AFL12008S (International Rectifier)
HYBRID-HIGH RELIABILITY DC/DC CONVERTER

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PD-94447D
HYBRID-HIGH RELIABILITY
DC/DC CONVERTER
AFL120XXS SERIES
120V Input, Single Output
Description
The AFL Series of DC/DC converters feature high power
density with no derating over the full military temperature
range. This series is offered as part of a complete family
of converters providing single and dual output voltages
and operating from nominal +28V, +50V, +120V or +270 V
inputs with output power ranging from 80W to 120W.
For applications requiring higher output power, multiple
converters can be operated in parallel. The internal
current sharing circuits assure equal current distribution
among the paralleled converters. This series incorporates
International Rectifier’s proprietary magnetic pulse
feedback technology providing optimum dynamic line
and load regulation response. This feedback system
samples the output voltage at the pulse width modulator
fixed clock frequency, nominally 550KHz. Multiple
converters can be synchronized to a system clock in
the 500KHz to 700KHz range or to the synchronization
output of one converter. Undervoltage lockout, primary
and secondary referenced inhibit, soft-start and load
fault protection are provided on all models.
These converters are hermetically packaged in two
enclosure variations, utilizing copper core pins to
minimize resistive DC losses. Three lead styles are
available, each fabricated with International Rectifier’s
rugged ceramic lead-to-package seal assuring long
term hermeticity in the most harsh environments.
AFL
Features
n 80V To 160V Input Range
n
n
5, 7.5, 8, 9, 12, 15 and 28V Outputs Available
High Power Density - up to 84W/in3
n Up To 120W Output Power
n Parallel Operation with Stress and Current
Sharing
n Low Profile (0.380") Seam Welded Package
n Ceramic Feedthru Copper Core Pins
n High Efficiency - to 87%
n Full Military Temperature Range
n Continuous Short Circuit and Overload
Protection
n Remote Sensing Terminals
n Primary and Secondary Referenced
Inhibit Functions
n Line Rejection > 50dB - DC to 50KHz
n External Synchronization Port
n Fault Tolerant Design
n Dual Output Versions Available
n Standard Microcircuit Drawings Available
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.
Variations in electrical, mechanical and screening can
be accommodated. Contact IR Santa Clara for special
requirements.
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1
04/30/07


AFL12008S (International Rectifier)
HYBRID-HIGH RELIABILITY DC/DC CONVERTER

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AFL120XXS Series
Specifications
Absolute Maximum Ratings
Input voltage
Soldering temperature
Operating case temperature
Storage case temperature
-0.5V to +180VDC
300°C for 10 seconds
-55°C to +125°C
-65°C to +135°C
Static Characteristics -55°C < TCASE < +125°C, 80V< VIN < 160V unless otherwise specified.
Parameter
Group A
Subgroups
Test Conditions
Min Nom Max
INPUT VOLTAGE
Note 6
OUTPUT VOLTAGE
VIN = 120 Volts, 100% Load
AFL12005S
1
AFL12007R5S
1
AFL12008S
AFL12009S
AFL12012S
AFL12015S
AFL12028S
AFL12005S
