Crane Aerospace & Electronics Power Solutions FM-704A HP EMI Input Filter and Transient Suppression Module 28 Volt input – 160 WATT Features Active transient suppression Undervoltage lockout • Up to 60 dB attenuation at 500 kHz • Operating temperature -55° to +125°C • Nominal 28 V input, 16 V to 40 V operation • Inhibit function model • Meets MIL-STD-461A-C CEO3 FM-704A HP Description The Interpoint™ FM-704A HP™ 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 HP 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. MIL-STD Noise Management When used in conjunction with Interpoint converters, the FM-704A HP 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 HP filter effectively attenuates the ripple generated by switching converters, it will not suppress RF applied to its input terminals. Temperature Operation FM-704A HP 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 160 watts at 105°C to 80 watts at 125°C. See Figure 9. Protection To provide protection for itself and converters, the FM-704A HP filter blocks transients as required by the following standards: ‣‣MIL-STD-704A ‣‣MIL-STD-461 A-F ‣‣MIL-STD-1275 Refer to the Electrical Characteristics table on the 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. 160 WATT Internal Power Dissipation To keep internal power dissipation to safe operating levels, the input current should never exceed 10 amps at 16 Vin or 4 amps at 40 Vin. When the FM-704A HP filter is used with PWM (Pulse Width Modulated) converters, Iline will vary as Power / Vline and 10 amps maximum at 16 Vin will reduce to approximately 4 amps maximum at 40 Vin. The maximum value allowed may be less than 4 amps as determined by line transients and the safe operating area of Figure 9. Figure 9 illustrates the maximum allowed internal dissipation for the FM-704A HP 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 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 300 W can be dissipated for up to 60 milliseconds. Features The inhibit function allows the FM-704A HP filter to be used as a high-side switch. When the inhibit terminal (pin 6) is left open or pulled high, the FM-704A HP 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. Crane Aerospace & Electronics Power Solutions - Interpoint Products 10301 Willows Road NE, Redmond, WA 98052 +1.425.882.3100 • [email protected] www.craneae.com/interpoint Page 1 of 8 FM-704A HP Rev C - 2011.12.06 Crane Aerospace & Electronics Power Solutions FM-704A HP EMI Input Filter and Transient Suppression Module 28 Volt input – 160 WATT Operating Conditions and characteristics Input Voltage Range •16 to 40 VDC continuous for 160 W load Lead Soldering Temperature (10 sec per pin) •300°C Storage Temperature Range (Case) •-65°C to +150°C 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. Case Operating Temperature (TC) •-55°C to +125°C full power Derating Output Power/Current •Linearly from 160 W at 105°C to 80 W at 125°C to meet MIL-STD-1275A (AT) and MIL-STD-704A Capacitance •0.065 µF max, any pin to case mechanical and environmental Size (maximum) •3.005 x 1.505 x 0.400 inches (76.33 x 38.23 x 10.16 mm) •See case U for dimensions. Undervoltage lockout •7 VDC min, 15 VDC max Isolation (TC = 25°C) •100 megohm minimum at 500 V •Any pin to case, except case pin Weight (maximum) •86 grams typical Screening •Standard or ES, see Screening Table 1 for more information. Positive Output 28 Vin Inhibit Oscillator Output Common Input Common FM-704A HP 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: Simplified Schematic www.craneae.com/interpoint Page 2 of 8 FM-704A HP Rev C - 2011.12.06 Crane Aerospace & Electronics Power Solutions FM-704A HP EMI Input Filter and Transient Suppression Module 28 Volt input – 160 WATT Pin PIN OUT 1, 2 3 4, 5, 6 7, 8, 9 10, 11, 12 Designation Inhibit PINS NOT IN USE Leave unconnected 28 Vin Inhibit Input Common Output Common Positive Output Angled corner and cover marking indicate pin one. 1 12 2 3 4 5 11 TOP VIEW FM-704A HP See case U for dimensions. 