09/10/02
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ADVANCED ANALOG
HIGH RELIABILITY
HYBRID DC/DC CONVERTERS
AFL120XXS SERIES
The AFL Series of DC/DC converters feature high power
density with no derating over the full military tempera-
ture range. This series is offered as par t of a complete
family of converters providing single and dual output
voltages and operating from nominal +28, +50, +120 or
+270 volt inputs with output power ranging from 80 to
120 watts. For applications requiring higher output
power, multiple converters can be operated in parallel.
The internal current sharing circuits assure equal cur-
rent distribution among the paralleled converters. This
series incorporates Advanced Analog’s proprietary mag-
netic pulse feedback technology providing optimum
dynamic line and load regulation response. This feed-
back system samples the output voltage at the pulse
width modulator fixed clock frequency, nominally 550
KHz. Multiple converters can be synchronized to a sys-
tem clock in the 500 KHz to 700 KHz range or to the
synchronization output of one conver ter. Under voltage
lockout, primary and secondary referenced inhibit, soft-
start and load fault protection are provided on all mod-
els.
These converters are hermetically packaged in two en-
closure variations, utilizing copper core pins to mini-
mize resistive DC losses. Three lead styles are avail-
able, each fabricated with Advanced Analog’s rugged
ceramic lead-to-package seal assuring long term
hermeticity in the most harsh environments.
Manufactured in a facility fully qualified to MIL-PRF-
38534, these converters are available in four screening
grades to satisfy a wide r ange of requirements. The CH
grade is fully compliant to the requirements of MIL-PRF-
38534 for class H. The HB grade is fully processed and
screened to the class H requirement, but does not have
material element evaluated to the class H requirement.
Both grades are tested to meet the complete group “A”
test specification over the full military temperature range
without output power deration. Two grades with more
limited screening are also available for use in less de-
Description
manding applications. V ariations in electrical, me-
chanical and screening can be accommodated.
Contact Advanced Analog for special require-
ments.
n80 To 160 Volt Input Range
nHigh Power Density - up to 84 W / in3
nUp To 120 Watt Output Powe r
nParallel Operation with Stress and Current
Sharing
nLow Profile (0.380") Seam Welded Package
nCeramic Feedthru Copper Core Pins
nHigh Efficiency - to 87%
nFull Military Temperature Range
nContinuous Short Circuit and Overload
Protection
nRemote Sensing Terminals
nPrimary and Secondary Referenced
Inhibit Functions
nLine Rejection > 50 dB - DC to 50KHz
nExternal Synchronization Port
nFault Tolerant Design
nDual Output Versions Available
nStandard Military Drawings Available
Features
AFL
120V Input, Single Output
PD - 94447B
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AFL120XXS Series
Specifications
ABSOLUTE MAXIMUM RATINGS
Input Voltage -0.5V to 180V
Soldering Tem perature 300°C for 10 seconds
Case Tem perature Operating -55°C to +125°C
Storage -65°C to +135°C
Static Characteristics -55°C < TCASE < +125°C, 80V< VIN < 160V unless otherwise specified.