AFL12007R5S
AFL12008S
AFL12009S
AFL12012S
AFL12015S
AFL12028S
1
1
1
1
1
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
80 120 160
4.95
7.42
7.92
8.91
11.88
14.85
27.72
4.90
7.35
7.84
8.82
11.76
14.70
27.44
5.00
7.50
8.00
9.00
12.00
15.00
28.00
5.05
7.58
8.08
9.09
12.12
15.15
28.28
5.10
7.65
8.16
9.18
12.24
15.30
28.56
Unit
V
V
OUTPUT CURRENT
AFL12005S
AFL12007R5S
AFL12008S
AFL12009S
AFL12012S
AFL12015S
AFL12028S
OUTPUT POWER
AFL12005S
AFL12007R5S
AFL12008S
AFL12009S
AFL12012S
AFL12015S
AFL12028S
MAXIMUM CAPACITIVE LOAD
OUTPUT VOLTAGE
TEMPERATURE COEFFICIENT
OUTPUT VOLTAGE REGULATION
AFL12028S
Line
All Others
Line
Load
OUTPUT RIPPLE VOLTAGE
AFL12005S
AFL12007R5S
AFL12008S
AFL12009S
AFL12012S
AFL12015S
AFL12028S
VIN = 80, 120, 160 Volts - Note 6
Note 6
Note 1
VIN = 120 Volts, 100% Load - Notes 1, 6
16.0
10.67
10.0
10.0
9.0
8.0
4.0
80
80
80
90
108
120
112
10,000
-0.015
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
1, 2, 3
No Load, 50% Load, 100% Load
VIN = 80, 120, 160 Volts
VIN = 80, 120, 160 Volts, 100% Load,
BW = 10MHz
-70
-20
-1.0
For Notes to Specifications, refer to page 4
2
A
W
+0.015
µF
%/°C
+70
+20
+1.0
30
40
40
40
45
50
100
mV
mV
%
mVpp
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HYBRID-HIGH RELIABILITY DC/DC CONVERTER

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AFL120XXS Series
Static Characteristics (Continued)
Parameter
Group A
Subgroups
Test Conditions
INPUT CURRENT
No Load
Inhibit 1
Inhibit 2
INPUT RIPPLE CURRENT
AFL12005S
AFL12007R5S
AFL12008S
AFL12009S
AFL12012S
AFL12015S
AFL12028S
CURRENT LIMIT POINT
As a percentage of full rated load
LOAD FAULT POWER
DISSIPATION
Overload or Short Circuit
EFFICIENCY
AFL12005S
AFL12007R5S
AFL12008S
AFL12009S
AFL12012S
AFL12015S
AFL12028S
ENABLE INPUTS (Inhibit Function)
Converter Off
Sink Current
Converter On
Sink Current
SWITCHING FREQUENCY
SYNCHRONIZATION INPUT
Frequency Range
Pulse Amplitude, Hi
Pulse Amplitude, Lo
Pulse Rise Time
Pulse Duty Cycle
ISOLATION
DEVICE WEIGHT
MTBF
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
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
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1
VIN = 120 Volts
IOUT = 0
Pin 4 Shorted to Pin 2
Pin 12 Shorted to Pin 8
VIN = 120 Volts, 100% Load, BW =
10MHz
VOUT = 90% VNOM , VIN = 120 Volts
Note 5
VIN = 120 Volts
VIN = 120 Volts, 100% Load
Logical Low on Pin 4 or Pin 12
Note 1
Logical High on Pin 4 and Pin 12 - Note 9
Note 1
Note 1
Note 1
Input to Output or Any Pin to Case
(except Pin 3). Test @ 500VDC
Slight Variations with Case Style
MIL-HDBK-217F, AIF @ TC = 70°C
Min
115
105
125
78
79
79
80
82
83
82
-0.5
2.0
500
500
2.0
-0.5
20
100
300
Nom
82
83
73
84
85
87
85
550
85
Max
20
25
5.0
50
60
60
60
60
60
60
60
125
115
140
32
0.8
100
50
100
600
700
10
0.8
100
80
Unit
mA
mApp
%
W
%
V
µA
V
µA
KHz
KHz
V
V
ns
%
M
g
KHrs
For Notes to Specifications, refer to page 4
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AFL12008S (International Rectifier)
HYBRID-HIGH RELIABILITY DC/DC CONVERTER

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AFL120XXS Series
Dynamic Characteristics -55°C < TCASE < +125°C, VIN=120V unless otherwise specified.
