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PD-94689B
AMF28XXS SERIES HYBRID - HIGH RELIABILITY RADIATION TOLERANT DC/DC CONVERTER
Description
The AMF28XXS 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 ART, ARH and G-Series converters. 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 AMF28XXS Series. The physical configuration of the AMF28XXS series permits mounting directly to a heat dissipation 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 AMF28XXS 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, Single Output
AMF Features
n n n n n n n n n n n n n n 12 Watts Output Power Available in 3.3, 5, 7.5, 12 and 15 Volt Outputs 16 - 40 VDC Input Range (28 VDC Nominal) Low Input/Output Noise Total Ionizing Dose > 25KRads (Si) 2 SEE Hardened to LET up to 60 MeV.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 Synchronizable From An External Source Electrical Performance Similar to AHF28XXS Series n Standard Microcircuit Drawings Available
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1
09/15/08
AMF28XXS 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=28 VDC 5%, C L=0, unless otherwise specified.
Group A Subgroups
Test Conditions
Min 16
Nom 28
Max 40
Unit V
Vin = 28 Volts, 0% load AMF2803R3S AMF2805S AMF2807R5S AMF2812S AMF2815S AMF2803R3S AMF2805S AMF2807R5S AMF2812S AMF2815S 1 1 1 1 1 2, 3 2, 3 2, 3 2, 3 2, 3 Vin = 16, 28, 40 Volts AMF2803R3S AMF2805S AMF2807R5S AMF2812S AMF2815S 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 Vin = 16, 28, and 40 Vdc AMF2803R3S All Others 1, 2, 3 1, 2, 3 1, 2, 3 Vin = 16, 28, 40 Volts, BW = 20 Hz to 2 MHz Vin = 16, 28, 40 Volts Iout = 0%, 50%, and 100% max 25 10 12 60 W 0 0 0 0 0 3000 2400 1600 1000 800 mA 3.25 4.95 6.97 11.88 14.85 3.20 4.90 7.35 11.76 14.70 3.30 5.00 7.50 12.00 15.00 3.35 5.05 7.58 12.12 15.15 3.40 5.10 7.65 12.24 15.30
V
Output Current
1
Output Power
1
Output Ripple Voltage
2
mVPP
Output Voltage Regulation Line AMF2803R3S AMF2805S AMF2807R5S AMF2812S AMF2815S Load All
1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3
10 10 10 10 10 10
25 25 50 50 50 50
mV
For Notes to Specifications, refer to page 5
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AMF28XXS Series
Static Characteristics (Continued)
Parameter Input Current No Load
-55C TCASE +125C, VIN=28 VDC 5%, CL=0, unless otherwise specified.
Group A Subgroups 1, 2, 3
Test Conditions Vin=28V, Iout=0, Inhibit (pin 1)=open (AMF2812S and AMF2815S) (All other Models) Inhibit (pin 1) shorted to input return (pin 7) (All Models) Vin = 16, 28, 40 Volts, 100% load, BW = 20 Hz to 2 MHz
Min
Nom
Max
Unit
30 20 8.0 20
50 30 12 50
mA
Inhibit Input Ripple Current
1, 2, 3
1, 2, 3 Efficiency AMF2803R3S AMF2805S AMF2807R5S AMF2812S AMF2815S AMF2803R3S AMF2805S AMF2807R5S AMF2812S AMF2815S Isolation
3, 4
mAPP
1, 3 1, 3 1, 3 1, 3 1, 3 2 2 2 2 2 1
100% load
72 76 77 78 78 70 72 73 75 75 %
Input to output or any pin to case (except pin 6) at 500Vdc
100
M
Capacitive Load
AMF2803R3S AMF2805S AMF2807R5S AMF2812S AMF2815S Short Circuit Power Dissipation
4
4 4 4 4 4 1, 2, 3
No effect on dc performance
500 500 300 200 200 6.0
F
W
Short Circuit Recovery
4, 5, 6 Switching Frequency MTBF 4, 5, 6
0% load to 100% Load 100% load MIL-HDBK-217F SF @ Tc = 35C 500 750 550
20 600
ms KHz Khr
Weight
36
g
For Notes to Specifications, refer to page 5
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AMF28XXS Series
Dynamic Characteristics
Parameter Synchronization Input Frequency Range Pulse Amplitude, Hi 4 Pulse Amplitude, Lo 4 Pulse Rise time 4 Pulse Duty Cycle 4 Output Response To Step 5 Transient Load Changes All AMF2803R3S AMF2805S AMF2807R5S AMF2812S AMF2815S Recovery Time, Step Transient 5, 6 Load Changes AMF2803R3S AMF2805S AMF2807R5S AMF2812S AMF2815S All Output Response Transient Step 4, 7 Line Changes AMF2803R3S AMF2805S AMF2807R5S AMF2812S AMF2815S Recovery Time Transient Step Line Changes 4, 7 Turn On Overshoot
8
-55C TCASE +125C, VIN=28 VDC 5%, CL=0, unless otherwise specified.
Group A
Subgroups
Test Conditions
Min 500 2.5 -0.5 20
Nom
Max 700 10 0.8 100 80
Unit KHz V V ns %
4, 5, 6
4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6
Load step 50%U 100% Load step 0%
-300 -400 -500 -750 -750 -750
+300 +400 +500 +750 +750 +750 mVpk
U 50%
4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6
Load step 50%U 100%
Load step 0%
U 50%
-500 -500 -1200 -1500 -1500
70 70 100 100 100 2.0
s
ms
4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6
Input step 16 40Vdc 100% Load
+500 +500 +1200 +1500 +1500 800
mVpk
Input step 16 40Vdc, 100% load
s
AMF2803R3S AMF2805S AMF2807R5S AMF2812S AMF2815S Turn On Delay 8
4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6
0% load to 100% load
400 600 600 600 750 20
mVpk
0% load to 100% load
ms
For Notes to Specifications, refer to page 5
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AMF28XXS Series
Notes to Specifications
1 Parameter guaranteed by line and load regulation tests. 2 Bandwidth guaranteed by design. Tested for 20Hz to 2.0MHz. 3 Capacitive load 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. 4 Parameter shall be tested as part of design characterization and after design or process changes. Therefore this Parameters shall be guaranteed to the limit specified. 5 Load step transition time between 2.0 and 10 microseconds. 6 Recovery time is measured from the initiation of the transient to where VOUT has returned to within 1 % of VOUT at 50 percent load. 7 Input step transition time between 1.0 and 10 microseconds. Parameter guaranteed by design but not 100% tested. 8 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 Under-Voltage Detector
EMI Filter +Output
3
Output Return Primary Housekeeping Supply
4
1
Enable
6
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. The open circuit voltage of the enable input is 10 +1.0 VDC.
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 10 KHz), it is difficult to filter out and may interfere with proper operation of sensitive systems (communication, radar or telemetry). Interenational 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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AMF28XXS 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 NC 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 25 Typ -- Max -- Unit KRads (Si) MeV *cm2 /mg
Heavy Ion (Single event effects)
60
--
--
International Rectifier currently does not have a DSCC certified Radiation Hardness Assurance Program.
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AMF28XXS 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 Model
5962-04252 5962-04253 5962-04254 AMF2805S AMF2812S AMF2815S
28 = 28V
Part Numbering AMF 28 05 S /EM
Screening Level
(Please refer to Screening Table)
Input Voltage Output Voltage
03R3 = 3.3V, 05 = 5V 07R5 = 7.5V, 12 = 12V 15 = 15V
No suffix, CH, EM
Output
S = Single D = Dual
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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