IRF AMF28XXD_08

PD-94688C
AMF28XXD SERIES
28V Input, Dual Output
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.
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AMF
Features
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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
-55°C to +125°C 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
1
09/15/08
AMF28XXD Series
Specifications
Absolute Maximum Ratings
Recommended Operating Conditions
Input Voltage range
-0.5V to +50VDC
Input Voltage range
+16V to +40VDC
Soldering temperature
300°C for 10 seconds
Output Power
Less than or equal to 12W
Storage case temperature
-65°C to +135°C
Operating case temperature
-55°C to +125°C
Static Characteristics
-55°C ≤ TCASE ≤ +125°C, VIN=28VDC ±5%, CL=0, unless otherwise specified.
Group A
Subgroups
Parameter
Test Conditions
Input Voltage
Output Voltage
Output Current
Output Power
AMF2805D
AMF2812D
AMF2815D
1
1
1
AMF2805D
AMF2812D
AMF2815D
2, 3
2, 3
2, 3
AMF2805D
AMF2812D
AMF2815D
1, 2, 3
1, 2, 3
1, 2, 3
AMF2805D
AMF2812D
AMF2815D
1, 2, 3
1, 2, 3
1, 2, 3
1, 2
1, 2
Vin = 28 Volts, 10% load on
both outputs
Vin = 16, 28, 40 Volts
each output
each output
each output
Min
Nom
Max
Unit
16
28
40
V
±4.95 ±5.00 ±5.05
±11.88 ±12.00 ±12.12
±14.85 ±15.00 ±15.15
V
±4.90
±11.76
±14.70
±5.10
±12.24
±15.30
240
100
80
2160
900
720
mA
12
12
12
W
25
25
25
60
60
60
mVPP
±10
±10
±10
±25
±50
±50
±10
±10
±10
±50
±50
±50
Vin = 28 Volts, 100% load
1, 3
Output Ripple Voltage
AMF2805D
AMF2812D
AMF2815D
Output voltage Regulation
1, 2, 3
1, 2, 3
1, 2, 3
Vin = 16, 28, 40 Volts,
100% load,
BW = 20 Hz to 2 MHz
3
Line
AMF2805D
AMF2812D
AMF2815D
1, 2, 3
1, 2, 3
1, 2, 3
Load
AMF2805D
AMF2805D
AMF2805D
1, 2, 3
1, 2, 3
1, 2, 3
Vin = 16, 28, 40 Volts
Iout = 10, 50%, and 100%
load
mV
For Notes to Specifications, refer to page 5
2
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AMF28XXD Series
Static Characteristics (Continued)
Parameter
Cross Regulation
-55°C ≤ TCASE ≤ +125°C, VIN=28VDC ±5%, CL=0, unless otherwise specified.
Group A
Subgroups
5
Input Current
No Load
Inhibit
AMF2805D
AMF2812D
AMF2815D
1, 2, 3
1, 2, 3
1, 2, 3
AMF2805D
AMF2812D
AMF2815D
1, 2, 3
1, 2, 3
1, 2, 3
AMF2805D
AMF2812D
AMF2815D
1, 2, 3
1, 2, 3
1, 2, 3
3
Input Ripple Current
AMF2805D
AMF2812D
AMF2815D
Efficiency
1, 2, 3
1, 2, 3
1, 2, 3
3
Min
Vin=28V,
Iout=0, Inhibit (pin 1)=open
Inhibit (pin 1) shorted to input
return (pin 7)
Vin = 16, 28, 40 Volts, 100%
load, BW = 20 Hz to 2 MHz
100% load
AMF2805D
AMF2812D
AMF2815D
1, 3
1, 3
1, 3
76
77
78
AMF2805D
AMF2812D
AMF2815D
2
2
2
72
74
74
Isolation
Capacitive Load
Test Conditions
5, 6
1
Input to output or any pin to
case (except pin 6) at 500Vdc
4
No effect on dc performance,
total for both outputs
AMF2805D
AMF2812D
AMF2815D
Short Circuit Power Dissipation
Weight
MIL-HDBK-217F, SF @
Tc=35°C
Max
Unit
10
3.0
3.0
%
35
35
35
60
60
60
8.0
8.0
8.0
12
12
12
20
20
20
50
50
50
mA
mAPP
%
100
1, 2, 3
MTBF
Nom
Minimum 1.0 watt on both
outputs 10%-90% load
MΩ
500
200
200
µF
6.0
W
750
Khrs
36
g
For Notes to Specifications, refer to page 5
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3
AMF28XXD Series
Dynamic Characteristics
-55°C ≤ TCASE ≤ +125°C, VIN=28VDC ±5%, CL=0, unless otherwise specified.
