PD-94690D
AMR28XXD SERIES
HYBRID - HIGH RELIABILITY
RADIATION TOLERANT
DC-DC CONVERTER
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
hermeticity.
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 San
Jose for special requirements.
28V Input, Dual Output
AMR
Features
n
n
n
n
n
n
n
n
n
n
n
n
n
30 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
-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
www.irf.com
1
10/30/12
AMR28XXD Series
(28V Input, Dual Output)
Specifications
Absolute Maxim um Ratings
Input Voltage range
Soldering temperature
Storage case temperature
80V (100ms)
300°C for 10 seconds
-65°C to +135°C
Recom mended Operating Conditions
+16V to +40VD C
Less than or equal to 30W
-55°C to +125°C
Output Power
Operating case temperature
-0.5V to +50VD C (Continuous), Input Voltage range
Static Characteristics
Parameter
Input Voltage
Output Voltage
-55°C
≤
TCASE
≤
+125°C, VIN=28 V DC
±5%,
C
L
=0, unless otherwise specified.
Group A
Subgroups
Test Conditions
Min
16
Nom
28
Max
40
Unit
V
Iout=0
AMR2805D
AMR2812D
AMR2815D
AMR2805D
AMR2812D
AMR2815D
1
1
1
2, 3
2, 3
2, 3
Vin = 16, 28, 40 Volts
AMR2805D
AMR2812D
AMR2815D
1, 2, 3
1, 2, 3
1, 2, 3
100% load
AMR2805D
AMR2812D
AMR2815D
1, 2, 3
1, 2, 3
1, 2, 3
Vin = 16, 28, 40 Volts
BW = 20 Hz to 2 MHz
±4.95 ±5.00 ±5.05
±11.88 ±12.00 ±12.12
±14.85 ±15.00 ±15.15
±4.90
±11.70
±14.70
±5.10
±12.30
±15.30
V
Output Current
1, 2
600
250
200
5400
2250
1800
mA
Output Power
30
30
30
W
Output Ripple Voltage
3
AMR2805D
AMR2812D
AMR2815D
Output Voltage Regulation
Line
4
1, 2, 3
1, 2, 3
1, 2, 3
60
85
85
mV
PP
AMR2805D
AMR2812D
AMR2815D
AMR2805D
AMR2812D
AMR2815D
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
Vin = 16, 28, 40 Volts
Iout = 0, 50%, and 100% load
±10
±30
±40
±10
±50
±50
±30
±75
±75
±50
±120
±150
mV
Load
For Notes to Specifications, refer to page 5
2
www.irf.com
AMR28XXD Series
(28V Input, Dual Output)
Static Characteristics
(Continued) -55°C
≤
TCASE
≤
+125°C, VIN=28 VDC
±5%,
C
L
=0,unless
Group A
Parameter
Cross Regulation
5
otherwise pecified.