Parameter
Group A
Subgroups
Test Conditions
Min Nom Max
Unit
LOAD TRANSIENT RESPONSE
AFL12005S
Amplitude
Recovery
Amplitude
Recovery
AFL12007R5S Amplitude
Recovery
Amplitude
Recovery
AFL12009S
Amplitude
Recovery
Amplitude
Recovery
AFL12012S
Amplitude
Recovery
Amplitude
Recovery
AFL12015S
Amplitude
Recovery
Amplitude
Recovery
AFL12028S
Amplitude
Recovery
Amplitude
Recovery
LINE TRANSIENT RESPONSE
Amplitude
Recovery
TURN-ON CHARACTERISTICS
Overshoot
Delay
LOAD FAULT RECOVERY
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
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
4, 5, 6
4, 5, 6
4, 5, 6
4, 5, 6
4, 5, 6
4, 5, 6
4, 5, 6
4, 5, 6
Note 2, 8
Load Step 50% 100%
Load Step 10% 50%
Load Step 50% 100%
Load Step 10% 50%
Load Step 50% 100%
Load Step 10% 50%
Load Step 50% 100%
Load Step 10% 50%
Load Step 50% 100%
Load Step 10% 50%
Load Step 50% 100%
Load Step 10% 50%
Note 1, 2, 3
VIN Step = 80 160 Volts
VIN = 30, 50, 80 Volts. Note 4
Enable 1, 2 on. (Pins 4, 12 high or
open)
Same as Turn On Characteristics.
-450
-450
-500
-500
-600
-600
-750
-750
-750
-750
-1200
-1200
450
200
450
300
500
200
500
300
600
200
600
300
750
200
750
300
750
200
750
300
1200
200
1200
300
mV
µs
mV
µs
mV
µs
mV
µs
mV
µs
mV
µs
mV
µs
mV
µs
mV
µs
mV
µs
mV
µs
mV
µs
-500
500 mV
500 µs
250 mV
50 75 120 ms
LINE REJECTION
MIL-STD-461D, CS101, 30Hz to
50KHz
Note 1
60 70
dB
Notes to Specifications:
1. Parameters not 100% tested but are guaranteed to the limits specified in the table.
2. Recovery time is measured from the initiation of the transient to where VOUT has returned to within ±1.0%
of VOUT at 50% load.
3. Line transient transition time 100µs.
4. Turn-on delay is measured with an input voltage rise time of between 100V and 500V per millisecond.
5. Current limit point is that condition of excess load causing output voltage to drop to 90% of nominal.
6. Parameter verified as part of another test.
7. All electrical tests are performed with the remote sense leads connected to the output leads at the load.
8. Load transient transition time 10µs.
9. Enable inputs internally pulled high. Nominal open circuit voltage 4.0VDC.
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HYBRID-HIGH RELIABILITY DC/DC CONVERTER

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AFL120XXS Series
+ Input 1
Enable 1 4
Sync Output 5
Sync Input 6
Case 3
Input Return 2
Input
Filter
Primary
Bias Supply
Control
FB
Block Diagram
Figure I. AFL Single Output
Error
Amp
& Ref
Output
Filter
Current
Sense
Share
Amplifier
Sense
Amplifier
7 +Output
10 +Sense
11 Share
12 Enable 2
9 Return Sense
8 Output Return
Circuit Operation and Application Information
The AFL series of converters employ a forward switched
mode converter topology. (refer to Figure I.) Operation of
the device is initiated when a DC voltage whose magnitude
is within the specified input limits is applied between pins 1
and 2. If pin 4 is enabled (at a logical 1 or open) the primary
bias supply will begin generating a regulated housekeeping
voltage bringing the circuitry on the primary side of the
converter to life. A power MOSFET is used to chop the DC
input voltage into a high frequency square wave, applying
this chopped voltage to the power transformer at the nominal
converter switching frequency. Maintaining a DC voltage
within the specified operating range at the input assures
continuous generation of the primary bias voltage.
The switched voltage impressed on the secondary output
transformer winding is rectified and filtered to generate the
converter DC output voltage. An error amplifier on the
secondary side compares the output voltage to a precision
reference and generates an error signal proportional to the
difference. This error signal is magnetically coupled through
the feedback transformer into the controller section of the
converter varying the pulse width of the square wave signal
driving the MOSFET, narrowing the width if the output voltage
is too high and widening it if it is too low, thereby regulating
the output voltage.
