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PD - 94595
AME50461 SERIES ADVANCED ANALOG EMI FILTER HYBRID / HIGH RELIABILITY
Description
The AME Series of EMI filters have been designed to provide full compliance with the input line reflected ripple current requirement specified by CE03 of MILSTD-461C over the full military temperature range while operating in conjunction with the corresponding AFL series of DC/DC converters. These filters are offered as part of a complete family of conversion products providing single and dual output voltages while operating from nominal +28, +50 or +270 input line voltage. Other converters operating with a similar switching frequency will also benefit by use of this device. These EMI filters are hermetically packaged in two enclosure variations, utilizing copper-core pins to minimize resistive DC losses. Three lead styles are available, each fabricated with Advanced Analog's rugged ceramic lead-to-package seal assuring long term hermetic seal integrity in harsh environments. Manufactured in a facility fully qualified to MIL-PRF38534, these converters are available in four screening grades to satisfy a wide range of applications. The CH grade is fully compliant to the requirements of MILPRF-38534 for class H. The HB grade is fully processed and screened to the class H requirement, but does not include element evaluation to the class H requirement.
AME Features
n n n n n n Up to 7.0 Ampere Output Current Attenuation > 35dB @ 200 KHz Low Profile (0.38") Seam Welded Package Ceramic Feedthru Copper-Core Pins Operation Over Full Military Temp. Range Standard Military Drawings Available
Both grades are tested to meet the complete group "A" test specification over the full military temperature range with no derating. Two grades with more limited screening are also available for use in less demanding applications. Variations in electrical, mechanical and screen requirements can be accommodated. Contact Advanced Analog for special requirements.
Typical Connection Diagram
+Vin +Vout +Vin
System Bus
AME50461 EMI Filter
Input Return Output Return
AFL50XX or Other DC/DC Converter
+Vout
RL
Input Return
Output Return
Note: Filter and Converter Cases Should be Electrically Connected
+Vin
AFL50XX or Other DC/DC Converter
+Vout
RL
Input Return
Output Return
To Additional Converters up to Total of Filter Rated Output Current
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12/13/02
AME50461 Series
Specifications
ABSOLUTE MAXIMUM RATINGS Input Voltage Input Current Lead Soldering Temperature Case Temperature
Note 1
-300V to +300V 7.0 A Operating Storage
Note 2
300C for 10 seconds -55C to +125C -65C to +135C
Electrical Characteristics -55C TCASE +125C, -40 VIN +40 unless otherwise specified
Parameter INPUT VOLTAGE Group A Subgroups Test Conditions Steady State Transient OUTPUT VOLTAGE OUTPUT CURRENT DC RESISTANCE
Note 3 Note 2
Min -100 -300
Nom
Max +100 +300
Unit
VDC VDC
1, 2, 3
VOUT = VIN - IIN (RDC) 7.0
ADC m
Note 4
1
TC = 25C TC = 125C Maximum Current TC = 25C TC = 125C 200 KHz - 500 KHz 500 KHz - 1 MHz 1 MHz - 50 MHz 35 60 65 100 40 95
60 100
POWER DISSIPATION
2.94 4.90
w
NOISE REDUCTION
dB M nF gms
ISOLATION CAPACITANCE DEVICE WEIGHT
1
Any Pin to Case Tested @ 500VDC Measured Between Any Pin and Case Slight Variations with Case Style
Notes to Specifications
1. 2. 3. 4. Operation above maximum ratings may cause permanent damage to the device. Operation at maximum ratings may degrade performance and affect reliability. Device can tolerate 300 Volt transient whose duration is 100 ms when RS 0.5 . Derate Output Current linearly from 100% at 125C to 0 at 135C. DC resistance is the total resistance of the device and includes the sum of the input to output resistance and the return in to return out resistance paths.