Subgroups
Test Conditions
10% TO 90% Load change
Min
Nom
Max
10
5.0
5.0
Unit
AMR2805D
AMR2812D
AMR2815D
Input Current
No Load
AMR2805D
AMR2812D
AMR2815D
AMR2805D
AMR2812D
AMR2815D
3, 4
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
Iout=0, Inhibit =open
20
20
20
8.0
8.0
8.0
%
70
75
100
mA
15
18
18
Inhibit
Inhibit shorted to input return
Input Ripple Current
4
1, 2, 3
Vin = 16, 28, 40 Volts, 100%
load, BW = 20 Hz to 2 MHz
100% load
50
mA
PP
Efficiency
AMR2805D
AMR2812D
AMR2815D
AMR2805D
AMR2812D
AMR2815D
Isolation
1
1
1
2, 3
2, 3
2, 3
1
Input to output or any pin to
case (except case ground pin)
at 500Vdc
No effect on dc performance
76
80
79
72
75
74
100
%
MΩ
Capacitive Load
6, 7
4
1, 2, 3
4, 5, 6
4, 5, 6
200
9.0
µF
W
KHz
KHz
Khrs
Short Circuit Power Dissipation
Switching Frequency
4
Sync frequency range
MTBF
100% load
100% load
MIL-HDBK-217F, SF@
Tc=35°C
500
500
800
550
600
700
Weight
68
g
For Notes to Specifications, refer to page 5
www.irf.com
3
AMR28XXD Series
(28V Input, Dual Output)
Dynamic Characteristics
Parameter
Output Response To Step
4, 9
Transient Load Changes
AMR2805D
AMR2812D
AMR2815D
AMR2805D
AMR2812D
AMR2815D
Recovery Time, Step Transient
4, 9, 10
Load Changes
AMR2805D
AMR2812D
AMR2815D
AMR2805D
AMR2812D
AMR2815D
AMR2805D
AMR2812D
AMR2815D
Output Response Transient Step
4, 7, 11
Line Changes
AMR2805D
AMR2812D
AMR2815D
Recovery Time Transient Step Line
4, 7, 10, 11
Changes
AMR2805D
AMR2812D
AMR2815D
Turn On Overshoot
4
-55°C
≤
TCASE
≤
+125°C, VIN=28 V DC
±5%,
C
L
=0, unless otherwise specified.
Group A
Subgroups
Test Conditions
Min
Nom
Max
Unit
Load step 50%
4, 5, 6
4, 5, 6
4, 5, 6
4, 5, 6
4, 5, 6
4, 5, 6
Ù
100%
Load step 0%
Ù
50%
Ù
100%
-400
-400
-400
-400
-800
-800
+400
+400
+400
+400
+800
+800
mV pk
4, 5, 6
4, 5, 6
4, 5, 6
4, 5, 6
4, 5, 6
4, 5, 6
4, 5, 6
4, 5, 6
4, 5, 6
Load step 50%
70
70
70
500
500
500
5
5
5
µs
Load step 0% => 50%
Load step 50% => 0%
µs
ms
4, 5, 6
4, 5, 6
4, 5, 6
Input step from/to 16 to 40Vdc,
100% load
-500
-1200
-1500
+500
+1200
+1500
mV pk
4, 5, 6
4, 5, 6
4, 5, 6
Input step from/to 16 to 40Vdc,
100% load
10
10
10
ms
AMR2805D
AMR2812D
AMR2815D
Turn On Delay
4, 12
4, 5, 6
4, 5, 6
4, 5, 6
4, 5, 6
4, 5, 6
4, 5, 6
0% load to 100% load
450
600
750
25
25
25
mV pk
AMR2805D
AMR2812D
AMR2815D
Short Circuit Recovery
7
0% load to 100% load
ms
AMR2805D
AMR2812D
AMR2815D
4, 5, 6
4, 5, 6
4, 5, 6
25
25
25
ms
For Notes to Specifications, refer to page 5
4
www.irf.com
AMR28XXD Series
(28V Input, Dual Output)
Notes to Specifications
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Parameter guaranteed by line and load regulation tests.
Up to 90 percent of full power is available from either output provided the total output does not exceed 30 watts.
Bandwidth guaranteed by design, Tested for 20 Hz to 2 MHz.
Load current split equally between +V
OUT
and –V
OUT
.
3 watt load on output under test. 3 watt to 27 watt load change on other output.
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.
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.
Load step transition time between 2 and 10 microseconds.
Recovery time is measured from initiation of the transient to where V
out
has returned to within
±1%
of Vout at
50% load.
Input step transient time between 2 and 10 microseconds.
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
1
+Input
Under-Voltage
Detector
EMI
Filter
8
+Output
7
Output
Return
3
Enable
5
Primary
Housekeeping
Supply
6
-Output
Case
10
Drive
Sync
Input
Input
Return
2
Pulse Width
FB
Modulator
CS
Error
Amp &
Ref
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 V
DC
.
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). International Rectifier 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.
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.
www.irf.com
5
DIY/Open Source Hardware
京公网安备 11010802033920号
EEWORLD
