FM-704a Hp eMi input Filter and transient suppression

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
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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
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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.
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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.
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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
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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
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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