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AFL12003R3S の電気的特性と機能

AFL12003R3SのメーカーはInternational Rectifierです、この部品の機能は「HYBRID-HIGH RELIABILITY DC/DC CONVERTER」です。


製品の詳細 ( Datasheet PDF )

部品番号 AFL12003R3S
部品説明 HYBRID-HIGH RELIABILITY DC/DC CONVERTER
メーカ International Rectifier
ロゴ International Rectifier ロゴ 




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AFL12003R3S Datasheet, AFL12003R3S PDF,ピン配置, 機能
HYBRID-HIGH RELIABILITY
DC/DC CONVERTER
PD - 94448E
AFL12003R3S
120V Input, 3.3V 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 or +270V inputs with output
power ranging from 66W 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. Under voltage 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
3.3V Output
High Power Density - 46W/in3
n 66W Output Power
n Parallel Operation with Stress and Current
Sharing
n Low Profile (0.380") Seam Welded Package
n Ceramic Feed thru Copper Core Pins
n High Efficiency - to 74%
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 Drawing 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.
www.irf.com
1
12/12/06
Free Datasheet http://www.Datasheet4U.com

1 Page





AFL12003R3S pdf, ピン配列
AFL12003R3S
Elecrical Performance Characteristics (Continued)
Parameter
Group A
Subgroups
Test Conditions
ENABLE INPUTS (Inhibit Function)
Converter Off
Sink Current
Converter On
Sink Current
1, 2, 3
1, 2, 3
Logical Low, Pin 4 or Pin 12
Note 1
Logical High, Pin 4 and Pin 12 - Note 9
Note 1
SYNCHRONIZATION INPUT
Frequency Range
Pulse Amplitude, Hi
Pulse Amplitude, Lo
Pulse Rise Time
Pulse Duty Cycle
1, 2, 3
1, 2, 3
1, 2, 3
Note 1
Note 1
LOAD TRANSIENT RESPONSE
Amplitude
Recovery
Amplitude
Recovery
4, 5, 6
4, 5, 6
4, 5, 6
4, 5, 6
Note 2, 8
Load Step 50% 100%
Load Step 10% 50%
LINE TRANSIENT RESPONSE
Amplitude
Recovery
Note 1, 2, 3
VIN Step = 80 160 Volts
TURN-ON CHARACTERISTICS
Overshoot
Delay
4, 5, 6
4, 5, 6
VIN = 80, 120, 160 Volts. Note 4
Enable 1, 2 on. (Pins 4, 12 high or open)
LOAD FAULT RECOVERY
Same as Turn On Characteristics.
LINE REJECTION
MIL-STD-461, CS101, 30Hz to 50KHz
Note 1
Min
-0.5
2.0
500
2.0
-0.5
20
-450
-450
-500
50
50
Nom Max
0.8
100
50
100
700
10
0.8
100
80
450
200
450
400
500
500
250
75 120
60
Unit
V
µA
V
µA
KHz
V
V
ns
%
mV
µs
mV
µs
mV
µs
mV
ms
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.
www.irf.com
3
Free Datasheet http://www.Datasheet4U.com


3Pages


AFL12003R3S 電子部品, 半導体
AFL12003R3S
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 pro duct
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 convinient and are frequently 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:
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 an AFL27015S 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.
1Sil-Pad is a registered Trade Mark of Bergquist, Minneapolis, MN
6 www.irf.com
Free Datasheet http://www.Datasheet4U.com

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部品番号部品説明メーカ
AFL12003R3S

HYBRID-HIGH RELIABILITY DC/DC CONVERTER

International Rectifier
International Rectifier


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