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PD-94692E
AMA28XXD SERIES HYBRID - HIGH RELIABILITY RADIATION TOLERANT DC-DC CONVERTER
Description
The AMA28XXD 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 AMA28XXD Series. The physical configuration of the AMA28XXD 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 AMA28XXD 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-PRF38534, 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. Variations to the standard screening can be accomodated. Consult IR San Jose for special requirements.
28V Input, Dual Output
AMA Features
n n n n n n n n n n n 5.0 Watts Output Power Available in 5, 12 and 15 Volt Outputs 16- 40 VDC Input Range (28 VDC Nominal) 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 Fully Isolated - Input to Output and to Case Complimentary EMI Filter Available Electrical Performance Similar to ASA28XXD Series n Standard Microcircuit Drawings Available
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08/17/10
AMA28XXD Series Specifications
Absolute Maximum Ratings
Input Voltage range Soldering temperature Storage case temperature 80V (100ms) 300C for 10 seconds -65C to +135C
-55C TCASE +125C, VIN = 28VDC 5%, CL= 0, unless otherwise specified.
Recommended Operating Conditions
+16V to +40VDC Less than or equal to 5W -55C to +125C Output Power Operating case temperature
-0.5V to +50VDC (Continuous), Input Voltage range
Static Characteristics
Parameter Input Voltage Output Voltage
Group A Subgroups
Test Conditions
Min 16
Nom 28
Max 40
Unit V
AMA2805D AMA2812D AMA2815D AMA2805D AMA2812D AMA2815D Output Current
1, 2
1 1 1 2, 3 2, 3 2, 3
Vin = 28 Volts, 20% 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
AMA2805D AMA2812D AMA2815D Output Power
1, 2
1, 2, 3 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 Vin = 16, 28, 40 Volts 100% load BW = 20 Hz to 2 MHz
200 83 67
800 333 267 5.0
mA
W
Output Ripple Voltage AMA2805D AMA2812D AMA2815D Output Voltage Regulation Line
3
1, 3
1, 2, 3 1, 2, 3 1, 2, 3
200 200 290
mVPP
AMA2805D AMA2812D AMA2815D AMA2805D AMA2812D AMA2815D
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%, 100% load
10 10 10 10 10 10
25 50 50 50 50 50
mV
Load
For Notes to Specifications, refer to page 4
2
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AMA28XXD Series
Static Characteristics (Continued)
Parameter Cross Regulation
5
-55C TCASE +125C, VIN= 28VDC 5%, CL = 0, unless otherwise specified.
Group A Subgroups 1, 2, 3 1, 2, 3 1, 2, 3
Test Conditions Minimum 1.0 watt on both outputs 20%-80% load
Min
Nom
Max 15 8.0 8.0
Unit
AMA2805D AMA2812D AMA2815D Input Current No Load Inhibit
3
%
1, 2, 3 1, 2, 3
Vin=28V, Iout=0, Inhibit (pin 5)=open Inhibit (pin 5) shorted to input return (pin 7) Vin = 16, 28, 40 Volts, 100% load, BW = 20 Hz to 2 MHz
35
60 mA 12
Input Ripple Current AMA2805D AMA2812D AMA2815D Efficiency
3
1, 2, 3 1, 2, 3 1, 2, 3
100 100 100
mAPP
100% load AMA2805D AMA2812D AMA2815D AMA2805D AMA2812D AMA2815D 1, 3 1, 3 1, 3 2 2 2 1
5, 6
66 71 71 60 68 68 Input to output or any pin to case (except pin 8) at 500Vdc No effect on dc performance, total for both outputs 100 %
Isolation
M
Capacitive Load
AMA2805D AMA2812D AMA2815D Short Circuit Power Dissipation
4 4 4 1, 2, 3
500 200 200 4.0
F
W Khrs
MTBF Weight
MIL-HDBK-217F, SF @ 70C
750 32
g
For Notes to Specifications, refer to page 4
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AMA28XXD Series Dynamic Characteristics
Parameter Short Circuit Recovery Switching Frequency
3 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 4, 5, 6 4, 5, 6
Test Conditions 0% load to 100% load 100% load Load step 50%U 100% Load step 0% 50%
Min
Nom
Max 25
Unit ms KHz
mV pk
500
550
600 +400 +800 100 2000