For Notes to Specifications, refer to page 4
Parameter Group A
Subgroups
Test Conditions
Min
Nom
Max
Unit
INPUT VOLTAGE Note 6 80 120 160 V
OUTPUT VOLTAGE
AFL12005S
AFL12008S
AFL12009S
AFL12012S
AFL12015S
AFL12028S
AFL12005S
AFL12008S
AFL12009S
AFL12012S
AFL12015S
AFL12028S
1
1
1
1
1
1
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
VIN = 120 Volts, 100% Load
4.95
7.92
8.91
11.88
14.85
27.72
4.90
7.84
8.82
11.76
14.70
27.44
5.00
8.00
9.00
12.00
15.00
28.00
5.05
8.08
9.09
12.12
15.15
28.28
5.10
8.16
9.18
12.24
15.30
28.56
V
V
V
V
V
V
V
V
V
V
V
V
OUTPUT CURRENT
AFL12005S
AFL12008S
AFL12009S
AFL12012S
AFL12015S
AFL12028S
VIN = 80, 120, 160 Volts - Note 6
16.0
10.0
10.0
9.0
8.0
4.0
A
A
A
A
A
A
OUTPUT POWER
AFL12005S
AFL12008S
AFL12009S
AFL12012S
AFL12015S
AFL12028S
Note 6
80
80
90
108
120
112
W
W
W
W
W
W
MAXIMUM CAPACITIVE LOAD Note 1 10,000
µfd
OUTPUT VOLTAGE
TEMPERATURE COEFFICIENT VIN = 120 Volts , 100% Load - Note 1, 6 -0.015 +0.015 %/°C
OUTPUT VOLTAGE REGULATION
AFL12028S Line
All Others Line
Load
1, 2, 3
1, 2, 3
1, 2, 3
No Load, 50% Load, 100% Load
VIN = 80, 120, 160 Volts
-70.0
-20.0
-1.0
+70.0
+20.0
+1.0
mV
mV
%
OUTPUT RIPPLE VOLTAGE
AFL12005S
AFL12008S
AFL12009S
AFL12012S
AFL12015S
AFL12028S
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
VIN = 80, 120, 160 Volts, 100% Load,
BW = 10MHz
30
40
40
45
50
100
mVpp
mVpp
mVpp
mVpp
mVpp
mVpp
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AFL120XXS Series
Static Characteristics (Continued)
For Notes to Specifications, refer to page 4
Parameter Group A
Subgroups
Test C onditions
Min
Nom
Max
Unit
INPUT CURRENT
No Load
Inhibit 1
Inhibit 2
1
2, 3
1, 2, 3
1, 2, 3
VIN = 120 Volts
IOUT = 0
Pin 4 S horted to Pin 2
Pin 12 Shorted to Pin 8
30
40
3.0
5.0
mA
mA
mA
mA
INPUT RIPPL E CURRENT
AFL12005S
AFL12008S
AFL12009S
AFL12012S
AFL12015S
AFL12028S
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
VIN = 120 Volts, 100% Load, BW =
10MHz
60
60
60
60
60
60
mApp
mApp
mApp
mApp
mApp
mApp
CURRENT LI MI T POI NT
As a percentage of f ull rated load
1
2
3
VOUT = 90% VNOM , VIN = 120 Volts
Note 5
115
105
125
125
115
140
%
%
%
LOAD FAULT POWER
DISSIPATION
Over load or Short Circ uit
1, 2, 3 VIN = 120 Volts
32
W
EFFICIENCY
AFL12005S
AFL12008S
AFL12009S
AFL12012S
AFL12015S
AFL12028S
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
VIN = 120 Volts , 100% Load
78
79
80
82
83
82
82
83
84
85
87
85
%
%
%
%
%
%
ENABLE INPUTS ( Inhibit Function)
Converter Off
Sink Current
Converter On
Sink Current
1, 2, 3
1, 2, 3
Logic al Low on P in 4 or Pin 12
Note 1
Logic al High on P in 4 and P in 12 - No te 9
Note 1
-0.5
2.0
0.8
100
50
100
V
µA
V
µA
SWITCHING FREQU ENCY 1, 2, 3 500 550 600 KHz
SYNCHRONIZATION INPUT
Frequenc y Rang e
Pulse Amp litude, Hi
Pulse Amp litude, Lo
Pulse Rise Time
Pulse Duty Cycle
1, 2, 3
1, 2, 3
1, 2, 3
Note 1
Note 1
500
2.0
-0.5
20
700
10
0.8
100
80
KHz
V
V
nSec
%
ISOLATION 1 Inp ut to Output or Any Pin to Case
(except Pin 3). Test @ 500VDC 100 MΩ
DEVICE WEIGHT S light Var iations with Case Style 85 gms
MTBF MIL-HDBK-21 7F, AI F @ TC = 70°C 300 KHrs
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AFL120XXS Series
Dynamic Characteristics -55°C < TCASE < +125°C, V IN=120V unless otherwise specified.
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% of VOUT at 50% load.
3. Line transient transition time ≥ 100 µSec.
4. Turn-on delay is measured with an input voltage rise time of between 100 and 500 volts 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 ≥ 10 µSec.
