AME28461X/ES - Lambda Advanced Analog

AME28461

Hybrid - High Reliability

EMI Filter

DESCRIPTION

The AME Series of EMI filters have been designed

to provide full compliance with the input line re-

flected ripple current requirement specified by CE03

of MIL-STD-461C over the full military tempera-

ture 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

or +270 input line voltage. Other converters oper-

ating 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 Lambda Advanced

Analog’s rugged ceramic lead-to-package seal as-

suring long term hermetic seal integrity in harsh

environments.

Manufactured in a facility fully qualified to MIL-

PRF-38534, 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 MIL-PRF-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.

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 Lambda Ad-

vanced Analog for special requirements.

FEATURES

■Up to 15 Ampere Output Current

■Attenuation > 35dB at 200KHz

■Low Profile (0.380") Seam Welded Package

■Ceramic Feedthru Copper Core Pins

■Operation Over Full Military Temp Range

■Standard Microcircuit Drawings Available

PRELIMINARY

AME28461

EMI Filter

AFL28xx

or Other

DC/DC Converter

+Vin

Input Return

+Vout

Output Return

To Additional Converters up to Total

of Filter Rated Output Current

System

Bus

AFL28xx

or Other

DC/DC Converter

+Vout

Output Return

+Vin

Input Return

Note: Filter and Converter

Cases Should be

Electrically Connected

Typical Connection Diagram

SPECIFICATIONS

ABSOLUTE MAXIMUM RATINGS Note 1

Input Voltage -100V to +100V

Input Current 30 A

Lead Soldering Temperature 300°C for 10 seconds

Case Temperature Operating -55°C to +125°C

Storage -65°C to +135°C

Static Characteristics -55°C ≤≤

≤≤

≤TCASE ≤≤

≤≤

≤ +125°C, 16 ≤≤

≤≤

≤ VIN ≤≤

≤≤

≤ 40 unless otherwise specified.

AME28461

Notes to Specifications:

1. Operation above maximum ratings may cause permanent damage to the device. Operation at maximum ratings may degrade performance

and affect reliability.

2. Device can tolerate ± 100 Volt transient whose duration is ≤ 100 ms when RS ≥ 0.5 Ω.

3. Derate Output Current linearly from 100% at 125°C to 0 at 135°C.

4. 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.

retemaraP ApuorG spuorgbuS snoitidnoCtseTniMmoNxaMtinU

EGATLOVTUPNI etatSydaetS

tneisnarT

2etoN

04-

001---

04+

001+

EGATLOVTUPTUO

3etoN

3,2,1 V=tuoV

I-

ECNATSISERCD

4etoN

0.51A

NOITAPISSIDREWOP1

C52=cT

C521=cT 04

NOITCUDERESION tnerruCmumixaM

C52=cT

C521=cT 0.9

57.51

NOITALOSI1

zHK005-zHK002

zHM1-zHK005

zHM05-zHM1

56 Bd

ECNATICAPAC esaCotniPynA

CDV005@detseT 001M

THGIEWECIVEDesaCdnaniPynAneewteBderusaeM04Fn

elytSesaChtiwsnoitairaVthgilS59smg

Ω.

0.050

0.220

0.250

1.000

Ref

ø 0.040

0.525

0.380

Max

2.800

0.36

1.500 1.750

2.500

0.25 typ

1.150

0.050

0.220

712

1.750 0.375

2.00

0.250

1.000

Ref 0.200 Typ

Non-cum

ø 0.040

0.300

ø 0.140

0.238 max

0.380

Max

2.975 max

0.050

0.220

0.250

1.000

ø 0.040

0.525

0.380

Max

2.800

0.42

1.260 1.500

2.500

2.760

3.000

ø 0.128

0.250

1.000

Ref 0.200 Typ

Non-cum

0.050

0.220

ø 0.040

0.238 max

0.380

Max

2.975 max

712

Case X Case W

Pin Variation of Case Y

Case Y Case Z

Pin Variation of Case Y

AME28461 Case Style Outlines

Tolerances, unless otherwise specified: .XX =

0.010

.XXX =

0.005

AME28461 Pin Designation

Available Screening Levels and Process Variations for AME28461 Series.

* per Commercial Standards

Part Numbering

AME 28 461 X / CH

Model

Input Voltage

28 = 28V

270 = 270V

Applicable

Military Test

Standard

Case Style

W, X, Y, Z

Screening

—

, ES, HB, CH

.oNniP.oNniP.oNniP.oNniP.oNniPnoitangiseDnoitangiseDnoitangiseDnoitangiseDnoitangiseD

1tupnIevitisoP

2tupnIevitisoP

3tupnIevitisoP

4nruteRtupnI

5nruteRtupnI

6nruteRtupnI

7nruteRtuptuO

8nruteRtuptuO

9nruteRtuptuO

01tuptuOevitisoP

11tuptuOevitisoP

21tuptuOevitisoP

tnemeriuqeRtnemeriuqeRtnemeriuqeRtnemeriuqeRtnemeriuqeR 388-DTS-LIM388-DTS-LIM388-DTS-LIM388-DTS-LIM388-DTS-LIM

dohteM oNoNoNoNoN xiffuS SESESESESE xiffuS BHBHBHBHBH xiffuS HCHCHCHCHC xiffuS

egnaRerutarepmeTC°58+ot02-C°521+otC°55-C°521+otC°55-C°521+otC°55-

noitaulavEtnemelE 43582-FRP-LIM

lausiVlanretnI7102*seYseYseY

elcyCerutarepmeT0101BdnoCCdnoCCdnoC

noitareleccAtnatsnoC1002g005AdnoCAdnoC

ni-nruB5101C°521@srh69C°521@srh061C°521@srh061

)ApuorG(lacirtcelElaniF 43583-FRP-LIM

noitacificepS&

C°52C°52C°521+,55+,55-C°521+,55+,55-

ssorG&eniF,laeS4101CdnoCC,AdnoCC,AdnoCC,AdnoC

lausiVlanretxE9002*seYseYseY

AME28461 Circuit Description

Figure I. AME28461 Block Diagram

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. Figure I. describes the general ar-

rangement of the principal elements which have been

connected to provide both differential and normal

mode buffering between the input and output termi-

nals.

Employing only passive elements, AME filter opera-

tion 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 con-

verters, 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

Sheet 1.

Although expressly designed to complement the

AFL series of DC/DC converters, the AME filters

can be successfully operated in conjunction with

other converters in the Lambda Advanced Ana-

log line including the ASA, AHF, AHV and ATR

series.

121

22 µF 11 µF

20 nF

Case

Output

Return

Input

Return

1 To calculate the input current (iin) 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.

2270 Martin Avenue

Santa Clara CA 95050-2781

(408) 988-4930 FAX (408) 988-2702

MIL-PRF-38534 Qualified

ISO9001 Registered

9715

Lambda Advanced Analog The information in this data sheet has been carefully checked and is believed to be accurate; however no

responsibility is assumed for possible errors.These specifications are subject to change without notice.