IRF AFL2805DZ/HB Advanced analog high reliability hybrid dc/dc converter Datasheet

PD - 94461B
AFL270XXD SERIES
270V Input, Dual Output
ADVANCED ANALOG
HIGH RELIABILITY
HYBRID DC/DC CONVERTERS
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 +28 or +270 volt
inputs with output power ranging from 80 to 120 watts.
For applications requiring higher output power, individual converters can be operated in parallel. The internal current sharing circuits assure equal current distribution among the paralleled converters. This series incorporates Advanced Analog’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 550 KHz. Multiple
converters can be synchronized to a system clock in the
500 KHz to 700 KHz 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 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-PRF38534, these converters are available in four screening
grades to satisfy a wide range of requirements. The CH
grade is fully compliant to the requirements of MIL-H38534 for class H. The HB grade is processed and
screened to the class H requirement, but may not necessarily meet all of the other MIL-PRF-38534 requirements, e.g., element evaluation and Periodic Inspection
(P.I.) not required. 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 avail-
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AFL
Features
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
160 To 400 Volt Input Range
±5, ±12, and ±15 Volts Outputs Available
High Power Density - up to 70 W / in3
Up To 100 Watt Output Power
Parallel Operation with Power Sharing
Low Profile (0.380") Seam Welded Package
Ceramic Feedthru Copper Core Pins
High Efficiency - to 87%
Full Military Temperature Range
Continuous Short Circuit and Overload
Protection
Output Voltage Trim
Primary and Secondary Referenced
Inhibit Functions
Line Rejection > 60 dB - DC to 50KHz
External Synchronization Port
Fault Tolerant Design
Single Output Versions Available
Standard Military Drawings Available
able for use in less demanding applications. Variations in electrical, mechanical and screening can
be accommodated. Contact Advanced Analog for
special requirements.
1
09/11/02
AFL270XXD Series
Specifications
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Soldering Temperature
-0.5V to 500V
300°C for 10 seconds
Case Temperature
Operating
Storage
-55°C to +125°C
-65°C to +135°C
Static Characteristics -55°C < TCASE < +125°C, 160V< VIN < 400V unless otherwise specified.
Group A
Subgroups
Parameter
Test Conditions
INPUT VOLTAGE
Note 6
OUTPUT VOLTAGE
VIN = 270 Volts, 100% Load
Min
Nom
Max
Unit
160
270
400
V
AFL27005D
1
1
Positive Output
Negative Output
4.95
-5.05
5.00
-5.00
5.05
-4.95
V
V
AFL27012D
1
1
Positive Output
Negative Output
11.88
-12.12
12.00
-12.00
12.12
-11.88
V
V
AFL27015D
1
1
Positive Output
Negative Output
14.85
-15.15
15.00
-15.00
15.15
-14.85
V
V
AFL27005D
2, 3
2, 3
Positive Output
Negative Output
4.90
-5.10
5.10
-4.90
V
V
AFL27012D
2, 3
2, 3
Positive Output
Negative Output
11.76
-12.24
12.24
-11.76
V
V
AFL27015D
2, 3
2, 3
Positive Output
Negative Output
14.70
-15.30
15.30
-14.70
V
V
VIN = 160, 270, 400 Volts - Notes 6, 11
OUTPUT CURRENT
AFL27005D
Either Output
12.8
A
AFL27012D
Either Output
6.4
A
AFL27015D
Either Output
5.3
A
AFL27005D
80
W
AFL27012D
96
W
AFL27015D
100
W
OUTPUT POWER
Total of Both Outputs. Notes 6,11
MAXIMUM CAPACITIVE LOAD
Each Output Note 1
OUTPUT VOLTAGE
TEMPERATURE COEFFICIENT
VIN = 270 Volts, 100% Load - Notes 1, 6
OUTPUT VOLTAGE REGULATION
Line
Load
1, 2, 3
1, 2, 3
Cross
Note 10
No Load, 50% Load, 100% Load
VIN = 160, 270, 400 Volts.
µfd
5,000
-0.015
+0.015
%/°C
-0.5
-1.0
+0.5
+1.0
%
%
VIN = 160, 270, 400 Volts. Note 12
AFL27005D
1, 2, 3
Positive Output
Negative Output
-1.0
-8.0
+1.0
+8.0
%
%
AFL27012D
1, 2, 3
Positive Output
Negative Output
-1.0
-5.0
+1.0
+5.0
%
%
AFL27015D
1, 2, 3
Positive Output
Negative Output
-1.0
-5.0
+1.0
+5.0
%
%
For Notes to Specifications, refer to page 4
2
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AFL270XXD Series