Remote Sensing
Connection of the + and - sense leads at a remotely located
load permits compensation for excessive resistance
between the converter output and the load when their
physical separation could cause undesirable voltage drop.
This connection allows regulation to the placard voltage at
the point of application. When the remote sensing feature is
not used, the sense should be connected to their respective
output terminals at the converter. Figure III. illustrates a
typical remotely sensed application.
Inhibiting Converter Output (Enable)
As an alternative to application and removal of the DC voltage
to the input, the user can control the converter output by
providing TTL compatible, positive logic signals to either of
two enable pins (pin 4 or 12). The distinction between these
two signal ports is that enable 1 (pin 4) is referenced to the
input return (pin 2) while enable 2 (pin 12) is referenced to
the output return (pin 8). Thus, the user has access to an
inhibit function on either side of the isolation barrier. Each
port is internally pulled “high” so that when not used, an
open connection on both enable pins permits normal
converter operation. When their use is desired, a logical
“low” on either port will shut the converter down.
Figure II. Enable Input Equivalent Circuit
Pin 4 or
Pin 12
1N4148
100K
290K
Pin 2 or
Pin 8
150K
+5.6V
Disable
2N3904
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HYBRID-HIGH RELIABILITY DC/DC CONVERTER

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AFL120XXS Series
Internally, these ports differ slightly in their function. In use,
a low on Enable 1 completely shuts down all circuits in the
converter while a low on Enable 2 shuts down the secondary
side while altering the controller duty cycle to near zero.
Externally, the use of either port is transparent to the user
save for minor differences in idle current. (See specification
table).
Synchronization of Multiple Converters
When operating multiple converters, system requirements
often dictate operation of the converters at a common
frequency. To accommodate this requirement, the AFL
series converters provide both a synchronization input and
output.
The sync input port permits synchronization of an AFL
converter to any compatible external frequency source
operating between 500KHz and 700KHz. This input signal
should be referenced to the input return and have a 10% to
90% duty cycle. Compatibility requires transition times less
than100ns, maximum low level of +0.8V and a minimum high
level of +2.0V. The sync output of another converter which
has been designated as the master oscillator provides a
convenient frequency source for this mode of operation.
When external synchronization is not required, the sync in
pin should be left unconnected thereby permitting the
converter to operate at its’ own internally set frequency.
The sync output signal is a continuous pulse train set at
550 ±50KHz, with a duty cycle of 15 ±5.0%. This signal is
referenced to the input return and has been tailored to be
compatible with the AFL sync input port. Transition times
are less than 100ns and the low level output impedance is
less than 50. This signal is active when the DC input
voltage is within the specified operating range and the
converter is not inhibited. This output has adequate drive
reserve to synchronize at least five additional converters.
A typical synchronization connection option is illustrated in
Figure III.
Figure III. Preferred Connection for Parallel Operation
Power
Input
Optional
Synchronization
Connection
1
Vin
Rtn
Case
Enable 1
Sync Out
Sync In
6
AFL
Enable 2
Share
+ Sense
- Sense
Return
+ Vout
12
7
1
Vin
Rtn
Case
Enable 1
Sync Out
Sync In
6
AFL
Enable 2
Share
+ Sense
- Sense
Return
+ Vout
12
7
Share Bus
to Load
1
Vin
Rtn
Case
Enable 1
Sync Out
Sync In
6
AFL
Enable 2
Share
+ Sense
- Sense
Return
+ Vout
12
7
(Other Converters)
Parallel Operation-Current and Stress Sharing
Figure III. illustrates the preferred connection scheme for
operation of a set of AFL converters with outputs operating
in parallel. Use of this connection permits equal sharing of
a load current exceeding the capacity of an individual AFL
among the members of the set. An important feature of the
AFL series operating in the parallel mode is that in addition
to sharing the current, the stress induced by temperature
will also be shared. Thus if one member of a paralleled set
is operating at a higher case temperature, the current it
provides to the load will be reduced as compensation for
the temperature induced stress on that device.
