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PD-94688C
AMF28XXD SERIES HYBRID - HIGH RELIABILITY RADIATION TOLERANT DC/DC CONVERTER
Description
The AMF28XXD series of DC/DC converter modules has been specifically designed for operation in moderate radiation environments supplementing the higher radiation performance available in the International Rectifier ART2815T converter series. Environments presented to space vehicles operating in low earth orbits, launch boosters, orbiting space stations and similar applications requiring a low power, high performance converter with moderate radiation hardness performance will be optimally served by the AMF28XXD series. The physical configuration of the AMF28XXD series permits mounting directly to a heat conduction surface without the necessity of signal leads penetrating the heat sink surface. This package configuration permits greater independence in mounting and more mechanical security than traditional packages. International Rectifier's rugged ceramic seal pins are used exclusively in the package thereby assuring long term hermeticity. The AMF28XXD has been designed for high density using chip and wire hybrid technology that complies with the class H requirements of MIL-PRF-38534. Manufactured in a facility fully qualified to MIL-PRF-38534, these converters are fabricated utilizing DSCC qualified processes. For available screening options, refer to device screening table in the data sheet. Applicable generic lot qualification test data including radiation performance can be made available on request. Consult IR Santa Clara for special requirements.
28V Input, Dual Output
AMF Features
n n n n n n n n n n n n n n 12W Output Power Available in 5V, 12V and 15V Outputs 16 - 40VDC Input Range (28VDC Nominal) Low Input/Output Noise Total Ionizing Dose > 25KRads (Si) 2 SEE Hardened to LET up to 60MeV.cm /mg -55C to +125C Operating Range Indefinite Short Circuit Protection Flexible Mounting High Power Density Fully Isolated - Input to Output and to Case Complimentary EMI Filter Available Externally Synchronizable Electrical Performance Similar to AHF28XXD Series n Standard Microcircuit Drawings Available
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1
09/15/08
AMF28XXD Series
Specifications
Absolute Maximum Ratings
Input Voltage range Soldering temperature Storage case temperature -0.5V to +50VDC 300C for 10 seconds -65C to +135C
Recommended Operating Conditions
Input Voltage range Output Power Operating case temperature +16V to +40VDC Less than or equal to 12W -55C to +125C
Static Characteristics
Parameter
Input Voltage Output Voltage
-55C TCASE +125C, VIN=28VDC 5%, CL=0, unless otherwise specified.
Group A Subgroups
Test Conditions
Min
16
Nom
28
Max
40
Unit
V
AMF2805D AMF2812D AMF2815D AMF2805D AMF2812D AMF2815D Output Current
1, 2
1 1 1 2, 3 2, 3 2, 3
Vin = 28 Volts, 10% load on both outputs
4.95 5.00 5.05 11.88 12.00 12.12 14.85 15.00 15.15 4.90 11.76 14.70 5.10 12.24 15.30
V
AMF2805D AMF2812D AMF2815D Output Power
1, 2
1, 2, 3 1, 2, 3 1, 2, 3
Vin = 16, 28, 40 Volts each output each output each output Vin = 28 Volts, 100% load
240 100 80
2160 900 720
mA
AMF2805D AMF2812D AMF2815D Output Ripple Voltage AMF2805D AMF2812D AMF2815D Output voltage Regulation Line
3 1, 3
1, 2, 3 1, 2, 3 1, 2, 3 Vin = 16, 28, 40 Volts, 100% load, BW = 20 Hz to 2 MHz
12 12 12
W
1, 2, 3 1, 2, 3 1, 2, 3
25 25 25
60 60 60
mVPP
AMF2805D AMF2812D AMF2815D AMF2805D AMF2805D AMF2805D
1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3
Vin = 16, 28, 40 Volts Iout = 10, 50%, and 100% load
10 10 10 10 10 10
25 50 50 50 50 50
Load
mV
For Notes to Specifications, refer to page 5
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AMF28XXD Series
Static Characteristics (Continued)
Parameter Cross Regulation
5
-55C TCASE +125C, VIN=28VDC 5%, CL=0, unless otherwise specified.
