IRF AMF2815S/EM

PD - 94689
AMF28XXS SERIES
28V Input, Single Output
ADVANCED ANALOG
RADIATION TOLERANT
DC/DC CONVERTERS
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 Advanced Analog 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. Advanced
Analog’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. Finished product are fabricated in a facility fully qualified
to MIL-PRF-38534. The standard processing adopted
for the AMF28XXS meets the requirements of MIL-PRF38534 for class H but with enhanced screening steps
and includes element evaluation. Applicable generic
lot qualification test data including radiation performance can be made available on request. Consult
Advanced Analog for special requirements.
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AMF
Features
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12 Watts Output Power
Available in 3.3, 5, 12 and 15 Volt Outputs
16 - 40 VDC Input Range (28 VDC Nominal)
Low Input/Output Noise
Total Ionizing Dose > 25KRads (Si)
2
No SEE to LET > 60 MeV-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
Synchronizable From An External Source
Electrical Performance Similar to
AHF28XXS Series
1
07/25/03
AMF28XXS Series
Specifications
Absolute Maximum Ratings
Input Voltage Range
Soldering Temperature
Storage Case Temperature
-0.5V to +50VDC
300°C for 10 seconds
65°C to +135°C
Recommended Operating Ratings
Input Voltage Range
Output Power
Operating Case Temperature
+16V to +40VDC
Less than or equal to 12W
-55°C to +125°C
Static Characteristics -55°C ≤ TCASE ≤ +125°C, VIN=28 VDC ±5%, CL=0, unless otherwise specified.
Group A
Subgroups
Parameter
Test Conditions
Input Voltage
Output Voltage
Output Current
Output Power 1
AMF2803R3S
AMF2805S
AMF2807R5SS
AMF2812S
AMF2815S
1
1
1
1
1
AMF2803R3S
AMF2805S
AMF2807R5SS
AMF2812S
AMF2815S
2, 3
2, 3
2, 3
2, 3
2, 3
1
AMF2803R3S
AMF2805S
AMF2807R5SS
AMF2812S
AMF2815S
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
AMF2803R3S
All Others
1, 2, 3
1, 2, 3
Output Ripple Voltage
2
1, 2, 3
Output Voltage
Regulation
Line Line
AMF2803R3S
AMF2805S
AMF2807R5SSS
AMF2812S
AMF2815S
Load
All
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
Vin = 28 Volts, 0% load
Vin = 16, 28, 40 Volts
Min
Nom
Max
Unit
16
28
40
V
3.25
4.95
6.97
11.88
14.85
3.30
5.00
7.50
12.00
15.00
3.35
5.05
7.58
12.12
15.15
V
V
V
V
V
3.20
4.90
7.35
11.76
14.70
3.40
5.10
7.65
12.24
15.30
V
V
V
V
V
0
0
0
0
0
3000
2400
1600
1000
800
mA
mA
mA
mA
mA
10
12
W
W
25
60
mVPP
10
10
10
10
10
25
25
50
50
50
mV
mV
mV
mV
mV
10
50
mV
Vin = 16, 28, and 40 V dc
Vin = 16, 28, 40 Volts,
BW = 20 Hz to 2 MHz
Vin = 16, 28, 40 Volts
Iout = 0%, 50%, and 100%
max
For Notes to Specifications, refer to page 5
2
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AMF28XXS Series
Static Characteristics
(Continued) -55°C ≤ TCASE ≤ +125°C, VIN=28 VDC ±5%, CL=0, unless otherwise specified.
Group A
Subgroups
Parameter
Input Current
No Load
1, 2, 3
Inhibit
1, 2, 3
Input Ripple Current
Efficiency
1, 2, 3
AMF2803R3S
AMF2805S
AMF2807R5S
AMF2812S
AMF2815S
1, 3
1, 3
1, 3
1, 3
1, 3
AMF2803R3S
AMF2805S
AMF2807R5S
AMF2812S
AMF2815S
2
2
2
2
2
Isolation
Test Conditions
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
1
Input to output or any pin to
case (except pin 6) at 500Vdc
4
4
4
4
4
No effect on dc performance
Nom
Max
Unit
20
30
mA
8
12
mA
20
50
mAPP
72
76
77
78
78
%
%
%
%
%
70
72
73
75
75
%
%
%
%
%
100
MΩ
Capacitive Load 3, 4
AMF2803R3S
AMF2805S
AMF2807R5S
AMF2812S
AMF2815S
Short Circuit Power Dissipation
1, 2, 3
500
500
300
200
200
µF
µF
µF
µF
µF
6
watts
20
ms
600
KHz
Short Circuit Recovery 4
Switching Frequency
4, 5, 6
0% load to 100% Load
4, 5, 6
100% load
500
MIL-HDBK-217F
SF @ Tc = 35°C
750
MTBF
Weight
550
Khrs
36
g
For Notes to Specifications, refer to page 5
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3
AMF28XXS Series
Dynamic Characteristics
-55°C ≤ TCASE ≤ +125°C, VIN=28 VDC ±5%, CL=0, unless otherwise specified.
