMPEDANCE (Z, OHMS) 10.00 0.01 FM–704A Figure 6 1K 100 K 10 K 1M FREQUENCY (Hz) 100 ms / div. Figure 8 WATTS 100 1 10 TIME (ms) 100 Derate power linearly to 50% at 125°C. Operation below this curve ensures a maximum junction temperature rise of 40°C or less. Maximum Allowed Internal Power Dissipation 105°C case temperature Figure 9 www.craneae.com/interpoint Page 6 of 9 FM-704A Rev C - 2011.11.07 FM–704A Undervoltage Lockout 1000 10 0.1 Vout 0 volts for Vout Typical Output Impedance (Z) With Input Shorted Figure 7 Inrush Current Vin 0.10 1000 Crane Aerospace & Electronics Power Solutions FM-704A EMI Input Filter and Transient Suppression Module Cases 28 Volt input – 40 WATT BOTTOM VIEW CASE K1 Dot on top of case indicates pin one 0.555 (14.1) 0.000 0.230 (5.84) 0.25 ±0.03 (6.4 ±0.8) 0.000 0.400 max. (10.16) 0.155 (3.94) 0.000 1 2 6 3 5 4 (2.910 max (73.91)) Flange thickness: 0.060 (1.52) Case dimensions in inches (mm) Tolerance ±0.005 (0.13) for three decimal places ±0.01 (0.3) for two decimal places unless otherwise specified 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. Materials Header Cold Rolled Steel/Nickel/Gold Cover Kovar/Nickel Pins #52 alloy/Gold ceramic seal. Seal Hole: 0.120 ±0.002 (3.04 ±0.05) Case K1 FM704A, Rev F, 20100419 Please refer to the numerical dimensions for accuracy. Figure 10: Case K1 www.craneae.com/interpoint Page 7 of 9 FM-704A Rev C - 2011.11.07 2 x Dia 0.162 ±0.002 (4.11 ±0.05) 2 x R 0.170 (4.32) 2.320 (58.93) 1.115 max. (28.32) 0.955 (24.26) 1.845 (46.86) 0.040 dia (1.02) 0.245 (6.22) Seam Seal Crane Aerospace & Electronics Power Solutions FM-704A EMI Input Filter and Transient Suppression Module 28 Volt input – 40 WATT STANDARD AND /ES (NON-QML) AND /883 (CLASS H, QML) MIL-PRF-38534 ELEMENT EVALUATION COMPONENT-LEVEL TEST PERFORMED NON-QML QML STANDARD AND /ES CLASS H /883 M/S 2 M/S 2 P3 Visual Internal Visual Final Electrical Wire Bond Evaluation Element Electrical Notes: 1. Non-QML products may not meet all of the requirements of MIL-PRF-38534. 2. M/S = Active components (Microcircuit and Semiconductor Die) 3. P = Passive components, Class H element evaluation. Not applicable to Standard and /ES element evaluation. SCREENING TABLE 6: ELEMENT EVALUATION —H1: IGH RELIABILITY STANDARD, /ES AND /883 (CLASS H) Screening Table Element Evaluation www.craneae.com/interpoint Page 8 of 9 FM-704A Rev C - 2011.11.07 Crane Aerospace & Electronics Power Solutions FM-704A EMI Input Filter and Transient Suppression Module 28 Volt input – 40 WATT STANDARD AND /ES (NON-QML) AND /883 (CLASS H, QML) MIL-PRF-38534 ENVIRONMENTAL SCREENING NON-QML 1 TEST PERFORMED pre-cap inspection, Method 2017, 2032 STANDARD /ES QML /883 temperature cycle (10 times) Method 1010, Cond. C, -65°C to +150°C, ambient Method 1010, Cond. B, -55°C to +125°C, ambient constant acceleration Method 2001, 3000 g Method 2001, 500 g burn-in Method 1015, +125°c case, typical 2 96 hours 160 hours Final electrical test, Mil-prF-38534, group a, Subgroups 1 through 6, -55°C, +25°C, +125°C case Subgroups 1 and 4, +25°C case Hermeticity test Gross Leak, Method 1014, Cond. C Fine Leak, Method 1014, Cond. A Gross Leak, Dip Final visual inspection, Method 2009 Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. Notes: 1. Standard and /ES, non-QML products, may not meet all of the requirements of MIL-PRF-38534. 2. Burn-in temperature designed to bring the case temperature to +125°C minimum. Burn-in is a powered test. SCREENING TABLE 7: ENVIRONMENTAL SCREENING—HIGH RELIABILITY STANDARD, /ES AND /883 (CLASS H) Screening Table 2: Environmental Screening FM-704A EMI Input Filters FM-704A Rev C - 2011.11.07. This revision supersedes all previous releases. All technical information is believed to be accurate, but no responsibility is assumed for errors or omissions. Crane Electronics, Inc. reserves the right to make changes in products or specifications without notice. Interpoint and FM-704A are trademarks of Crane Electronics, Inc. Copyright © 1999 - 2011 Crane Electronics, Inc. All rights reserved. www.craneae.com/interpoint Page 9 of 9