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HYBRID-HIGH RELIABILITY DC/DC CONVERTER

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AFL120XXS Series
When operating in the shared mode, it is important that
symmetry of connection be maintained as an assurance of
optimum load sharing performance. Thus, converter outputs
should be connected to the load with equal lengths of wire of
the same gauge and sense leads from each converter should
be connected to a common physical point, preferably at the
load along with the converter output and return leads. All
converters in a paralleled set must have their share pins
connected together. This arrangement is diagrammatically
illustrated in Figure III. showing the outputs and sense pins
connected at a star point which is located close as possible
to the load.
As a consequence of the topology utilized in the current
sharing circuit, the share pin may be used for other functions.
In applications requiring a single converter, the voltage
appearing on the share pin may be used as a “current
monitor”. The share pin open circuit voltage is nominally
+1.00V at no load and increases linearly with increasing
output current to +2.20V at full load. The share pin voltage
is referenced to the output return pin.
Thermal Considerations
Because of the incorporation of many innovative
technological concepts, the AFL series of converters is
capable of providing very high output power from a package
of very small volume. These magnitudes of power density
can only be obtained by combining high circuit efficiency
with effective methods of heat removal from the die junctions.
This requirement has been effectively addressed inside the
device; but when operating at maximum loads, a significant
amount of heat will be generated and this heat must be
conducted away from the case. To maintain the case
temperature at or below the specified maximum of 125°C,
this heat must be transferred by conduction to an
appropriate heat dissipater held in intimate contact with the
converter base-plate.
Because effectiveness of this heat transfer is dependent
on the intimacy of the baseplate/heatsink interface, it is
strongly recommended that a high thermal conductivity heat
transferance medium is inserted between the baseplate
and heatsink. The material most frequently utilized at the
factory during all testing and burn-in processes is sold under
the trade name of Sil-Pad® 4001 . This particular product
is an insulator but electrically conductive versions are also
available. Use of these materials assures maximum surface
contact with the heat dissipator thereby compensating for
minor variations of either surface. While other available
types of heat conductive materials and compounds may
provide similar performance, these alternatives are often
less convenient and are frequently messy to use.
1Sil-Pad is a registered Trade Mark of Bergquist, Minneapolis, MN
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A conservative aid to estimating the total heat sink surface
area (AHEAT SINK) required to set the maximum case
temperature rise (T) above ambient temperature is given
by the following expression:
A
HEAT SINK
T
80P 0.85
1.43
3.0
where
T = Case temperature rise above ambient
P=
Device
dissipation
in
Watts
=
POUT ⎧⎨
1
Eff
1⎫⎬
As an example, it is desired to maintain the case temperature
of this device at £ +85°C in an area where the ambient
temperature is held at a constant +25°C; then
T = 85 - 25 = 60°C
From the Specification Table, the worst case full load
efficiency for this device is 83%; therefore the power
dissipation at full load is given by
P
=
120
⎧⎨⎩.813
1⎫⎬
=
120
(0.205)
=
24.6W
and the required heat sink area is
A
HEAT
SINK
=
80
60
24.6 0.85
1.43
3.0
=
71
in2
Thus, a total heat sink surface area (including fins, if any) of
71 in2 in this example, would limit case rise to 60°C above
ambient. A flat aluminum plate, 0.25" thick and of
approximate dimension 4" by 9" (36 in2 per side) would
suffice for this application in a still air environment. Note
that to meet the criteria in this example, both sides of the
plate require unrestricted exposure to the ambient air.
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HYBRID-HIGH RELIABILITY DC/DC CONVERTER

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AFL120XXS Series
Input Filter
The AFL120XXS series converters incorporate a LC input
filter whose elements dominate the input load impedance
characteristic at turn-on. The input circuit is as shown in
Figure IV.
Figure IV. Input Filter Circuit
Pin 1
16.8uH
Pin 2
0.78uF
Finding a resistor value for a particular output voltage, is
simply a matter of substituting the desired output voltage
and the nominal device voltage into the equation and solving
for the corresponding resistor value.