Group A Subgroups
Test Conditions Minimum 1.0 watt on both outputs 10%-90% load
Min
Nom
Max 10 3.0 3.0
Unit
AMF2805D AMF2812D AMF2815D Input Current No Load
1, 2, 3 1, 2, 3 1, 2, 3
%
AMF2805D AMF2812D AMF2815D AMF2805D AMF2812D AMF2815D
3
1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3
Vin=28V, Iout=0, Inhibit (pin 1)=open
35 35 35 8.0 8.0 8.0
60 60 60 12 12 12
mA
Inhibit
Inhibit (pin 1) shorted to input return (pin 7)
Input Ripple Current AMF2805D AMF2812D AMF2815D Efficiency
3
1, 2, 3 1, 2, 3 1, 2, 3
Vin = 16, 28, 40 Volts, 100% load, BW = 20 Hz to 2 MHz
20 20 20
50 50 50
mAPP
100% load AMF2805D AMF2812D AMF2815D AMF2805D AMF2812D AMF2815D 1, 3 1, 3 1, 3 2 2 2 1
5, 6
76 77 78 72 74 74
%
Isolation
Input to output or any pin to case (except pin 6) at 500Vdc No effect on dc performance, total for both outputs
100
M
Capacitive Load
4 AMF2805D AMF2812D AMF2815D
500 200 200 6.0
F
Short Circuit Power Dissipation
1, 2, 3
W Khrs
MTBF
MIL-HDBK-217F, SF @ Tc=35C
750
Weight
36
g
For Notes to Specifications, refer to page 5
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AMF28XXD Series
Dynamic Characteristics
Parameter Short Circuit Recovery
6
-55C TCASE +125C, VIN=28VDC 5%, CL=0, unless otherwise specified.
Group A Subgroups 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 Test Conditions 0% load to 100% Load Min Nom Max 25 25 25 500 550 600 Unit
AMF2805D AMF2812D AMF2815D Switching Frequency
3
ms
100% load
KHz
Synchronization Input
3
Frequency Range Pulse Amplitude, Hi 6 Pulse Amplitude, Lo 6 Pulse Rise time 6 Pulse Duty Cycle 6 Output Response To Step Transient Load Changes 3, 7
4, 5, 6
500 2.5 -0.5 20
700 10 0.8 100 80
KHz V V ns %
4, 5, 6 4, 5, 6 Recovery Time, Step Transient Load 3, 7, 8 Changes
Load step 50%U100% Load step 10%
-200 --800
+200 +800
U 50% U50%
mVpk
4, 5, 6 4, 5, 6
Load step 50%U100% Load step 10%
70 2000
s
Output Response Transient Step Line 3, 6, 9 Changes AMF2805D AMF2812D AMF2815D Recovery Time Transient Step Line 3, 6, 9 Changes Turn On Overshoot
3, 10
Input step 16U to 40Vdc, 100% Load 4, 5, 6 4, 5, 6 4, 5, 6 Input step 16 100% load -450 -750 -750 +450 +750 +750 mVpk
U 40Vdc,
1200 s 600 400 300 300
4, 5, 6
All AMF2805D AMF2812D AMF2815D
4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6
0% load 100% load
mVpk
Turn On Delay
3, 10
4, 5, 6
0% load to 100% load
25
ms
For Notes to Specifications, refer to page 5
4
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AMF28XXD Series
Notes to Specifications
1. 2. 3. 4. 5. Applicable to positive and negative outputs. Maximum combined output is 12W. 10.8W (max.) is available from either output (90%). Load current split equally between +VOUT and -VOUT. 1.2W load on output under test, 1.2W to 10.8W load change on other output. Capacitive value may be any value from 0 to the maximum limit without compromising DC performance. A capacitive load in excess of the maximum limit will not disturb loop stability but may interfere with the operation of the load fault detection circuitry, appearing as a short circuit during turn-on. 6. Parameter shall be tested as part of design characterization and after design or process changes. Thereafter, parameters shall be guaranteed to the limit specified. 7. Load step transition time between 2.0s and 10s. 8. Recovery time is measured from initiation of the transient to where Vout has returned to within 1% of Vout at 50% load. 9. Input step transient time between 1.0s and 10s. 10. Turn-on delay time measurement is for either a step application of power at the input or the removal of a ground signal from the inhibit pin while power is applied to the input.