9. Enable inputs internally pulled high. Nominal open circuit voltage ≈ 4.0VDC.
Parameter Group A
Subgroups
Test Conditions
Min
Nom
Max
Unit
LOAD TRANSIE NT RES PO NSE
AFL12005S Amplitude
Recovery
Amplitude
Recovery
AFL12008S Amplitude
Recovery
Amplitude
Recovery
AFL12009S Amplitude
Recovery
Amplitude
Recovery
AFL12012S Amplitude
Recovery
Amplitude
Recovery
AFL12015S Amplitude
Recovery
Amplitude
Recovery
AFL12028S Amplitude
Recovery
Amplitude
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
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%
-450
-450
-500
-500
-600
-600
-750
-750
-750
-750
-1200
-1200
450
200
450
400
500
200
500
400
600
200
600
400
750
200
750
400
750
200
750
400
1200
200
1200
400
mV
µSec
mV
µSec
mV
µSec
mV
µSec
mV
µSec
mV
µSec
mV
µSec
mV
µSec
mV
µSec
mV
µSec
mV
µSec
mV
µSec
LINE TRANSI ENT RES PO NSE
Amplitude
Recovery
Note 1, 2, 3
VIN S tep = 80 ⇔ 160 Volts
-500
500
500
mV
µSec
TURN-ON CHARACTERISTI CS
Overshoot
Delay
4, 5, 6
4, 5, 6
VIN = 30, 50, 80 Volts. Note 4
Enable 1, 2 on. (P ins 4, 12 high or
open)
50
75
250
120
mV
mSec
LOAD FAULT RECO VE RY Same as Turn O n Characteristics.
LINE REJECTION MI L-STD-461D, CS101, 30Hz to
50KHz
Note 1
50 60 dB
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AFL120XXS Series
AFL120XXS Circuit Description
Figure I. AFL Single Output Block Diagram
Figure II. Enable Input Equivalent Circuit
Pin 4 or
P
in 1
2
1N4148
1
00
K
290K
150K
2N3904
+5.6V
Disable
Pin 2 or
P
in
8
Circuit Operation and Application Information
Remote Sensing
Inhibiting Converter Output
1
DC Input
Enable 1
4
Sync Outp
ut
5
6
Sync Inp
ut
Case
3
2Input Retu
rn
Input
Filter
Primary
Bias Su
pp
l
y
Control
F
B
Output
Filter
Current
Sense
Error
Amp
& Ref
Share
Am
p
lifier
Sense
Am
p
lifier
7
+
Output
10
+
Sense
11
S
hare
12
E
nable 2
9
-
Sense
8
O
utput Return
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 nomi-
nal converter switching frequency. Maintaining a DC volt-
age within the specified operating range at the input as-
sures 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 sec-
ondary 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 volt-
age is too high and widening it if it is too low , thereb y regulat-
ing the output voltage.
Connection of the + and - sense leads at a remotely located
load permits compensation for excessive resistance be-
tween the converter output and the load when their physical
separation could cause undesirable voltage drop. This con-
nection 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.
As an alternative to application and removal of the DC volt-
age 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 refer-
enced 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 nor-
mal converter operation. When their use is desired, a logi-
cal “low” on either port will shut the converter down.
6www.irf.com
AFL120XXS Series
Figure III. Preferred Connection for Parallel Operation
Optional
Synchronization
Connection
Power
Input
(Other Converters)
Share Bus
1
6
AFL
7
12
- Sense
Enable 2
+ Vout
Return
+ Sense
Share
Vin
Rtn
Case
Enable 1
S
y
nc Out
S
y
nc In
1
6
AFL
7
12
- Sense
Enable 2
+ Vout
Return
+ Sense
Share
Vin
Rtn
Case
Enable 1
S
y
nc Out
S
y
nc In
1
6
AFL
7
12
- Sense
Enable 2
+ Vout
Return
+ Sense
Share
Vin
Rtn
Case
Enable 1
S
y
nc Out
S
y
nc In
to Load
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.
Synchronization of Multiple Converters
Parallel Operation-Current and Stress Sharing
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 second-
ary 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).
When operating multiple converters, system requirements
often dictate operation of the converters at a common fre-
quency. To accommodate this requirement, the AFL series
converters provide both a synchronization input and out-
put.