Output Response To Step 3, 7 Transient Load Changes Recovery Time, Step Transient 3, 7, 8 Load Changes Output Response Transient Step 3, 6, 9 Line Changes AMA2805D AMA2812D AMA2815D Recovery Time Transient Step Line 3, 6, 9 Changes Turn On Overshoot
3, 10
U
-400 -800
Load step 50%U 100% Load step 0% 50%
U
s
4, 5, 6 4, 5, 6 4, 5, 6
Input step 16 100% load
U 40Vdc,
-550 -750 -750
+550 +750 +750 1200
mV pk
4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6
Input step 16 40Vdc, 100% load 0% load 100% load 0% load to 100% load
s
mV pk
600 400 25
Turn On Delay
3, 10
ms
Notes to Specifications
Applicable to positive and negative outputs. Maximum combined output is 5.0 watts. 4.0 watts (max.) is available from either output (80%). Load current split equally between +VOUT and -VOUT. 1.0 watt load on output under test, 1.0 watt to 4.0 watt 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 and 10 microseconds. 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 and 10 microseconds. 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. 1. 2. 3. 4. 5.
4
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AMA28XXD Series Block Diagram
+Input 6 +Output 1 Output Return 2 -Output 3
Housekeeping Supply
Input Return 7 Enable 5
CS
Error Amplifier Case 8
Controller
Application Information
Inhibit Function (Enable)
Connecting the enable input (Pin 5) 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 inhibit input is 10 +1.0 VDC.
Thermal Considerations
Irrespective of the fact that the AMA28XXD series of converters are relatively low power devices and are designed to provide efficient voltage conversion, there will be some heat generated during normal operation. To avoid a continuous thermal rise that may eventually exceed the maximum case temperature rating and to maintain a safe operating environment for the internal components, these converters should be attached to a heat conducting surface allowing a continuous flow of the heat away from the base plate. This becomes more important when operating in the near vacuum environment of space which provides no alternate heat radiating path.
EMI Filter
An optional EMI filter is available (ASF461 or AFH461) will reduce the input ripple current to levels below the limits imposed by MIL-STD-461 CE03.
Radiation Specification
Parameter
Condition MIL-STD-883, Method 1019.4 Operating bias applied during exposure BNL Dual Van de Graf Generator
Min 25 60
Typ
-- --
Max
-- --
Unit KRads (Si) MeV*cm2 /mg
Total Ionizing Dose Heavy Ion (Single event effects)
International Rectifier currently does not have a DSCC certified Radiation Hardness Assurance Program.
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AMA28XXD Series Mechanical Outline
0.800 0.400 0.200 0.17 0.33 0.170
0.25 Typ O 0.140 x3
5 3 2 1 0.26 Typ
0.880
1.130
6
7
8
0.125 1.130 1.380 1.63
0.030 Dia
Tolerance unless otherwise specified: x.xx 0.010 x.xxx 0.005
Pin Designation
Pin # 1 2 3 4 5 6 7 8 Designation + Output Output Return - Output Blank Enable + Input Input Return Case Ground
6
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AMA28XXD 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
5962-04250 5962-04251 AMA2812D AMA2815D
Part Numbering AMA 28 05 D /EM
Model Input Voltage
28 = 28V
Screening Level
(Please refer to Screening Table)
No Suffix, CH, EM
Output Voltage
05 = 5V 12 = 12V 15 = 15V
Output
S = Single D = Dual
WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 252-7105 IR SAN JOSE: 2520Junction Avenue, San Jose, California 95134, Tel: (408) 434-5000 Visit us at www.irf.com for sales contact information. Data and specifications subject to change without notice. 08/2010
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