Figure V. Connection for VOUT Adjustment
AFL120xxS
Enable 2
Share
+ Sense
- Sense
Return
+ Vout
RADJ
To Load
Note: Radj must be set 500
Undervoltage Lockout
A minimum voltage is required at the input of the converter
to initiate operation. This voltage is set to 74V ± 4.0V. To
preclude the possibility of noise or other variations at the
input falsely initiating and halting converter operation, a
hysteresis of approximately 7.0V is incorporated in this
circuit. Thus if the input voltage droops to 67V ± 4.0V, the
converter will shut down and remain inoperative until the
input voltage returns to 74V.
Output Voltage Adjust
In addition to permitting close voltage regulation of remotely
located loads, it is possible to utilize the converter sense
pins to incrementally increase the output voltage over a
limited range. The adjustments made possible by this method
are intended as a means to “trim” the output to a voltage
setting for some particular application, but are not intended
to create an adjustable output converter. These output
voltage setting variations are obtained by connecting an
appropriate resistor value between the +sense and -sense
pins while connecting the -sense pin to the output return pin
as shown in Figure V. below. The range of adjustment and
corresponding range of resistance values can be determined
by use of the following equation.
Attempts to adjust the output voltage to a value greater than
120% of nominal should be avoided because of the potential
of exceeding internal component stress ratings and
subsequent operation to failure. Under no circumstance
should the external setting resistor be made less than 500.
By remaining within this specified range of values, completely
safe operation fully within normal component derating limits
is assured.
Examination of the equation relating output voltage and
resistor value reveals a special benefit of the circuit topology
utilized for remote sensing of output voltage in the
AFL120XXS series of converters. It is apparent that as the
resistance increases, the output voltage approaches the
nominal set value of the device. In fact the calculated limiting
value of output voltage as the adjusting resistor becomes
very large is 25mV above nominal device voltage.
The consequence is that if the +sense connection is
unintentionally broken, an AFL120XXS has a fail-safe output
voltage of Vout + 25mV, where the 25mV is independent of
the nominal output voltage. It can be further demonstrated
that in the event of both the + and - sense connections
being broken, the output will be limited to Vout + 440mV.
This 440mV is also essentially constant independent of the
nominal output voltage.
Radj
=
100
⎧⎨⎩VOUT
-
VNOM
VNOM
-.025
⎫⎬⎭
Where VNOM = device nominal output voltage, and
VOUT = desired output voltage
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AFL120XXS Series
General Application Information
The AFL120XXS series of converters are capable of
providing large transient currents to user loads on demand.
Because the nominal input voltage range in this series is
relatively low, the resulting input current demands will be
correspondingly large. It is important therefore, that the line
impedance be kept very low to prevent steady state and
transient input currents from degrading the supply voltage
between the voltage source and the converter input. In
applications requiring high static currents and large
transients, it is recommended that the input leads be made
of adequate size to minimize resistive losses, and that a
good quality capacitor of approximately 100µF be connected
directly across the input terminals to assure an adequately
low impedance at the input terminals. Table I relates nominal
resistance values and selected wire sizes.
Table 1. Nominal Resistance of Cu Wire
Wire Size, AWG
Resistance per ft
24 Ga
22 Ga
20 Ga
18 Ga
16 Ga
14 Ga
12 Ga
25.7 m
16.2 m
10.1 m
6.4 m
4.0 m
2.5 m
1.6 m
Incorporation of a 100µF capacitor at the input terminals is
recommended as compensation for the dynamic effects
of the parasitic resistance of the input cable reacting with
the complex impedance of the converter input, and to
provide an energy reservoir for transient input current
requirements.
