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ATR28XXD の電気的特性と機能

ATR28XXDのメーカーはIRF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 ATR28XXD
部品説明 HYBRID - HIGH RELIABILITY DC-DC CONVERTER
メーカ IRF
ロゴ IRF ロゴ 




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ATR28XXD Datasheet, ATR28XXD PDF,ピン配置, 機能
PD-94550B
HYBRID - HIGH RELIABILITY
DC-DC CONVERTER
ATR28XXD SERIES
28V Input, Dual Output
Description
The ATR28XXD Series of DC-DC converters feature
high power density and an extended temperature range
for use in military and industrial applications. Designed
to MIL-STD-704D input requirements, these devices
have nominal 28VDC inputs with ±12V and ±15V dual
outputs to satisfy a wide range of requirements. The
circuit design incorporates a pulse width modulated
single forward topology operating in the feed-forward
mode at a nominal switching frequency of 550KHz.
Input to output isolation is achieved through the use of
transformers in the forward and feedback circuits.
The advanced feedback design provides fast loop
response for superior line and load transient characteristics
and offers greater reliability and radiation tolerance
than devices incorporating optical feedback circuits.
Three standard temperature grades are offered with
screening options. Refer to Part Number section. They
can be provided in a standard plug-in package for PC
mounting or in a flanged package for more severe
environments.
Manufactured in a facility fully qualified to MIL-PRF-
38534, these converters are fabricated utilizing DLA
and Land Maritime qualified processes. For available
screening options, refer to device screening table in
the data sheet. Variations in electrical, mechanical
and screening can be accommodated.
ATR
Features
n 16V to 40VDC Input Range (28VDC Nominal)
n ±12V and ±15V Outputs Available
n Indefinite Short Circuit and Overload Protection
n 35W/in3 Power Density
n 30W Output Power
n Fast Loop Response for Superior Transient
Characteristics
n Operating Temperature Range from
-55°C to +125°C
n Popular Industry Standard Pin-Out
n Resistance Seam Welded Case for Superior
Long Term Hermeticity
n Ceramic Feed-thru Pins
n External Synchronization
n High Efficiency
n Shutdown from External Signal
n Military Screening
n Standard Microcircuit Drawings Available
Extensive computer simulation using complex modeling
enables rapid design modification to be provided.
Contact IR San Jose with specific requirements.
www.irf.com
1
07/07/11
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ATR28XXD pdf, ピン配列
ATR28XXD Series
Specifications
TCASE = -55°C to +125°C, VIN = +28V ± 5% unless otherwise specified
Absolute M axim um Ratings
Input voltage
-0.5V to +50VDC
Power Output
Internally lim ited, 36W typical
Soldering temperature
300°C for 10 seconds
Temperature Range1
Recomm ended Operating temperature
Maxim um Operating tem perature
Storage case temperature
-55°C to +125°C
-55°C to +135°C
-65°C to +135°C
PARAMETER
Condition
-55°C TC +125°C, VIN = 28
VDC ±5%, CL=0, unless
otherwise specified
ATR2812D/ES
Min Typ Max
ATR2815D/ES
Min Typ Max
Units
STATIC CHARACTERISTICS
OUTPUT
Voltage
Current 5
R ip p le
Accuracy
Power1
RE GU LA TI ON
Line
Load
CROSS REGULATION6
INPUT
Voltage Range
C urre nt
Ripple Current
E FFIC IE NCY
ISOLATION
CAPACITIVE LOAD
Load Fault Power Dissipation
Switching Frequency
SYNC Frequency Range7
DYNAMIC CHARACTERISTICS
Step Load Changes
Output
Transient
VIN = 16 to 40 VDC
IOUT = 0 to Full Load
Full Load, 20KHz to 2MHz
TCASE = 25°C, Full Load
VIN = 16 to 40 VDC
IOUT = 0 to Full Load
VIN = 16, 28, and 40 VDC
No Load, pin 2 = open
Inhibited, pin 2 tied to pin 10
Full Load
Full Load TC = +25°C
Input to output @ 500 VDC
No effect on performance
TC = +25°C (total for both
outputs)
Short Circuit
Overload, TC = +25°C
IOUT = Full Load
50% Load to 100% Load
No Load to 50% Load
±11.76
0.0
±11.88
30
±12
40
±12.00
16 28
25
80 82
100
±12.24
±1.25
85
±12.12
75
120
±5
40
75
18
50
100
±14.70
0.0
±14.85
30
16
79
100
±15
40
±15.00
±15
±1.0
85
±15.15
75
150
