AME28461X/HB - AnalogicTech

LAMBDA ADVANCED ANALOG INC. λλ PRELIMINARY

AME50461

Hybrid - High Reliability

EMI Filter

DESCRIPTION FEATURES

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 MIL-

STD-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 Lambda 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-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 Advanced Analog for special requirements.

n Up to 7 Ampere Output Current

n Attenuation > 35dB at 200KHz

n Low Profile (0.380") Seam Welded Package

n Ceramic Feedthru Copper Core Pins

n Operation Over Full Military Temp Range

n Standard Military Drawings Available

Typical Connection Diagram

AME50461

EMI Filter

AFL50xx

or Other

DC/DC Converter

+Vin

Input Return

+Vout

Output Return

To Additional Converters up to Total

of Filter Rated Output Current

System

Bus

AFL50xx

or Other

DC/DC Converter

+Vout

Output Return

+Vin

Input Return

Note: Filter and Converter

Cases Should be

Electrically Connected

SPECIFICATIONS AME50461

ABSOLUTE MAXIMUM RATINGS Note 1

Input Voltage -300V to +300V Note 2

Input Current 7 A

Lead Soldering Temperature 300°C for 10 seconds

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

Storage -65°C to +135°C

Electrical Characteristics -55°C ≤ TCASE ≤ +125°C, -40 ≤ VIN ≤ +40 unless otherwise specified.

Parameter Group A

Subgroups Test Conditions Min Nom Max Unit

INPUT VOLTAGE Steady State

Transient Note 2

-100

-300

—+100

+300 VDC

OUTPUT VOLTAGE 1, 2, 3 VOUT = VIN - IIN(RDC)VDC

OUTPUT CURRENT Note 3 7.0 ADC

DC RESISTANCE Note 4 1TC = 25°C

TC = 125°C 60

100 mΩ

POWER DISSIPATION Maximum Current

TC = 25°C

TC = 125°C 2.94

4.90 W

NOISE REDUCTION 200 KHz - 500 KHz

500 KHz - 1 MHz

1 MHz - 50 MHz

65 dB

ISOLATION 1Any Pin to Case

Tested @ 500VDC 100 MΩ

CAPACITANCE Measured Between Any Pin and Case 40 nF

DEVICE WEIGHT Slight Variations with Case Style 95 gms

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 ± 300 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.

AME50461 Case Style Outlines

Case X Case W

Pin Variation of Case Y

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

0.050

0.220

0.250

1.000

ø 0.040

0.525

0.380

Max

2.800

0.42

Case Y Case Z

Pin Variation of Case Y

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

Ref

ø 0.040

0.525

0.380

Max

2.800

0.36

Tolerances, unless otherwise specified: .XX =±0.010

.XXX =±0.005

AME50461 Pin Designation

Pin No. Designation

1Positive Input

2Positive Input

3Positive Input

4Input Return

5Input Return

6Input Return

7Output Return

8Output Return

9Output Return

10 Positive Output

11 Positive Output

12 Positive Output

Available Screening Levels and Process Variations for AME50461 Series.

Requirement MIL-STD-883

Method No

Suffix ES

Suffix HB

Suffix CH

Suffix

Temperature Range -20°C to +85°C -55°C to +125°C -55°C to +125°C -55°C to +125°C

Element Evaluation MIL-PRF-38534

Internal Visual 2017 ¬üüü

Temperature Cycle 1010 Cond B Cond C Cond C

Constant Acceleration 2001 500g Cond A Cond A

Burn-in 1015 96hrs @ 125°C 160hrs @ 125°C 160hrs @ 125°C

Final Electrical (Group A) MIL-PRF-38534

Specification 25°C 25°C -55, +25, +125°C -55, +25, +125°C

Seal, Fine & Gross 1014 Cond C Cond A, C Cond A, C Cond A, C

External Visual 2009 ¬üüü

¬ per Commercial Standards

Part Numbering AME 50 461 X / CH

Model

Input Voltage

28 = 28V

50 = 50V

270 = 270V Applicable

Military Test

Standard

Case Style

W, X, Y, Z

Screening

— , ES, HB, CH

AME50461 Circuit Description

Figure I. AME50461 Block Diagram

121

20 nF

Case

Output

Return

Input

Return

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

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 Sheet 1.

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 Lambda Advanced Analog line

including the ASA, AHF, AHV and ATR series.

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.

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. 9847

LAMBDA ADVANCED ANALOG INC. λMIL-PRF-38534 Qualified

ISO 9001 Registered 2270 Martin Avenue

Santa Clara CA 95050-2781

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