The sync input port permits synchronization of an AFL co-
nverter to any compatible external frequency source oper-
ating between 500 and 700 KHz. This input signal should
be referenced to the input return and have a 10% to 90%
duty cycle. Compatibility requires transition times less th an
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
100 ns, maximum low level of +0.8 volts and a minimum
highlevel of +2.0 volts. The sync output of another con-
verter 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 permit-
ting the converter to operate at its’ own internally set fre-
quency.
The sync output signal is a continuous pulse train set at
550 ±50 KHz, with a duty cycle of 15 ±5%. 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 100 ns and the low level output impedance is
less than 50 ohms. This signal is active when the DC input
voltage is within the specified operating range and the con-
verter is not inhibited. This output has adequate drive re-
serve to synchronize at least five additional converters. A
typical synchronization connection option is illustrated in
Figure III.
www.irf.com 7
AFL120XXS Series
A conservative aid to estimating the total heat sink surface
area (AHEAT SINK) required to set the maximum case temp-
erature rise (∆T) above ambient temperature is given by
the following expression:
A HEAT SINK ≈
−
−
∆
T
P
80 30
085
143
.
..
where
∆
T
PP
Eff
OUT
=
==−
Case temperature rise above ambient
Device dissipation in Watts 11
∆T = 85 - 25 = 60°C
()
P
=• −
=• =
120 1
83 1 120 0205 246
...W
and the required heat sink area is
A = 60
80 24.6 inHEAT SINK 0.85
•
−=
−143 2
30 71
..
From the Specification Table, the worst case full load effi-
ciency for this device is 83%; therefore the power dissipa-
tion at full load is given by
Because of the incorporation of many innovative techno-
logical 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 effec-
tive methods of heat removal from the die junctions. This
requirement has been effectively addressed inside the de-
vice; 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 tem-
perature 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 st-
rongly recommended that a high thermal conductivity heat
transferance medium is inserted between the baseplate a-
nd heatsink. The mater ial most frequently utilized at the fa-
ctory during all testing and burn-in processes is sold under
the trade name of Sil-Pad 4001. This particular pro duct
is an insulator but electrically conductive versions are also
available. Use of these materials assures maximum surfa-
ce 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.
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 out-
puts should be connected to the load with equal lengths of
wire of the same gauge and sense leads from each con-
verter 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 out-
puts 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 func-
tions. In applications requiring a single converter, the volt-
age 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 v oltage is
referenced to the output return pin.
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 approxi-
mate 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.
1Sil-Pad is a registered Trade Mark of Bergquist, Minneapolis, MN
As an example, it is desired to maintain the case tempera-
ture of an AFL27015S at £ +85°C in an area where the
ambient temperature is held at a constant +25°C; then
Thermal Considerations
8www.irf.com
AFL120XXS Series
R = 100 - -.025
adj NOM
OUT NOM
•
V
VV
Where
V
NOM = device nominal output voltage, and
V
OUT = desired output voltage
Figure V. Connection for VOUT Adjustment
Input Filter
Undervoltage Lockout
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
Pin 2
16.8uH
0.78uF
A minimum voltage is required at the input of the converter
to initiate operation. This voltage is set to 74 ± 4 volts. To
preclude the possibility of noise or other variations at the
input falsely initiating and halting converter operation, a hys-
teresis of approximately 7 volts is incorporated in this cir-
cuit. Thus if the input voltage droops to 67 ± 4 volts, the
converter will shut down and remain inoperative until the
input voltage returns to ≈ 74 volts.
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 volt-
age setting variations are obtained by connecting an appro-
priate 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 deter-
mined by use of the following equation.
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 solv-
ing for the corresponding resistor value.
Enable 2
Share
+ Sense
- Sense
Return
+ V
out
To Load
R
ADJ
AFL120xxS
Note: Radj must be set ≥ 500Ω
Attempts to adjust the output voltage to a value greater than
120% of nominal should be avoided because of the poten-
tial of exceeding internal component stress ratings and sub-
sequent operation to failure. Under no circumstance should
the external setting resistor be made less than 500Ω. 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 re-
sistor 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 limit-
ing value of output voltage as the adjusting resistor be-
comes very large is ≈ 25mV above nominal device voltage.
