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PDF AMR2805D Data sheet ( Hoja de datos )
| Número de pieza | AMR2805D | |
| Descripción | HYBRID-HIGH RELIABILITY RADIATION TOLERANT DC-DC CONVERTER | |
| Fabricantes | International Rectifier | |
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HYBRID-HIGH RELIABILITY
RADIATION TOLERANT
DC-DC CONVERTER
PD-94690E
AMR28XXD SERIES
28V Input, Dual Output
Description
The AMR28XXD 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 AMR28XXD series.
The physical configuration of the AMR28XXD 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 hermetically
The AMR28XXD has been designed for high density using chip
and wire hybrid technology that complies with class H
requirement of MIL-PRF-38534. Manufactured in a facility
fully qualified to MIL-PRF-38534, these converters are
fabricated utilizing DLA Land and Maritime 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 accommodated. Consult IR HiRel San Jose for
special requirements.
AMR
Features
30 Watts Output Power
Available in ± 5, ±12 and ±15 Volt Outputs
16- 40 VDC Input Range (28 VDC Nominal)
Total Ionizing Dose > 25 kRads(Si)
SEE Hardened to LET up to 60 MeVcm2/mg
-55°C to +125°C Operating Range
Indefinite Short Circuit Protection
External Synchronization
Shutdown from External Signal
Flexible Mounting
Fully Isolated - Input to Output and to Case
Complimentary EMI Filter Available
Electrical Performance Similar to ATR28XXD Series
1 2016-06-29
1 page  
AMR28XXD SERIES
(28V Input, Dual Output)
Notes to Specifications
1. Parameter guaranteed by line and load regulation tests.
2. Up to 90 percent of full power is available from either output provided the total output does not exceed 30 watts.
3. Bandwidth guaranteed by design, Tested for 20 Hz to 2 MHz.
4. Load current split equally between +VOUT and –VOUT.
5. 3 watt load on output under test. 3 watt to 27 watt load change on other output.
6. 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.
7. Parameter shall be tested as part of design characterization and after design or process changes, Parameters shall be guaranteed
to the limit specified in Electrical Specifications
8. Load step transition time between 2 and 10 microseconds.
9. Recovery time is measured from initiation of the transient to where Vout has returned to within ±1% of Vout at 50% load.
10. Input step transient time between 2 and 10 microseconds.
11. 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
+Input
EMI
Filter
Under-Voltage
Detector
3
Enable
5
Case
10
Sync
Input
Input
Return
2
Block Diagram
Primary
Housekeeping
Supply
Drive
Pulse Width
Modulator FB
CS
Error
Amp &
Ref
8 +Output
7
Output
Return
6 -Output
Application Information
Inhibit Function (Enable)
Connecting the inhibit input to input common will cause the
converter to shut down. It is recommended that the inhibit
pin be driven by an open collector device capable of sinking
at least 400 µA of current. The open circuit voltage of the
inhibit input is 10 ±1.0 VDC.
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.
5
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). IR
HiRel provides synchronization of multiple AMR
type converters to match switching frequency of the
converter to the frequency of the system clock, thus
eliminating this type of noise.
2016-06-29
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet AMR2805D.PDF ] | |
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