MIL-STD-461 EMI INPUT FILTER
FGDS-10A-50V : up to 10A CURRENT
Gaia Converter FC05-063.07/13 Revision C
©
REDEFINING THE SOURCE OF POWER
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6
10A EMI Filter Module
9 to 50 VDC Input Range
MIL-STD-461D/E/F & DO-160C/D/E/F/G Compliant
1-General
The GAIA Converter filter module FGDS-10A-50V
provides a state-of-the-art product to fulfill
Electromagnetic Interferences (EMI) requirements for
Aerospace and Defence applications.
The FGDS-10A-50V is a very compact and low loss
solution for applications requiring up to 10A input
current.
The FGDS-10A-50V complies with major standards
including :
• the US MIL-STD-461 rev D, E and rev F
• the international DO-160 rev C, D, E, F & rev G.
In particular, the filter module is compliant with
the following requirements of MIL-STD-461D/E
and DO-160-C/D/E standards :
• MIL-STD-461D/E/F Part 2. & 3. requirements :
• Conducted Emission (CE)
• CE102, power leads, emission over
10KHz to 10MHz, basic curve
• Conducted Susceptibility (CS)
• CS101, power leads, frequency 30Hz
to 150KHz, curve #1,
• CS114, bulk cable injection, frequency
10KHz to 400MHz,
• CS115, spikes, bulk cable injection
calibrated spike
• CS116, damped sinusoidal transient
• DO-160-C/D/E/F/G requirements :
• Conducted Emission (CE)
• Section 21 power lines, emission over
15KHz to 152MHz, category B, AZ & LMH
• Conducted Susceptibility (CS)
• Section 20 power lines, frequency 10KHz
to 400MHz
In addition, this filter withstands in a transparent
state without dammage the transient
requirements of :
• MIL-STD-704A with 80V/100ms
• MIL-STD-1275B with 100V/50ms
The FGDS-10A-50V is suitable for all GAIA Converter
DC/DC converters and DC architecture
• from 25W up to 150W output power
• up to 10A output current
• up to 50V permanent input voltage.
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• To comply with MIL-STD-461D/E/F power leads :
• CE 102 : Emission requirement over 10 KHz to 10MHz
• CS 101 : Susceptibility requirement over 30Hz to 150KHz
• CS 114 : Susceptibility requirement over 10KHz to 400MHz
• CS 115 : Susceptibility requirement for spikes
• To comply with DO-160C/D/E/F/G power lines :
• Conducted emission requirement over 15 KHz to 152MHz
• Conducted susceptibility requirement over 10Hz to 400MHz
• Temperature range :
• operating temperature : -40°C/+105°C case
• storage temperature : -55°C/+125°C
• RoHS process
2-Product Selection
Options :
/T : option for -55°C start up operating temperature
/S : option for screening and serialization
FGDS-10A-50V option
/
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EMI Filter FGDS-10A-50V
Gaia Converter FC05-063.07/13 Revision C
©
6
Hi-Rel
Grade
3- Electrical Specifications
Data are valid at +25°C, unless otherwise specified.
Parameter Conditions Limit or
typical Units FGDS-10A-50V
Input
Nominal input voltage Full temperature range Nominal VDC 28
Permanent input
voltage range (Ui) Full temperature range Min. - Max. VDC 9 - 50
Transient input voltage Full temperature range
Full load
Maximum
Maximum
VDC/ms
VDC/ms
80/100
100/50
Output
Permanent output current
Full temperature range
up to 105°C case
Ui min. to max.
Maximum A 10
Permanent output power
Full temperature range
up to 105°C case
Ui min. to max.
