ATR28XXS_07 Datasheet, PDF (1/12 Pages) International Rectifier – HYBRID-HIGH RELIABILITY DC/DC CONVERTER

PD - 94549B
HYBRID-HIGH RELIABILITY
DC/DC CONVERTER
ATR28XXS SERIES
28V Input, Single Output
Description
The ATR28XXS 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 3.3V, 5V, 12V and
15V single 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. These
devices 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 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.
ATR
Features
16V to 40VDC Input Range (28VDC Nominal)
3.3V, 5V, 12V and 15V Outputs Available
Indefinite Short Circuit and Overload
Protection
Up to 35W/in³ Power Density
30W Output Power Models
Fast Loop Response for Superior Transient
Characteristics
Operating Temperature Range from -55°C to
+125°C
Popular Industry Standard Pin-Out
Resistance Seam Welded Case for Superior
Long Term Hermeticity
Ceramic Feed-thru Pins
External Synchronization
Efficiencies up to 84%
Shutdown from External Signal
Military Screening
Standard Microcircuit Drawings Available
Extensive computer simulation using complex modeling
enables rapid design modification to be provided.
Contact IR Santa Clara with specific requirements.
www.irf.com
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01/15/07