The consequence is that if the +sense connection is unin-
tentionally 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 V out + 440mV. This
440 mV is also essentially constant independent of the nomi-
nal output voltage.
www.irf.com 9
AFL120XXS Series
General Application Information Table 1. Nominal Resistance of Cu Wire
The AFL120XXS series of converters are capable of pro-
viding 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 tran-
sients, it is recommended that the input leads be made of
adequate size to minimize resistive losses, and that a good
quality capacitor of approximately100mfd be connected
directly across the input terminals to assure an adequately
low impedance at the input terminals. Table I relates nomi-
nal resistance values and selected wire sizes.
Wire Size, AWG Resistance per ft
24 Ga 25.7 mΩ
22 Ga 16.2 mΩ
20 Ga 10.1 mΩ
18 Ga 6.4 mΩ
16 Ga 4.0 mΩ
14 Ga 2.5 mΩ
12 Ga 1.6 mΩ
Incorporation of a 100 µfd capacitor at the input terminals
is recommended as compensation for the dynamic ef-
fects 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)
Vin
Rtn
Case
Enable 1
Sync Out
Sync In
R
p
R
p
I
Rtn
I
in
e
source
System Ground
e
Rtn
100
µfd
10 www.irf.com
AFL120XXS Series
AFL120XXS Case Outlines
Case X
Case W
Pin Variation of Case Y
1.260 1.500
2.500
2.760
3.000
ø 0.128
0.250
1.000
Ref 0.200 T
y
p
Non-cum
0.050
0.220
Pin
ø 0.040
0.238 max
0.380
Max
2.975 max
16
712
0.050
0.220
0.250
1.000
Pin
ø 0.040
0.525
0.380
Max
2.800
0.42
Case Y Case Z
Pin Variation of Case Y
1.500 1.750
2.500
0.25 t
y
p
1.150
0.050
0.220
16
712
1.750 0.375
2.00
0.250
1.000
Ref 0.200 T
y
p
Non-cum
Pin
ø 0.040
0.300
ø 0.140
0.238 max
0.380
Max
2.975 max
0.050
0.220
0.250
1.000
Ref
Pin
ø 0.040
0.525
0.380
Max
2.800
0.36
BERYLLIA WARNING: These conv erters are hermetically sealed; ho wever the y 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
Tolerances, unless otherwi se specifi ed: .XX = ±0.010
.XXX = ±0.005
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AFL120XXS Series
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. 09/02
Available Screening Levels and Process V ariations for AFL120XXS Series.
Requirement MIL-STD-883
Method No
Suffix ES
Suffix HB
Suffix CH
Suffix
Temperature Range -20°C to +85°C -55°C to +125°C -55°C to +125°C -55°C to +125°C
Element Evaluation MIL-H-38534
Internal Visual 2017 ¬ ü ü ü
Temperature Cycle 1010 Cond B Cond C Cond C
Constant Acceleration 2001, 500g Cond A Cond A
Burn-in 1015 48hrs @ 85°C 48hrs @ 125°C 160hrs @ 125°C 160hrs @ 125°C
Final Electrical (Group A) MIL-PRF-38534 25°C 25°C -55, +25, +125°C -55, +25, +125°C
Seal, Fine & Gross 1014 Cond A Cond A, C Cond A, C Cond A, C
External Visual 2009 ¬ ü ü ü
* per Commercial Standards
Pin No. Designation
1 Positive Input
2 Input Return
3 Case
4 Enable 1
5 Sync Output
6 Sync Input
7 Positive Output
8 Output Return
9 Return Sense
10 Positive Sense
11 Share
12 Enable 2
AFL120XXS Pin Designation Part Numbering
AFL120 05 S X / CH
Model
Input Vol t age
28= 28 V, 50= 50 V
120=120 V, 270= 270 V
Out put Vol t age
3R3= 3.3 V, 05= 5 V
08= 8 V, 09= 9 V
12= 12 V, 15= 15 V
24= 24 V, 28= 28 V
Outputs
S = Single
D = Dual
Case Style
W, X, Y, Z
Screening
–
, ES
HB, CH
AFL12005S 5962-9960801
AFL120XXS to Standard Military Dra wing Equiv alence Table