Maximum W 150
Power dissipation Current 10A @ 25°C
Current 10A @ 85°C
Maximum
Maximum
W
W
1
1,4
Thermal resistance Case to ambient
in free air cooling Nominal °C/W 16
General
Electrical strengh test
voltage
Case to any pin
Gnd pin to any other pin
Minimum
Minimum
VDC
VDC
500
500
Reliability data MTBF
according MIL-HDBK-217F
Conditions Gf
Conditions AIC
@40°C
@85°C
@40°C
@85°C
Hours
Hours
Hours
Hours
27 000 000
7 000 000
13 000 000
3 500 000
EMI compliance
Conducted emission
Power leads
Power lines
Power lines
MIL-STD-461D/E/F
DO-160C cat B & AZ
DO-160D/E/F/G cat B & LMH
CE102
Section 21
Section 21
See section 6
See section 6
See section 6
Conducted susceptibility
50 Ohm impedance
Imax = 10A
10KHz to 400MHz
MIL-STD-461D/E/F
MIL-STD-461D/E/F
DO-160C/D/E/F/G
CS115
CS116
Section 20
Compliant
Compliant
Compliant
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EMI Filter FGDS-10A-50V
Gaia Converter FC05-063.07/13 Revision C
©
6
Hi-Rel
Grade
4- EMI Filter Electrical Schematics
The GAIA Converter FGDS-10A-50V is suitable for all GAIA Converter DC/DC converters and combinations :
• from 25W up to 150W total output power and up to 10A output current
• up to 50V permanent input voltage and up to 100V transient input voltage during 50ms.
4-1 EMI Filter Electrical Schematics in Front of Modules
The GAIA Converter FGDS-10A-50V can be used directly in front of any DC/DC converter and combination of DC/DC converters
from 50W up to 200W power and up to 10A input current.
In order to exceed the EMI requirements of MIL-STD-461D/E/F or DO-160C/D/E/F/G it is recommended to use 2x FGDS-10A-50V
in series as shown in the following figure.
Configuration with one FGDS-10A-50V in certain case can be implemented : please consult factory.
For better EMI performance and stability purpose GAIA Converter recommends to use a R*C* cell (see section 4) together with
decoupling capacitors (10nF typical) connected to the converters as it is detailed in individual DC/DC converter datasheet.
4-2 EMI Filter Electrical Schematics in a Complete Front-end Architecture
The GAIA Converter FGDS-10A-50V can be used in a complete architecture combining transient protection module LGDS series
and combination of DC/DC converters. In order to exceed the EMI requirements of MIL-STD-461D/E/F or DO-160C/D/E/F/G it
is recommended to use 2x FGDS-10A-50V directly in series up front as shown in the following figure.
Configuration with one FGDS-10A-50V in certain case can be implemented : please consult factory
For better EMI performance and stability purpose GAIA Converter recommends to use a R*C* cell (see section 4-3) (together
with individual DC/DC decoupling capacitors as detailed in individual DC/DC converter datasheet).
This schematics is designed to propose a solution to achieve :
• EMI filtering compliant with conducted emission
• transient protection
EMI input filter
FGDS-10A-50V
Go
+Vo
GI
VI
MGDM-series
Go
+Vo
GI
VI
MGDM-series
Go
+Vo
GI
VI
MGDM-series
EMI input filter
FGDS-10A-50V
LGDS-300
VoVo Vi
Gi
1
2
3
7
8
9
5
Vi
Gi Go
Gnd
Gnd
220µF/50V
Vi
Gi
Vo
Go
C*
R*
C*
R*
Go
Vo
Gi
Vi
Gnd
EMI input filter
FGDS-10A-50V
Go
Vo
Gi
Vi
Gnd
EMI input filter
FGDS-10A-50V
Cc
Cc
Cc
Cc
BP
BP
BP: Base Plate
MGDM-series
Gin
Vin Vo
Go
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EMI Filter FGDS-10A-50V
Gaia Converter FC05-063.07/13 Revision C
©
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Hi-Rel
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4- EMI Filter Electrical Schematics (continued)
4-3 R*C* Network Discussion
The RC damping network is used for stability purposes in negative input impedance systems such as DC/DC converters.
DC/DC converters are negative input impedance systems whereas, filters are composed of passive elements and display a
positive output impedance to the converter.
To ensure the stability of the whole system “LISN + input Filter + DC/DC converters”, the filter output impedance must be
kept below the converter’s input impedance, which is given by the following formula :
Vin2 Vin2 x η
Zin = ____ = _________
Pin Po
where :
Vin is the converter input voltage,
Pin is the converter input power,
Po is the converter output power
η is the efficiency of the converter.
As it can be seen from the preceding equation, the worst case for system’s stability is at Vinmin, so this is the condition
which should be considered for the filter design.