Static Characteristics (Continued)
Group A
Subgroups
Parameter
OUTPUT RIPPLE VOLTAGE
Test Conditions
Min
Nom
VIN = 160, 270, 400 Volts, 100% Load,
BW = 10MHz
Max
Unit
AFL27005D
1, 2, 3
60
mVpp
AFL27012D
1, 2, 3
80
mVpp
AFL27015D
1, 2, 3
80
mVpp
No Load
1
2, 3
1, 2, 3
1, 2, 3
10.00
12.00
3.00
5.00
mA
mA
mA
mA
INPUT CURRENT
Inhibit 1
Inhibit 2
INPUT RIPPLE CURRENT
VIN = 270 Volts
IOUT = 0
Pin 4 Shorted to Pin 2
Pin 12 Shorted to Pin 8
VIN = 270 Volts, 100% Load
AFL27005D
1, 2, 3
60
mApp
AFL27012D
1, 2, 3
70
mApp
AFL27015D
1, 2, 3
80
mApp
125
115
140
%
%
%
30
W
CURRENT LIMIT POINT
Expressed as a Percentage
of Full Rated Load
LOAD FAULT POWER
DISSIPATION
1
2
3
VOUT = 90% VNOM , Current split
equally on positive and negative outputs.
Note 5
115
105
125
VIN = 270 Volts
1, 2, 3
Overload or Short Circuit
VIN = 270 Volts, 100% Load
EFFICIENCY
AFL27005D
AFL27012D
AFL27015D
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
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
78
82
83
Logical Low on Pin 4 or Pin 12
Note 1
Logical High on Pin 4 and Pin 12 - Note 9
Note 1
-0.5
2.0
1, 2, 3
500
1, 2, 3
1, 2, 3
1, 2, 3
500
2.0
-0.5
Note 1
Note 1
1
Input to Output or Any Pin to Case
(except Pin 3). Test @ 500VDC
DEVICE WEIGHT
Slight Variations with Case Style
MTBF
MIL-HDBK-217F, AIF @ TC = 70°C
550
20
100
0.8
100
50
100
V
µA
V
µA
600
KHz
700
10
0.8
100
80
KHz
V
V
nSec
%
MΩ
85
300
%
%
%
82
85
87
gms
KHrs
For Notes to Specifications, refer to page 4
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3
AFL270XXD Series
Dynamic Characteristics -55°C < TCASE < +125°C, VIN=270V unless otherwise specified.
Parameter
Group A
Subgroups
AFL2812D
Either Output
AFL2815D
Either Output
Min
Nom
Max
Unit
Note 2, 8
LOAD TRANSIENT RESPONSE
AFL2805D
Either Output
Test Conditions
Amplitude
Recovery
4, 5, 6
4, 5, 6
Load Step 50% ⇔ 100%
-450
450
200
mV
µSec
Amplitude
Recovery
4, 5, 6
4, 5, 6
Load Step 10% ⇔ 50%
10% ⇒ 50%
50% ⇒ 10%
-450
450
200
400
mV
µSec
µSec
Amplitude
Recovery
4, 5, 6
4, 5, 6
Load Step 50% ⇔ 100%
-750
750
200
mV
µSec
Amplitude
Recovery
4, 5, 6
4, 5, 6
Load Step 10% ⇔ 50%
10% ⇒ 50%
50% ⇒ 10%
-750
750
200
400
mV
µSec
µSec
Amplitude
Recovery
4, 5, 6
4, 5, 6
Load Step 50% ⇔ 100%
-750
750
200
mV
µSec
Amplitude
Recovery
4, 5, 6
4, 5, 6
Load Step 10% ⇔ 50%
10% ⇒ 50%
50% ⇒ 10%
-750
750
200
400
mV
µSec
µSec
-500
500
500
mV
µSec
250
120
mV
mSec
Note 1, 2, 3
LINE TRANSIENT RESPONSE
VIN Step = 160 ⇔ 400 Volts
Amplitude
Recovery
TURN-ON CHARACTERISTICS
Overshoot
Delay
VIN = 160, 270, 400 Volts. Note 4
4, 5, 6
4, 5, 6
Enable 1, 2 on. (Pins 4, 12 high or
open)
LOAD FAULT RECOVERY
Same as Turn On Characteristics.
LINE REJECTION
MIL-STD-461D, CS101, 30Hz to
50KHz
Note 1
50
75
60
70
dB
Notes to Specifications:
1.
2.
Parameters not 100% tested but are guaranteed to the limits specified in the table.
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.
10. Load current split equally between +Vout and -Vout.
11. Output load must be distributed so that a minimum of 20% of the total output power is being provided by one of
the outputs.
12. Cross regulation measured with load on tested output at 20% of maximum load while changing the load on
other output from 20% to 80%.
4
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AFL270XXD Series
AFL270XXD Circuit Description
Figure I. AFL Dual Output Block Diagram
DC Input
1
Enable 1 4
Input
Filter
Output
Filter
7 + Output
Current
Sense
Primary
Bias Supply
8 Output Return
Output
Filter
Sync Output
5
Sync Input
6
Control
Case
3
Input Return
2
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 pins 4 and 12 are 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. Two power MOSFETs used to
chop the DC input voltage into a high frequency square
wave, apply this chopped voltage to the power transformer.
As this switching is initiated, a voltage is impressed on a
second winding of the power transformer which is then
rectified and applied to the primary bias supply. When this
occurs, the input voltage is excluded from the bias voltage
