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ATO28XXT Schematic ( PDF Datasheet ) - IRF

Teilenummer ATO28XXT
Beschreibung HYBRID-HIGH RELIABILITY DC/DC CONVERTER
Hersteller IRF
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Gesamt 7 Seiten
ATO28XXT Datasheet, Funktion
PD - 94582A
HYBRID-HIGH RELIABILITY
DC/DC CONVERTER
ATO28XXT SERIES
28V Input, Triple Output
Description
The ATO28XXT Series of DC/DC converters feature
high power density and an extended temperature range
for use in military and industrial applications. Designed
to the nominal input requirements of MIL-STD-704D,
these devices have nominal 28VDC inputs with +5V
and ±12V or +5V and ±15V triple outputs to satisfy a
wide range of requirements. The circuit design
incorporates a pulse width modulated push-pull
topology operating in the feed-forward mode at a
nominal switching frequency of 250KHz. 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. Refer
to Part Numbering section. They are 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 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. Extensive computer simulation
using complex modeling enables modest design
modifications to be accommodated. Contact IR Santa
Clara with specific requirements.
ATO
Features
16V to 40VDC Input Range (28VDC Nominal)
5V, ±12V or 5V, ±15V Outputs Available
Indefinite Short Circuit and Overload Protection
15W Output Power
Fast Loop Response for Superior Transient
Characteristics
Operating Temperature Range from -55°C to
+125°C Available
Popular Industry Standard Pin-out
Resistance Seam Welded Case for Superior
Long Term Hermeticity
Efficiencies up to 81%
Shutdown from External Signal
200,000 Hour MTBF at 85°C
Standard Microcircuit Drawings Available
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1
01/12/07
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ATO28XXT Datasheet, Funktion
ATO28XXT Series
Non-Flanged
Mechanical Outlines
0.040 D X
0.26 L Pins
1.000
0.05
Flanged
1.950
Max
4 X 0.400
=1.600
1.95 2.360
2.700
Max
1.350
Max
0.500
Max
0.500
Max
1.350
Max
Pin Designation
Pin #
1
2
3
4
5
6
7
8
9
10
Designation
+ Input
+5V Output
Output Return
- Dual Output
+ Dual Output
NC
Case Ground
Enable Input
NC
Input Return
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