As the filter is made of low ESR inductors and ceramic capacitors, it has an important quality factor Q which causes a sharp
increase of the filter’s output impedance at the resonant frequency and leads to a violation of the stability criteria, causing
the system to break into oscillations.
Consequently, the values of RC network has to be adjusted to dampen sufficiently the filter’s resonance and make its
output impedance lower than the converter’s input impedance.
The value of the RC network strongly depends on the application’s conditions (input voltage range and total power drawn
from the source as well as the standards that the equipment has to meet MIL-STD-461 or DO-160 ... ) this because
measurements method (LISN) differs from one standard to another affecting the C value.
In most applications a low ESR aluminium electrolytic capacitor can be used for damping the network and it’s internal
ESR value will be enough to dampen the input voltage without adding external resistor.
The table hereafter summarizes the recommended capacitor value at 100% output load for various power according to
DO160 and to MIL-STD-461 standards. The capacitor value can be linearly reduced depending on output power; for
example, it can divided by 2 at 50 % load...
Total Power 75W 100W 150W 200W 300W
Capacitor Value for
MIL-STD-461 standards 330 µF 470 µF 470 µF 680 µF 1 000 µF
Capacitor Value for
DO-160 standards 100 µF 100 µF 220 µF 220 µF 330 µF
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EMI Filter FGDS-10A-50V
Gaia Converter FC05-063.07/13 Revision C
©
6
Hi-Rel
Grade
5- MIL-STD-461D/E/F Conducted Emission Tests Set-Up
5-1 MIL-STD-461D/E/F Measurement Method
The conducted noise emission measurement
method is described in the MIL-STD-461D/E/F
standards.
The «DUT» (Device Under Test) is powered thru
a 2 meters length parallel wire.
One end is terminated with the DUT and the other
end is terminated with LISN networks.
The measurements are made with a measurement
receiver, the unit being dBµV
To 50 ohms
input receiver
+28V out
+28V in
Return out
Return in
2m
DUT
LISN
LISN
To 50 ohms
termination
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EMI Filter FGDS-10A-50V
Gaia Converter FC05-063.07/13 Revision C
©
6
Hi-Rel
Grade
6- MIL-STD-461E Conducted Emission Level Results
MIL-STD-461E : MGDS-75-H-F with FGDS-10A-50V MIL-STD-461E : MGDS-100-M-26 with FGDS-10A-50V
MIL-STD-461E : MGDS-150-H-J with FGDS-10A-50V MIL-STD-461E : 2 x MGDS-75-H-J with FGDS-10A-50V
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EMI Filter FGDS-10A-50V
Gaia Converter FC05-063.07/13 Revision C
©
6
Hi-Rel
Grade
6- D0-160C Conducted Emission Level Results
DO-160C : MGDS-75-H-F with FGDS-10A-50V DO-160C : MGDS-75-O-C with FGDS-10A-50V
DO-160C : MGDS-100-M-26 with FGDS-10A-50V DO-160C : MGDS-150-H-J with FGDS-10A-50V
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EMI Filter FGDS-10A-50V
Gaia Converter FC05-063.07/13 Revision C
©
6
Hi-Rel
Grade
6- D0-160E Conducted Emission Level Results
DO-160E : MGDS-75-H-F with FGDS-10A-50V DO-160E : MGDS-75-O-C with FGDS-10A-50V
DO-160E : MGDS-100-M-26 with FGDS-10A-50V DO-160E : MGDS-150-H-J with FGDS-10A-50V
For locations, phone, fax, E-Mail see back cover
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EMI Filter FGDS-10A-50V
Gaia Converter FC05-063.07/13 Revision C
©
6
Hi-Rel
Grade
6- D0-160G Conducted Emission Level Results
DO-160G : MGDS-75-H-F with FGDS-10A-50V DO-160G : MGDS-75-O-J with FGDS-10A-50V
DO-160G : MGDS-150-H-C with FGDS-10A-50V DO-160G : MGDS-150-H-J with FGDS-10A-50V
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EMI Filter FGDS-10A-50V
Gaia Converter FC05-063.07/13 Revision C
©
6
Hi-Rel
Grade
7- Environmental Qualifications
The modules have been subjected to the following environmental qualifications.