generator and the primary bias voltage becomes internally
generated.
The switched voltage impressed on the secondary output
transformer windings is rectified and filtered to provide the
positive and negative converter output voltages. An error
amplifier on the secondary side compares the positive 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 control section of the converter varying the pulse width
of the square wave signal driving the MOSFETs, narrowing
the pulse width if the output voltage is too high and widening
it if it is too low. These pulse width variations provide the
necessary corrections to regulate the magnitude of output
voltage within its’ specified limits.
Because the primary portion of the circuit is coupled to the
secondary side with magnetic elements, full isolation from
input to output is maintained.
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Error
Amp
& Ref
9
Share
Amplifier
-Output
11 Share
12 Enable 2
10 Trim
Although incorporating several sophisticated and useful
ancilliary features, basic operation of the AFL270XXDseries
can be initiated by simply applying an input voltage to pins 1
and 2 and connecting the appropriate loads between pins 7,
8, and 9. Of course, operation of any converter with high
power density should not be attempted before secure attachment to an appropriate heat dissipator. (See Thermal
Considerations, page 7)
Inhibiting Converter Output
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
+5.6V
100K
Pin 4 or
Pin 12
1N4148
Disable
290K
2N3904
150K
Pin 2 or
Pin 8
5
AFL270XXD 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).
level of +2.0 volts. 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 indicted, 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 ±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 converter is not inhibited. This synch output has adequate
drive reserve to synchronize at least five additional converters. A typical synchronization connection option is illustrated in Figure III.
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 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
100 ns, maximum low level of +0.8 volts and a minimum high
Figure III. Preferred Connection for Parallel Operation
Power
Input
1
12
Vin
Enable 2
Rtn
Share
Case
Enable 1
AFL
Trim
- Output
Return
Sync Out
Sync In
Optional
Synchronization
Connection
+ Output
7
6
Share Bus
1
12
Enable 2
Vin
Rtn
Share
Case
Enable 1
AFL
Trim
to Negative Load
- Output
Return
Sync Out
Sync In
to Positive Load
+ Output
7
6
1
12
Vin
Enable 2
Rtn
Share
Case
Enable 1
AFL
Trim
- Output
Return
Sync Out
+ Output
Sync In
7
6
(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 current sharing among the members of a set whose load current exceeds the capacity of an individual AFL. An important fea-
6
ture 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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AFL270XXD 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 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 output and return 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 only a single converter, the
voltage appearing on the share pin may be used as a “totall
current monitor”. The share pin open circuit voltage is nominally +1.00v at no load and increases linearly with increasing total output current to +2.20v at full load. Note that the
current we refer to here is the total output current, that is,
the sum of the positive and negative outout currents.
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.
Since the 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
transferring 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 dissipater thereby compensating
for any minor surface variations. While other available types
of heat conductive materials and thermal compounds provide similar effectiveness, these alternatives are often less
convenient and can be somewhat messy to use.
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:
.
 ∆T −143