6 9 8 7 Figure 2: Pin Out www.craneae.com/interpoint 10 Page 3 of 8 FM-704A HP Rev C - 2011.12.06 Crane Aerospace & Electronics Power Solutions FM-704A HP EMI Input Filter and Transient Suppression Module 28 Volt input – 160 WATT model numbering key Base Model FM - 704A HP / ES MIL-STD-704A Reference 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. Category Base Model and Input Voltage Options FM-704A HP Fill in for model # FM-704A HP __________ Screening 2 (standard, leave blank) ES / 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 Page 4 of 8 FM-704A HP Rev C - 2011.12.06 Crane Aerospace & Electronics Power Solutions FM-704A HP EMI Input Filter and Transient Suppression Module 28 Volt input – 160 WATT Electrical Characteristics: 25°C TC, nominal Vin, unless otherwise specified. FM-704A HP PARAMETER CONDITIONS MIN TYP MAX NO LOAD 0 28 40 INPUT VOLTAGE 160 W LOAD 16 1 UNDERVOLTAGE LOCKOUT 16 VIN 1 INPUT CURRENT 40 VIN 1 NO LOAD 1 INHIBITED 1 INPUT SURGE INPUT SPIKE DIFFERENTIAL MODE NOISE REJECTION DC RESISTANCE (RDC) 1 OUTPUT VOLTAGE 160 W, 100 V, 0.5 Ω ZS, 60 ms 1 160 W, 100 V, 0.5 Ω ZS, 60 ms 1, 2 INTERNAL POWER DiSSIPATION 1 – 15 – – 10 – – 4.0 – – 5 – – 2 42 – 48 VDC A mA VOUT – – 48 – – 1 MHz 55 – – TC = 25°C – – 0.1 ohms VOUT = VIN - IIN(RDC) VDC – – – – 10 – – 4.0 TC = 105°C TC = 105°C 16 VIN 40 VIN CONTINUOUS ( > sec) 1 – – 4000 TC = 125°C – – 2000 – – 120 TC = 125°C – – 60 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 160 W at 105°C to 80 W at 125°C. www.craneae.com/interpoint 7 60 INHIBITED PEAK 40 1 500 kHz STEADY STATE 1 OUTPUT CURRENT 1 28 UNITS Page 5 of 8 FM-704A HP Rev C - 2011.12.06 VOUT dB A W Crane Aerospace & Electronics Power Solutions FM-704A HP EMI Input Filter and Transient Suppression Module 28 Volt input – 160 WATT Typical Performance Curves: 25°C TC, nominal Vin, unless otherwise specified. 70 70 EMISSION LEVEL (dmA) 50 30 10 20 CE03 Limit 0 GAIN (dB) 90 EMISSION LEVEL (dmA) 90 50 30 –20 –40 –60 10 -80 .015 0.1 1 FREQUENCY (MHz) 10 .015 50 MHF+ Converter without Filter .1 1 FREQUENCY (MHz) 10 50 Differential Mode Response Figure 4 Figure 5 Vin andVout 1.00 5 V/ div. 1 A / div. IMPEDANCE (Z, OHMS) 10.00 Figure 6 1K 100 K 10 K 100 ms / div. 1M FREQUENCY (Hz) Undervoltage Lockout Figure 8 10,000 WATTS 4,000 1,000 160 W 100 0.1 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 Vout 0 volts for Vout Typical Output Impedance (Z) with Input Shorted Figure 7 Inrush Current Vin 0.10 0.01 15 watt load 100 K FREQUENCY (Hz) MHF+ Converter with Filter Figure 3 5 ms / div. 10 K Page 6 of 8 FM-704A HP Rev C - 2011.12.06 1000 1M Crane Aerospace & Electronics Power Solutions FM-704A HP EMI Input Filter and Transient Suppression Module 28 Volt input – 160 WATT TOP VIEW CASE U* Flanged case, short-leaded *Does not require designator in Case Option position of model number. 1.505 (38.23) max. 2 11 0.850 (21.59) 3 10 0.650 (16.51) 4 9 0.450 (11.43) 5 8 0.250 (6.35) 6 7 0.000 0.120 (3.05) 0.000 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, compression glass seal Seal Hole: 0.100 ±0.002 (2.54 ±0.05) Case U, Rev F, 20100503 Figure 10: Case U www.craneae.com/interpoint Page 7 of 8 FM-704A HP Rev C - 2011.12.06 0.220 (5.59 1.050 (26.67) 0.040 dia (1.02) 0.050 (1.27) 0.000 12 2.750 (69.85) 1 0.120 (3.05) 0.250 (6.35) 1.250 (31.75) 2.880 (73.15) 3.005 (76.33) max. 1.380 (35.05) Seam Seal 0.128 dia (3.25). 0.23 (5.8) Pin Length 0.400 (10.16) max. Angled corner indicates pin one. Crane Aerospace & Electronics Power Solutions FM-704A HP EMI Input Filter and Transient Suppression Module 28 Volt input – 160 WATT STANDARD AND /ES (NON-QML) ENVIRONMENTAL SCREENING 1, 2 NON-QML test perFOrmed standard /es pre-cap inspection Method 2017, 2032 temperature cycle (10 times) Method 1010, Cond. B, -55°C to +125°C, ambient constant acceleration Method 2001, 500 g burn-in Method 1015 3 96 hours Final electrical test Mil-prF-38534, group a Subgroups 1 and 4: +25°C case Hermeticity test Fine Leak, Method 1014, Cond. A Gross Leak, Method 1014, Cond. C Gross Leak, Dip Final visual inspection Method 2009 Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. Notes: 1. “Non-QML” Refers to products that do not offer QML screening. 2. Standard and /ES, non-QML products, may not meet all of the requirements of MIL-PRF-38534. 3. Burn-in temperature designed to bring the case temperature to +125°C minimum. Burn-in is a powered test. Refer to the specific product information for the maximum case temperature. SCREENING TABLE 8: ENVIRONMENTAL SCREENING—HIGH RELIABILITY STANDARD AND /ES, NON-QML Screening Table 1: Environmental Screening FM-704A HP Rev C - 2011.12.06. 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 HP are trademarks of Crane Electronics, Inc. Copyright © 1999 - 2011 Crane Electronics, Inc. All rights reserved. www. craneae.com/interpoint Page 8 of 8