±5
28 40
75
18
25 50
82
100
VDC
ADC
mV p-p
VDC
W
mV
mV
%
VDC
mADC
mADC
mA p-p
%
M
µF
9.0 9.0 W
14 14 W
500 600 500 600 KHz
500 700 500 700 KHz
±100
±250
±100
±250
mVpk
mVpk
Recovery 2
Step Line Changes
Output
Transient
Recovery 2
TURN -O N
Overshoot
Delay3
Load Fault Recovery
50% Load to 100% Load
No Load to 50% Load
50% Load to No Load
Input step 16 to 40 VDC
Input step 40 to 16 VDC
Input step 16 to 40 VDC
Input step 40 to 16 VDC
VIN = 16 to 40 VDC
IOUT = O to Full Load
VIN = 16 to 40 VDC
25
500
3.0
±180
-600
5.0
5.0
0.0
14
14
600
25
25
25 µs
500 µs
3.0 ms
±180
-600
5.0
5.0
mVpk
mVpk
ms
ms
0.0 600 mVpk
14 25 ms
14 25 ms
Notes to Specifications
1. Above +125°C case temperature, derate output power linearly to 0 at +135°C case.
2. Recovery time is measured from the initiation of the input transient to where VOUT has returned to within ±1% of VOUT at 50% load.
3. Turn-on delay time measurement is for either an application of power at the input or a signal at the inhibit pin.
4. Load current split equally between +VOUT and –VOUT.
5. Up to 90% of Full Power is available from either output provided. The total power output does not exceed 30W.
6. 3W load on output under test, 3W to 27W on other output.
7. Sync. Input signal: VIL = -0.5V Min, 0.8V Max and VIN = 2.5V Min, 11.5V Max for 10% to 90% duty cycle.
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ATR28XXD 電子部品, 半導体
ATR28XXD Series
1
+Input
EMI
Filter
Block Diagram
2
Inhibit Input
8
Case
9
Sync
Primary
Housekeeping
Supply
Drive
Pulse Width
Modulator FB
CS
3 +Vout
Regulator
4
Output
Return
5 -Vout
Error
Amp &
Ref
10
Input Return
Application Information
Inhibit Function
Connecting the inhibit input (Pin 2) to input common (Pin 10)
will cause the converter to shut down. It is recommended
that the inhibit pin be driven by an open collector device
capable of sinking at least 400µA of current. The open
circuit voltage of the inhibit input is 11.5 ±1.0VDC.
EMI Filter
An EMI filter (AFC461), available as an option, will reduce
the input ripple current to levels below the limits imposed by
MIL-STD-461B CEO3.
Device Synchronization
Whenever multiple DC/DC converters are utilized in a single
system, significant low frequency noise may be generated
due to slight difference in the switching frequencies of the
converters (beat frequency noise). Because of the low
frequency nature of this noise (typically less than 10KHz),
it is difficult to filter out and may interfere with proper operation
of sensitive systems (communications, radar or telemetry).
The International Rectifier ATR28XX converters provide a
synchronizing input permitting synchronization of multiple
converters to the frequency of the users system clock,
thereby minimizing this type of noise.
6
Thermal Management
Assuming that there is no forced air flow, the package
temperature rise above ambient (T) may be calculated
using the following expression:
∆Τ = 80 A –0.7 Pd 0.85 (°C)
(1)
where A = the effective surface area in square inhes
(in-cluding heat sink if used), Pd = power dissipation in watts.
The total surface area of the ATR standard package is
7.34 square inches. If a worse case full load efficiency of
78% is assumed, then the case temperature rise can be
calculated as follows:
Pd
=
POUT
⎢⎣
1
Eff
1⎥⎦⎤
=
30⎢⎣⎡
1
78
1⎥⎦⎤
=
8.5W
and ∆Τ = 80 (7.34) –0.7 (8.5) 0.85 = 122°C
Hence, if TAMBIENT = +25°C, the DC/DC converter case
temperature will be approximately 147°C if no heat sink
or air flow is provided.
To calculate the heat sink area required to maintain a
specific case temperature rise, equation (1) may be
manipulated as follows:
AHEATSINK
=
T
⎢⎣
80Pd
0.85
1.43
⎥⎦
APKG
As an example, if it is desired to limit the case
temperature rise to a maximum of 50°C above ambient,
the required effective heat sink area is:
AHEATSINK
50 1.43
=
80(8.5)
0.85
7.34 = 19.1in2
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部品番号部品説明メーカ
ATR28XXD

HYBRID - HIGH RELIABILITY DC-DC CONVERTER

IRF
IRF


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