− 3.0
A HEAT SINK ≈ 
 80P 0.85 
where
∆T = Case temperature rise above ambient
 1

P = Device dissipation in Watts = POUT 
− 1
 Eff

As an example, assume that it is desired to operate an
AFL27015D while holding the case temperature at TC ≤
+85°C in an area where the ambient temperature is held to
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% @ 100 watts: thus, power
dissipation at full load is given by
 1

− 1 = 100 • ( 0.205) = 20.5W
P = 100 • 
 .83 
and the required heat sink area is
60


A HEAT SINK = 

 80 • 20.5 0.85 
−1.43
− 3.0 = 56.3 in 2
Thus, a total heat sink surface area (including fins, if any) of
56 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 7" (28 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 +25°C ambient air.
1Sil-Pad is a registered Trade Mark of Bergquist, Minneapolis, MN
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7
AFL270XXD Series
Input Filter
Table 1. Output Voltage Trim Values and Limits
The AFL270XXD series converters incorporate a single
stage LC input filter whose elements dominate the input
load impedance characteristic during the turn-on sequence.
The input circuit is as shown in Figure IV.
Figure IV. Input Filter Circuit
8.4µH
Pin 1
0.54µfd
Pin 2
Undervoltage Lockout
A minimum voltage is required at the input of the converter
to initiate operation. This voltage is set to 150 ± 5 volts. To
preclude the possibility of noise or other variations at the
input falsely initiating and halting converter operation, a hysteresis of approximately 10 volts is incorporated in this circuit. Thus if the input voltage droops to 140 ± 5 volts, the
converter will shut down and remain inoperative until the
input voltage returns to ≈150 volts.
Output Voltage Adjust
By use of the trim pin (10), the magnitude of output voltages
can be adjusted over a limited range in either a positive or
negative direction. Connecting a resistor between the trim
pin and either the output return or the positive output will
raise or lower the magnitude of output voltages. The span
of output voltage adjustment is restricted to the limits shown
in Table I.
AFL27005D
AFL27012D
AFL27015D
Vout
Radj
Vout
Radj
Vout
Radj
5.5
5.4
0
12.5K
12.5
12.4
0
47.5K
15.5
15.4
0
62.5K
5.3
33.3K
12.3
127K
15.3
167K
5.2
75K
12.2
285K
15.2
375K
5.1
5.0
200K
∞
12.1
12.0
760K
∞
15.1
15.0
1.0M
∞
4.9
190K
11.7
975K
14.6
1.2M
4.8
4.7
65K
23K
11.3
10.8
288K
72.9K
14.0
13.5
325K
117K
4.6
2.5K
10.6
29.9K
13.0
12.5K
4.583
0
10.417
0
12.917
0
Note that the nominal magnitude of output voltage resides in
the middle of the table and the corresponding resistor value
is set to ∞. To set the magnitude greater than nominal, the
adjust resistor is connected to output return. To set the
magnitude less than nominal, the adjust resistor is connected to the positive output. (Refer to Figure V.)
For output voltage settings that are within the limits, but
between those listed in Table I, it is suggested that the
resistor values be determined empirically by selection or by
use of a variable resistor. The value thus determined can
then be replaced with a good quality fixed resistor for permanent installation.
When use of this adjust feature is elected, the user should
be aware that the temperature performance of the converter output voltage will be affected by the temperature
performance of the resistor selected as the adjustment
element and therefore, is advised to employ resistors with a
tight temperature coefficient of resistance.
Figure V. Connection for VOUT Adjustment
12
Enable 2
Share
R ADJ
AFL270xxD
Trim
+
- Vout
To
Loads
Return
+ Vout
7
Connect Radj to + to increase, - to decrease
8
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AFL270XXD Series
AFL270XXD Case Outlines
Case X
Case W
Pin Variation of Case Y
3.000
ø 0.128
2.760
0.050
0.050
1
12
0.250
0.250
1.260 1.500
0.200 Typ
Non-cum
6
7
1.000
Ref
1.000
Pin
ø 0.040
Pin
ø 0.040
0.220
2.500
0.220
2.800
2.975 max
0.525
0.238 max
0.42
0.380
Max
0.380
Max
Case Y
Case Z
Pin Variation of Case Y
0.300
1.150
ø 0.140
0.25 typ
0.050
0.050
1
12
0.250
0.250
1.500 1.750 2.00
1.000
Ref
0.200 Typ
Non-cum
6
7
1.000
Ref
Pin
ø 0.040
Pin
ø 0.040
1.750
0.375
0.220
0.220
0.36
2.500
2.800
2.975 max
0.525
0.238 max
0.380
Max
0.380
Max
Tolerances, unless otherwise specified:
.XX
.XXX
=
=
±0.010
±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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9
AFL270XXD Series
Available Screening Levels and Process Variations for AFL270XXD Series.
MIL-STD-883
Method
Requirement
Temperature Range
No
Suffix
ES
Suffix
HB
Suffix
CH
Suffix
-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
Temperature Cycle
1010
¬
ü
ü
ü
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
MIL-PRF-38534
& Specification
25°C
25°C
-55, +25, +125°C
-55, +25, +125°C
Seal, Fine & Gross
1014
Cond C
Cond A, C
Cond A, C
Cond A, C
External Visual
2009
¬
ü
ü
ü
Final Electrical (Group A)
* per Commercial Standards
Part Numbering
AFL270XXD Pin Designation
Pin No.
1
Designation
Positive Input
2
Input Return
3
Case
4
Enable 1
5
Sync Output
6
Sync Input
7
Positive Output
8
Output Return
9
Negative Output
10
Output Voltage Trim
11
Share
12
Enable 2
AFL 270 05 D X / CH
Model
Input Voltage
270 = 270V
28 = 28V
Output Voltage
05 = 5V, 12 = 12V,
15 = 15V
Screening
Case Style
– , ES
HB, CH
W, X, Y, Z
Outputs
S = Single
D = Dual
AFL270XXD to Standard Military Drawing Equivalence Table
AFL27005D
5962-9550101
AFL27012D
5962-9951801
AFL27015D
5962-9553201
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
10
www.irf.com
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