96003-01HXC中文资料
B3-25
DESCRIPTION
The FMSA-461 EMI filter module has been designed as a companion for Interpoint MSA flyback power converters. Multiple MSA power converters can be operated from a single filter provided the total power line current does not exceed the filter maximum rating. The FMSA filter will reduce the MSA’s power line reflected ripple current to within the limit of MIL-STD-461C, Method CE03, as shown in the example of Figures 4 and 5.
The FMSA is fabricated using thick film hybrid technology and is sealed in a metal package for military, aerospace and other appli-cations requiring EMI suppression. The filter uses only ceramic capacitors for reliable high temperature operation.
O PERATION
The MSA power converter has an internal 2 μF capacitor across its input power terminals. When the MSA and FMSA filters are used together, this capacitor becomes part of the filter and forms its final LC output section. When 2 or 3 MSAs are used with a single filter,this capacitor becomes 4 μF or 6 μF respectively, rather than 2 μF,improving the rejection vs. frequency.
The FMSA filter can also be used with other types of Interpoint power converters (MHF, MHF+, MHE, MHD, and DCH series) to comply with CE03. For MHF, MHF+, MHD, and MHE models, the converter has an LC type line filter such that an inductor is seen looking into its positive input terminal. For these converters, it is necessary to terminate the filter with a capacitor to insure uncondi-tionally stable operation. A capacitor across the filter output termi-nals of greater than 4μF or the optional damping circuit shown on the connection diagram will be adequate for stable operation. No capacitor is required for MSA, or DCH models.
O PTIONAL D AMPING C IRCUIT
The optional damping circuit (Figure 2) can be used to prevent filter overshoot caused by MIL-STD-704A 80 V, or other, transients having rise times of less than 200 μSec. This damping can be alter-nately provided with a 1.50 ?resistor in series with the filter positive input where the additional line loss can be tolerated. For transients with rise times of greater than 200 μsec, there is no overshoot and the damping circuit is not required.
L AYOUT R EQUIREMENTS
The case of the filter must be connected to the case of the converter through a low impedance connection to minimize EMI.
F EATURES
??at 500 kHz
??DC power bus
Size (max.): 0.975 x 0.800 x 0.270 (24.77 x 20.32 x 6.86 mm)
ABSOLUTE MAXIMUM RATINGS
TYPICAL CHARACTERISTICS
RECOMMENDED OPERATING CONDITIONS
Input Voltage
?0 to 40 VDC continuous ?80 V for 100 ms transient
Lead Soldering Temperature (10 sec per lead) ?300°C
Storage Temperature Range (Case)?–65°C to +150°C
B3-26
FMSA EMI FILTER 0.8 AMP
Input Voltage Range
?16 to 40 VDC continuous
Case Operating Temperature (Tc)?–55°C to +125°C full power Derating Input/Output Current
?Derate linearly from 100% at 100°C to 0.60
amps at 125°C case. Above 125°C derate to 0%.
Electrical Characteristics:25°C Tc,nominal Vin,unless otherwise specified.
EMI I NPUT F ILTERS
Capacitance ? 0.045 μF max, any pin to case Isolation
?100 megohm minimum at 500 V ?Any pin to case, except case pin
FMSA-461
PARAMETER CONDITIONS MIN TYP MAX UNITS INPUT VOLTAGE CONTINUOUS 02840VDC TRANSIENT, 100 ms ——80V INPUT CURRENT
——0.80A DIFFERENTIAL MODE 200 kHz
40——dB
NOISE REJECTION 500kHZ TO 50MHz 60——COMMON MODE NOISE REJECTION 2MHz - 50 MHz 40——dB DC RESISTANCE (R DC )TC = 25°C —
—
1.2
?OUTPUT VOLTAGE STEADY STATE
V OUT = V IN - I IN (R DC )
VDC OUTPUT CURRENT STEADY STATE (<100°C CASE)
——0.80A INTERNAL POWER DISSIPATION
MAXIMUM CURRENT
—
—
0.96W
B3-27
EMI I NPUT F ILTERS
DSCC NUMBER
DSCC D RAWING
(5915)96003-01HXC
FMSA -461 F ILTER
S IMILAR P ART FMSA-461/883
For exact specifications for a DSCC product, refer to the DSCC drawing.See Section A3, “SMD/DSCC Lists”, for more information.
FMSA EMI FILTER
0.8 AMP
B3-28
Typical Performance Curves:25°C Tc ,nominal Vin,unless otherwise specified.
EMI I NPUT F ILTERS
FMSA EMI FILTER 0.8 AMP
C E
03
L I M I T
NARROWBAND
0.1
1
10
50
908070605040
3020100.015
0.1
1
10
50
9080706050403020100.015
NARROWBAND
C E
03
L I M I T
IGURE 26621-001-DTS Rev A DQ# 4005
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. MGH Series is a trademark of Interpoint.Copyright ?1994 - 1999 Interpoint. All rights reserved.
B8-6
CASE A
C ASES
Note: Although every effort has been made to render the case drawings at actual size, variations in the printing process may cause some distortion. Please refer to the numerical dimensions for accuracy.
TEST (125°C Products)STANDARD/ES/883 (Class H)* PRE-CAP INSPECTION
Method 2017,2032yes yes yes TEMPERATURE CYCLE (10 times)
Method 1010, Cond. C, -65°C to 150°C no no yes Method 1010, Cond. B, -55°C to 125°C no yes no CONSTANT ACCELERATION
Method 2001, 3000 g no no yes Method 2001, 500 g no yes no
BURN-IN
Method 1015, 160 hours at 125°C no no yes
96 hours at 125°C case (typical)no yes no
FINAL ELECTRICAL TEST MIL-PRF-38534, Group A
Subgroups 1 through 6: -55°C, +25°C, +125°C no no yes Subgroups 1 and 4: +25°C case yes yes no HERMETICITY TESTING
Fine Leak, Method 1014, Cond. A no yes yes
Gross Leak, Method 1014, Cond. C no yes yes
Gross Leak, Dip (1 x 10-3)yes no no
FINAL VISUAL INSPECTION
Method 2009yes yes yes
Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534.
*883 products are built with element evaluated components and are 100% tested and guaranteed over the full military temperature range of –55°C to +125°C.
MOR Series MFLHP Series MFL Series MHP Series MTR Series MQO Series**MHD Series
MHV Series
MHF+ Series
MHF Series**
MGA Series
MSA Series
MGH Series
MCH Series
FM-704A EMI Filter
FMD**/FME EMI Filter
FMC EMI Filter
FMH EMI Filter
FMGA EMI Filter
FMSA EMI Filter
HUM Modules**
LCM Modules**
LIM Modules
QA SCREENING
125°C PRODUCTS
125°C P RODUCTS
Applies to the following products
**MFLHP Series, MQO Series, MHF Series, FMD EMI Filters, Hum Modules, and LCM Modules do not offer ‘883” screening.
C2-10