Block Diagram
8
+Input
EMI Filter
3
+Output Output Return
4
1
Enable
6
Primary Housekeeping Supply
5
- Output
Case
2
Drive
Sync Input Input Return
7
Pulse Width FB Modulator
CS
Error Amp & Ref
Application Information
Inhibit Function (Enable)
Connecting the enable input (Pin 1) to input common (Pin 7) will cause the converter to shut down. It is recommended that the enable pin be driven by an open collector device capable of sinking at least 400 A of current. If the user chooses not to use the inhibit function, it may be left open and the converter will function normally. Because it is internally pulled up, the open circuit voltage of the inhibit input is 10 +1.0VDC.
Device Synchronization
When multiple DC/DC converters are utilized in a single system, significant low frequency noise may be generated due to a small difference in the switching frequency of the converters (beat frequency noise). Because of the low frequency nature of this noise (typically less than 10KHz), it is difficult to filter out and may interfere with proper operation of sensitive systems (communication, radar or telemetry). International Rectifier provides synchronization of multiple AMF type converters to match switching frequency of the converter to the frequency of the system clock, thus eliminating this type of noise.
EMI Filter
An optional EMI filter is available (AFH461) that will reduce the input ripple current to levels below the limits imposed by MIL-STD-461 CE03.
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AMF28XXD Series
Mechanical Outline
1.130 O 0.140
0.17
0.03D x 0.25L 8 Pins
6
1.850 1.600
4
5
2.10 0.600 0.800 1.000
7
2
3
0.400 8 1
0.19 1.380 0.33
Tolerance unless otherwise specified: x.xx 0.010 x.xxx 0.005
Pin Designation
Pin # 1 2 3 4 5 6 7 8 Designation Enable Sync Input + Output Output Return - Output Case Ground Input Return + Input
Radiation Specification
Parameter Total Ionizing Dose
Condition
MIL-STD-883, Method 1019.4 Operating bias applied during exposure BNL Dual Van de Graf Generator
Min
30
Typ
--
Max
--
Unit
KRads (Si) MeV *cm /mg
2
Heavy Ion (Single event effects)
60
--
--
International Rectifier currently does not have a DSCC certified Radiation Hardness Assurance Program.
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AMF28XXD Series
Device Screening
Requirement
Temperature Range Element Evaluation Non-Destructive Bond Pull Internal Visual Temperature Cycle Constant Acceleration PIND Burn-In Final Electrical ( Group A ) PDA Seal, Fine and Gross Radiographic External Visual MIL-PRF-38534 2023 2017 1010 2001, Y1 Axis 2020 1015 MIL-PRF-38534 & Specification MIL-PRF-38534 1014 2012 2009
MIL-STD-883 Method
No Suffix
Class H N/A Yes Cond C 3000 Gs Cond A
d
CH
d
EM
-55C to +85C N/A N/A
-55C to +125C
-55C to +125C Class H N/A Yes Cond C 3000 Gs Cond A 320 hrs @ 125C ( 2 x 160hrs ) -55C, +25C, +125C 2% Cond A, C Yes Yes
c
Cond C 3000 Gs N/A 48 hrs @ 125C -55C, +25C, +85C N/A Cond A N/A
320 hrs @ 125C ( 2 x 160hrs ) -55C, +25C, +125C 2% Cond A, C Yes Yes
c
Notes:
Best commercial practice. Device with `/CH' suffix is a DSCC class H compliant without radiation performance. No suffix is a radiation rated device but not available as a DSCC qualified SMD per MIL-PRF-38534. International Rectifier currently does not have a DSCC certified Radiation Hardness Assurance Program.
Standard Microcircuit Drawing Equivalence Table Standard Microcircuit IR Standard Drawing Number Part Number
5962-05222 5962-05223 AMF2812D AMF2815D
Part Numbering AMF 28 05 D /EM
Model Input Voltage
28 = 28V
Screening Level
(Please refer to Screening Table)
No Suffix, CH, EM
Output
S = Single D = Dual
Output Voltage
05 = 5V 12 = 12V 15 = 15V
WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 252-7105 IR SANTA CLARA: 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. 09/2008
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