Group A
Subgroups
Parameter
Short Circuit Recovery
6
AMF2805D
AMF2812D
AMF2815D
Switching Frequency
3
Synchronization Input
4, 5, 6
4, 5, 6
4, 5, 6
4, 5, 6
Nom
Max
Unit
25
25
25
ms
600
KHz
20
700
10
0.8
100
80
KHz
V
V
ns
%
-200
+200
mVpk
--800
+800
0% load to 100% Load
100% load
500
4, 5, 6
Output Response To Step Transient
Load Changes 3, 7
4, 5, 6
4, 5, 6
Recovery Time, Step Transient Load
3, 7, 8
Changes
4, 5, 6
4, 5, 6
Output Response Transient Step Line
3, 6, 9
Changes
AMF2805D
AMF2812D
AMF2815D
4, 5, 6
4, 5, 6
4, 5, 6
Recovery Time Transient Step Line
3, 6, 9
Changes
4, 5, 6
Turn On Delay
Min
550
3
Frequency Range
Pulse Amplitude, Hi 6
Pulse Amplitude, Lo 6
Pulse Rise time 6
Pulse Duty Cycle 6
Turn On Overshoot
Test Conditions
500
2.5
-0.5
Ù100%
Load step 10% Ù 50%
Load step 50%
Ù100%
Load step 10% Ù50%
Input step 16Ù to 40Vdc,
Load step 50%
70
µs
2000
100% Load
-450
-750
-750
Input step 16
100% load
+450
+750
+750
mVpk
1200
µs
Ù 40Vdc,
3, 10
All
4, 5, 6
0% load
600
AMF2805D
AMF2812D
AMF2815D
4, 5, 6
4, 5, 6
4, 5, 6
100% load
400
300
300
mVpk
4, 5, 6
0% load to 100% load
25
ms
3, 10
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 2.0µs and 10µs.
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 1.0µs and 10µs.
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
3
EMI
Filter
+Output
4
1
Enable
Primary
Housekeeping
Supply
Output
Return
5
- Output
6
Case
2
Sync
Input
Drive
Pulse Width
FB
Modulator
Error
Amp &
Ref
CS
Input
Return
7
Application Information
Inhibit Function (Enable)
Device Synchronization
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
µA 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.
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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5
AMF28XXD Series
Mechanical Outline
1.130
Ø 0.140
0.17
5
3
4
6
7
0.03D x 0.25L
8 Pins
2.10
2
1.850 1.600
0.600
0.800
1
8
0.400
1.000
0.19
0.33
1.380
Tolerance unless otherwise specified:
x.xx ±0.010
x.xxx ±0.005
Pin Designation
Pin #
Designation
1
Enable
2
Sync Input
3
+ Output
4
Output Return
5
- Output
6
Case Ground
7
Input Return
8
+ Input
Radiation Specification
Parameter
Condition
Min
Typ
Max
Unit
KRads
(Si)
Total Ionizing Dose
MIL-STD-883, Method 1019.4
Operating bias applied during exposure
30
—
—
Heavy Ion
(Single event effects)
BNL Dual Van de Graf Generator
60
—
—
2
MeV •cm
/mg
International Rectifier currently does not have a DSCC certified Radiation Hardness Assurance Program.
6
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AMF28XXD Series
Device Screening
Requirement
MIL-STD-883 Method
Temperature Range
No Suffix
d
CH
d
EM
-55°C to +125°C
-55°C to +125°C
-55°C to +85°C
Element Evaluation
MIL-PRF-38534
Class H
Class H
N/A
Non-Destructive Bond Pull
2023
N/A
N/A
N/A
Internal Visual
2017
Yes
Yes
c
Temperature Cycle
1010
Cond C
Cond C
Cond C
Constant Acceleration
2001, Y1 Axis
3000 Gs
3000 Gs
3000 Gs
PIND
2020
Cond A
Cond A
N/A
320 hrs @ 125°C
320 hrs @ 125°C
48 hrs @ 125°C
Burn-In
1015
( 2 x 160hrs )
( 2 x 160hrs )
Final Electrical
MIL-PRF-38534
-55°C, +25°C,
-55°C, +25°C,
-55°C, +25°C,
( Group A )
& Specification
+125°C
+125°C
+85°C
PDA
MIL-PRF-38534
2%
2%
N/A
Seal, Fine and Gross
1014
Cond A, C
Cond A, C
Cond A
Radiographic
2012
Yes
Yes
N/A
External Visual
2009
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
Screening Level
Input Voltage
No Suffix, CH, EM
(Please refer to Screening Table)
28 = 28V
Output
Output Voltage
S = Single
D = Dual
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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