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부품번호 ATW28xxD
기능 ADVANCED ANALOG HYBRID-HIGH RELIABILITY DC/DC CONVERTERS
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ATW28xxD 데이터시트, 핀배열, 회로
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PD - 94557
ADVANCED ANALOG
HYBRID-HIGH RELIABILITY
DC/DC CONVERTERS
ATW28XXD SERIES
28V Input, Dual Output
Description
The ATW28XXD 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-704 input requirements, these devices op-
erate with a nominal 28 VDC inputs with ±12V and ±15V
dual outputs to satisfy a wide range of requirements.
The circuit design incorporates a pulse width modu-
lated push-pull topology operating in the feed-forward
mode at a nominal switching frequency of 270KHz. Input
to output isolation is achieved through the use of trans-
formers in the forward and feedback circuits.
The advanced feedback design provides fast loop re-
sponse for superior line and load transient character-
istics and offers greater reliability and radiation toler-
ance than devices incorporating optical elements in
the feedback circuits.
Three standard temperature grades are offered. Refer
to Part Number section for more severe environments.
Manufactured in a facility fully qualified to MIL-PRF-
38534, these converters are available in four screen-
ing grades to satisfy a wide range of requirements. The
CH grade is fully compliant to the requirements of MIL-
PRF-38534 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 re-
quirements, e.g., element evaluation and Periodic In-
spection (PI) 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 a more limited screening
are also available for use in less demanding applica-
tions. Variations in electrical, mechanical and screen-
ing can be accommodated. Contact Advanced Analog
for special requirements.
ATW
Features
n 18 to 40 VDC Input Range (28 VDC Nominal)
n ±12V and ±15V Outputs Available
n Indefinite Short Circuit and Overload
Protection
n 22.8 W/in3 Power Density
n 30 W Output Power
n Fast Loop Response for Superior Transient
Characteristics
n Operating Temperature Range from -55°C to
+125°C Available
n Popular Industry Standard Pin-Out
n Resistance Seam Welded Case for Superior
Long Term Hermeticity
n Efficiencies up to 85%
n Shutdown from External Signal
n Full Military Screening
n 200,000 hour MTBF at 85°C
n MIL-PRF-38534 Compliant Versions
Available
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ATW28xxD pdf, 반도체, 판매, 대치품
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ATW28XXD Series
Specifications
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Soldering Temperature
Case Temperature
-0.5V to 50V
300°C for 10 seconds
Operating -55°C to +125°C
Storage -65°C to +135°C
Table II. Electrical Performance Characteristics
Test
Symbol
Conditions
-55°C Tc +125°C
Vin = 28 Vdc ±5%, CL = 0
Unless otherwise specified
Group A
Subgroups
Output voltage
Output current 11, 13
Output ripple voltage 8
Output Power 4, 11
Line regulation 9, 10
Load regulation 9, 10
Input current
Input ripple current
Efficiency
Isolation
Capacitive load 6, 12
Power dissipation
load fault
Switching frequency
VOUT
IOUT
VRIP
POUT
VRLINE
VRLOAD
IIN
IRIP
EFF
ISO
C
L
PD
FS
VIN = 18, 28, and 40 Vdc
IOUT = 0
VIN = 18, 28, and 40 V dc
VIN = 18, 28, and 40 V dc,
B.W. = DC to MHz
VIN = 18, 28, 40 Vdc
VIN = 18, 28, and 40 V dc,
Iout = 0, 1000, and 2000mA
VIN = 18, 28, and 40 V dc,
IOUT = 0, 1000, and 2000mA
IOUT = 0, inhibit (pin 8)
IOUT = 0, inhibit (pin 8) = open
IOUT = 2000mA
IOUT = 2500mA TC = 25°C
Input to output or any pin
to case (except pin 8) at
500V dc Tc = 25°C
No effect on dc performance,
Tc = 25°C
Overload, TC = +25°C 3
Short
circuit,
T
C
=
+25°C
IOUT = 2000mA
Output response to step
transient
load changes 7, 9, 10
Recovery time step
transient load changes1, 7
VOTLOAD
TTLOAD
50% load to/from 100% load
No load to 100% load
100% load to no load
50% load to/from 100% load
No load to 50% load
50% load to no load
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
1
4
1
1
1,2,3
1,2,3
1,2,3
4,5,6
4,5,6
4,5,6
4,5,6
4,5,6
4,5,6
ATW2815D
Device
Types
Limits
Unit
Min Max
All ±14.85 ±15.15 VDC
All ±14.70 ±15.30 VDC
All
0.200
2000
mADC
All 85 mVp-p
All 30
W
All 35 mV
All 75 mV
All 150 mV
All 12 mADC
All 30 mADC
All 60 mAp-p
All 80
%
All 100
M
All 500 µF
All 9 W
All 9 W
01 237 263 KHz
02 230 245 KHz
03 250 265 KHz
All -300 +300 mV pk
All -800 -800 mV pk
All +800 +800 mV pk
All 25 µs
All 500 µs
All 7 ms
For Notes to Specifications, refer to page 5
4
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ATW28xxD 전자부품, 판매, 대치품
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ATW28XXD Case Outlines
1.000
0.040 D X
0.26 L Pins
0.05
4 X 0.400
=1.600
1.95 2.360
ATW28XXD Series
2.700
M ax
0.500
M ax
1.350
M ax
Pin Designation
Pin No.
1
2
3
4
5
6
7
8
9
10
Designation
Positive Input
N/C Standard or
Sync. ( Optional )
Positive Output
Output Return
Negative Output
N/C
Case Ground
EInnhaibbilte
N/C
Input Return
Part Numbering
ATW 28 15 D / CH - MSTR
Model
Input Voltage
28 = 28V Nom inal
Output Voltage
Sync Option
M STR = M aster
SLV = Slave
O m it for Standard
S cre e n in g
, ES, HB, CH
Single - 05, 12, 15VDC
Dual - 12 = ±12V, 15 = ±15V
O u tp u ts
S = Single
D = Dual
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ATW28xxD

ADVANCED ANALOG HYBRID-HIGH RELIABILITY DC/DC CONVERTERS

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