Characteristics Conditions Severity Test procedure
Climatic Qualifications
Life at high
temperature
Duration
Temperature / status of unit
Test D : 1 000 Hrs
@ 105°C case, unit operating
@ 125°C ambient, unit not operating
MIL-STD-202G
Method 108A
Altitude
Altitude level C
Duration
Climb up
Stabilization
Status of unit
40 000 ft@-55°C
30 min.
1 000 ft/min to 70 000 ft@-55°C,
30 min.
unit operating
MIL-STD-810E
Method 500.3
Humidity cyclic
Number of cycle
Cycle duration
Relative humidity variation
Temperature variation
Status of unit
10
Cycle I : 24 Hrs
60 % to 88 %
31°C to 41°C
unit not operating
MIL-STD-810E
Method 507.3
Humidity steady
Damp heat
Temperature
Duration
Status of unit
93 % relative humidity
40°C
56 days
unit not operating
MIL-STD-202G
Method 103B
Salt atmosphere
Temperature
Concentration NaCl
Duration
Status of unit
35°C
5 %
48 Hrs
unit not operating
MIL-STD-810E
Method 509.3
Temperature
cycling
Number of cycles
Temperature change
Transfert time
Steady state time
Status of unit
200
-40°C / +85°C
40 min.
20 min.
unit operating
MIL-STD-202A
Method 102A
Temperature
shock
Number of shocks
Temperature change
Transfert time
Steady state time
Status of unit
100
-55°C / +105°C
10 sec.
20 min.
unit not operating
MIL-STD-202G
Method 107G
Mechanical Qualifications
Vibration
(Sinusoidal)
Number of cycles
Frequency / amplitude
Frequency / acceleration
Duration
Status of unit
10 cycles in each axis
10 to 60 Hz / 0.7 mm
60 to 2 000 Hz / 10 g
2h 30 min. per axis
unit not operating
MIL-STD-810D
Method 514.3
Shock
(Half sinus)
Number of shocks
Peak acceleration
Duration
Shock form
Status of unit
3 shocks in each axis
100 g
6 ms
1/2 sinusoidal
unit not operating
MIL-STD-810D
Method 516.3
Bump
(Half sinus)
Number of bumps
Peak acceleration
Duration
Status of unit
2 000 bumps in each axis
40 g
6 ms
unit not operating
MIL-STD-810D
Method 516.3
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EMI Filter FGDS-10A-50V
Gaia Converter FC05-063.07/13 Revision C
©
6
Hi-Rel
Grade
8- Dimensions
11- Connections
Dimension are given in mm (inches). Tolerance : +/- 0,2 mm (+/-0.01’’) unless otherwise indicated.
Weight : 25 grams (0.882 Ozs) max.
Pin Single
1 + Input (Vi)
2 - Input (Gi)
3 - Output (Go)
4 + Output (Vo)
5 Ground (Gnd)
6 Ground (Gnd)
4
3
1
2
5
6
Bottom view
9- Materials
Case : Metallic case black anodized coating.
Pins : Plated with pure matte tin over nickel underplate.
10- Product Marking
Upper face : Company logo, location of manufacturing.
Side face : Module reference, option, date code : year and week of manufacturing.
Information given in this datasheet is believed to be accurate and reliable. However, no responsibility is assumed for the consequence of its use nor for any infringement of patents or other rights of third parties which may result from its use.
These products are sold only according to GAIA Converter general conditions of sale, unless otherwise confirmed by writing. Specifications subject to change without notice.
Printed in France by GAIA Converter Gaia Converter FC05-63.07/13 Revision C. Graphisme : Philippe Clicq
Represented by :
For more detailed specifications and applications information, contact :
International Headquarters
Marketing and Sales department
GAÏA Converter - France
Address : B.P. 26 - 33186 LE HAILLAN - FRANCE
Tel. : + (33)-5-57-92-12-80
Fax : + (33)-5-57-92-12-89
North American Headquarters
GAÏA Converter Canada, Inc
Address : 6611 Thimens
ST-LAURENT, QUEBEC - CANADA H4S 1W2
Tel. : (514)-333-3169
Fax : (514)-333-4519
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