Group A
Parameter
Subgroups
Synchronization Input
Frequency Range
Pulse Amplitude, Hi 4
Pulse Amplitude, Lo 4
Pulse Rise time 4
Pulse Duty Cycle 4
Output Response To Step
Transient Load Changes 5
Test Conditions
4, 5, 6
Min
Max
Unit
20
700
10
0.8
100
80
KHz
V
V
ns
%
500
2.5
-0.5
Nom
All
4, 5, 6
Load step 50%ó100%
-300
+300
mV pk
AMF2803R3S
AMF2805S
AMF2807R5S
AMF2812S
AMF2815S
4, 5, 6
4, 5, 6
4, 5, 6
4, 5, 6
4, 5, 6
Load step 0% ó50%
-400
-500
-750
-750
-750
+400
+500
+750
+750
+750
mV pk
mV pk
mV pk
mV pk
mV pk
Recovery Time, Step Transient
Load Changes 5, 6
AMF2803R3S
AMF2805S
AMF2807R5S
AMF2812S
AMF2815S
4, 5, 6
4, 5, 6
4, 5, 6
4, 5, 6
4, 5, 6
Load step 50%ó100%
70
70
100
100
100
µS
µs
µs
µs
µs
All
4, 5, 6
Load step 0% ó 50%
2
mS
+500
+500
+1200
+1500
+1500
mV pk
mV pk
mV pk
mV pk
mV pk
Output Response Transient Step
Line Changes 4, 7
AMF2803R3S
AMF2805S
AMF2807R5SS
AMF2812S
AMF2815S
Recovery Time Transient Step Line
Changes 4, 7
Turn On Overshoot 8
AMF2803R3S
AMF2805S
AMF2807R5SS
AMF2812S
AMF2815S
Turn On Delay 8
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
4, 5, 6
Input step 16 ⇔ 40Vdc, 100%
load
800
µs
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
mV pk
mV pk
mV pk
mV pk
mV pk
4, 5, 6
0% load to 100% load
20
ms
For Notes to Specifications, refer to page 5
4
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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 20 Hz to 2 MHz.
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 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 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.
AMF28XXS Block Diagram
EMI
Filter
8
+Input
3
U nder-V oltage
D etector
1
E nable
4
P rim ary
H ousekeeping
S upply
+V out
R eturn
6
C ase
2
S ync
D rive
P ulse W idth
FB
M odulator
CS
E rror
Amp &
R ef
Input
R eturn
7
Application Information
Inhibit Function
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. The open circuit voltage of the enable input is 10.0 +1 VDC.
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). Advanced Analog 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
AMF28XXS Series
Standard Process Screening for AMF28XXS Series
Requirement
MIL-STD-883
Method
Engineering Model
(/EM)
CH+ Limits
(No-Suffix)
Temperature Range
-55°C to +125°C
-55°C to +125°C
Element Evaluation
—
MIL-PRF-38534
Ý
ü
Internal Visual
2017
Temperature Cycle
1010
Condition C
Constant Acceleration
2001
Condition A, (3000g)
PIND
2020
Condition A
Burn-in, Tcase = +125°C
1015
160 hrs
Interim Electrical
+ 25°C
48 hrs
160 hrs
-55°C, +25°C, +125°C
Read & Record Data
-55°C, +25°C, +125°C
Read & Record Data
—
2%
—
Yes
Burn-in, Tcase = +125°C
MIL-PRF-38534
& Specification
Final Electrical (Group A)
PDA (25C, interim to final)
Radiographic Inspection
2012
Fine & Gross
1014
External Visual
2009
Condition A, C
Ý
Yes
Ý Per IR internal standards
Radiation Specification
Parameter
Condition
Min
Typ
Max
Unit
KRads
(Si)
Total Ionizing Dose
MIL-STD-883, Method 1019.4
Operating bias applied during exposure
25
—
—
Heavy Ion
(Single event effects)
BNL Dual Van de Graf Generator
60
—
—
6
2
MeV •cm
/mg
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AMF28XXS Series
AMF28XXS Case Outline
1.130
Ø 0.140
0.17
5
3
4
6
7
0.03D x 0.25L
8 P ins
1.850 1.600
2.10
1.000
2
0.800
0.600
1
8
0.400
0.19
0.33
1.380
Tolerance unless otherwise specified:
x.xx ±0.010
x.xxx ±0.005
Pin Designation
Pin No.
Designation
1
Enable
2
Sync Input
3
Positive Output
4
Output Common
5
N/C
6
Case Ground
7
Input Return
8
Positive Input
Part Numbering
AMF 28 05 S / EM
Model
Input Voltage
28 = 28V
Output Voltage
03R3 = 3.3V, 05 = 5V,
12 = 12V, 15 = 15V
Screening
Blank = Flight Model (CH+)
/EM = Engineering Model
Outputs
S = Single
D = Dual
WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 322 3331
ADVANCED ANALOG: 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. 07/03
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