Figure VI. Problems of Parasitic Resistance in input Leads
(See text)
esource
Rp
Rp
System Ground
Iin
Vin
100
IRtn µfd eRtn Rtn
Case
Enable 1
Sync Out
Sync In
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AFL12008S (International Rectifier)
HYBRID-HIGH RELIABILITY DC/DC CONVERTER

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AFL120XXS Series
Mechanical Outlines
Case X
3.000
2.760
2.500
2.975 max
0.238 max
ø 0.128
1.260 1.500
0.250
1.000
Ref
0.220
0.050
0.200 Typ
Non-cum
Pin
ø 0.040
0.380
Max
Case W
Pin Variation of Case Y
0.250
1.000
0.050
2.800
0.220
0.525
Pin
ø 0.040
0.380
Max
0.42
0.25 typ
1.150
Case Y
0.300
ø 0.140
0.250
1.500 1.750 2.00
1.000
Ref
1.750
2.500
2.975 max
0.238 max
0.375
0.380
Max
0.220
0.050
0.200 Typ
Non-cum
Pin
ø 0.040
Case Z
Pin Variation of Case Y
0.250
1.000
Ref
0.050
0.220
2.800
0.525
Pin
ø 0.040
0.36
0.380
Max
Tolerances, unless otherwise specified: .XX = ±0.010
.XXX = ±0.005
BERYLLIA WARNING: These converters are hermetically sealed; however they contain BeO substrates and should not be ground or subjected to any other
operations including exposure to acids, which may produce Beryllium dust or fumes containing Beryllium
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AFL12008S (International Rectifier)
HYBRID-HIGH RELIABILITY DC/DC CONVERTER

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Pin Designation
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
Designation
+ Input
Input Return
Case Ground
Enable 1
Sync Output
Sync Input
+ Output
Output Return
Return Sense
+ Sense
Share
Enable 2
AFL120XXS Series
Standard Microcircuit Drawing Equivalence Table
Standard Microcircuit
Drawing Number
5962-99608
5962-02549
5962-02550
5962-02551
5962-02552
5962-02553
IR Standard
Part Number
AFL12005S
AFL12008S
AFL12009S
AFL12012S
AFL12015S
AFL12028S
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AFL12008S (International Rectifier)
HYBRID-HIGH RELIABILITY DC/DC CONVERTER

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AFL120XXS Series
Device Screening
Requirement MIL-STD-883 Method No Suffix
ES d
HB
CH
Temperature Range
e-20°C to +85°C -55°C to +125°C -55°C to +125°C -55°C to +125°C
Element Evaluation
MIL-PRF-38534
N/A
N/A
N/A Class H
Non-Destructive
Bond Pull
Internal Visual
2023
2017
N/A N/A
c Yes
N/A N/A
Yes Yes
Temperature Cycle
1010
N/A
Cond B
Cond C
Cond C
Constant Acceleration
2001, Y1 Axis
N/A
500 Gs
3000 Gs
3000 Gs
PIND
2020
N/A N/A
N/A N/A
Burn-In
Final Electrical
1015
MIL-PRF-38534
N/A
25°C
48 hrs@hi temp 160 hrs@125°C 160 hrs@125°C
d25°C
-55°C, +25°C, -55°C, +25°C,
( Group A )
& Specification
+125°C
+125°C
PDA
MIL-PRF-38534
N/A
N/A
N/A 10%
Seal, Fine and Gross
1014
Cond A
Cond A, C
Cond A, C
Cond A, C
Radiographic
External Visual
2012
2009
N/A N/A
c Yes
N/A N/A
Yes Yes
Notes:
 Best commercial practice
‚ Sample tests at low and high temperatures
ƒ -55°C to +105°C for AHE, ATO, ATW
Part Numbering
AFL 120 05 S X /CH
Model
Input Voltage
Screening Level
(Please refer to Screening Table)
No suffix, ES, HB, CH
28 = 28V
50 = 50V
120 = 120V
270 = 270V
Case Style
W, X, Y, Z
Output
Output Voltage
S = Single
05 = 5V, 06 = 6V
07 = 7V, 07R5 = 7.5V
08 = 8V, 09 = 9V
12 = 12V,15 = 15V
28 = 28V
WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 322 3331
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. 04/2007
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AFL12008S.pdf
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