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AME50461 Series
AME50461 Block Diagram
Input
1 2
20 nF
12 11 10
Output
3
Case 4
20 nF
9
Input Return
5 6
8
7
Output Return
Refer to last page for Pin Designation
Circuit Operation and Application Information
The AME series of filters employ three stages of filtering in a low pass configuration designed to attenuate the higher frequency components of ripple currents generated by high frequency switching DC/ DC converters. The Block Diagram describes the general arrangement of the principal elements which have been connected to provide both differential and normal mode buffering between the input and output terminals. Employing only passive elements, AME filter operation is initiated simply by insertion into the input power path between one or more DC/DC converters and their input DC voltage bus. In this connection, output pins of the filter will be connected to input pins of the converters. When a single AME filter is used in conjunction with multiple DC/DC converters, the use will be limited to the maximum output current capability specified in the AME electrical table.1 A typical connection utilizing one filter to drive two converters is illustrated on page1. Although expressly designed to complement the AFL series of DC/DC converters, the AME50461 filters can be successfully operated in conjunction with other converters in the Advanced Analog line including the ASA, AHF, AHV and ATR series.
1
To calculate the input current (i in ) requirement of any one converter, first determine the maximum output power by multiplying output voltage by maximum load current, divide this power by the efficiency to obtain input power and then divide input power by input voltage to obtain the input current (iin). Note that to obtain worst case input current, you must use maximum load current, minimum efficiency and minimum line voltage in this calculation.
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AME50461 Series
AME50461 Case Style Outlines
Case X Case W
Pin Variation of Case Y
3.000 2.760
o 0.128
0.050 0.050 0.250
12
0.250 1.000 Ref
7
0.25 typ
12
7
1 6
1.260 1.500
0.200 Typ Non-cum Pin o 0.040
1.000
2.500
0.220 0.220 2.800 0.525 0.238 max
Pin o 0.040
2.975 max
0.42 0.380 Max 0.380 Max
Case Y
Case Z
Pin Variation of Case Y
1.150
0.300 o 0.140 0.050 0.050
0.250
1 6
0.250
1.500 1.750 2.00
1.000 Ref
0.200 Typ Non-cum Pin o 0.040
1.000 Ref
1.750 2.500
0.375
0.220
Pin o 0.040 0.220 0.36
2.975 max 0.238 max 0.380 Max
2.800 0.525
0.380 Max
Tolerances, unless otherwise specified:
.XX .XXX
= =
0.010 0.005
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AME50461 Series
Available Screening Levels and Process Variations for AME50461 Series
MIL-STD-883 Method No Suffix -20 to +85C ES Suffix -55C to +125C HB Suffix -55C to +125C CH Suffix -55C to +125C MIL-PRF-38534 2017 1010 2001 1015 MIL-PRF-38534 & Specification 1014 2009 Cond A Cond A, C Yes Cond A, C Yes Cond A, C Yes 48hrs@ 85C 25C Yes Cond B 500g 48hrs@ 125C 25C Yes Cond C Cond A 160hrs @ 125C -55, +25, +125C Yes Cond C Cond A 160hrs @ 125C -55, +25, +125C
Requirement Temperature Range Element Evaluation Internal Visual Temperature Cycle Constant Acceleration Burn-in Final Electrical (Group A) Seal, Fine & Gross External Visual
*
Per Commercial Standards
Pin Designation
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 Designation Positive Input Positive Input Positive Input Input Return Input Return Input Return Output Return Output Return Output Return Positive Output Positive Output Positive Output Model Input Voltage
28 = 28V 50 = 50V 270 = 270V
Part Numbering
AME 50 461 X / CH
Screening
--
, ES, HB, CH
Case Style
W, X, Y, Z
Applicable Military Test Standard
WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 322 3331 ADVANCED ANALOG: 2270 Martin Av., Santa Clara, California 95050, Tel: (408) 727-0500 Visit us at www.irf.com for sales contact information. Data and specifications subject to change without notice. 12/02
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