AHE281XD_15 Datasheet, PDF (1/10 Pages) International Rectifier – HYBRID-HIGH RELIABILITY DC/DC CONVERTER

HYBRID-HIGH RELIABILITY
DC/DC CONVERTER
PD-94555B
AHE28XXD SERIES
28V Input, Dual Output
Description
The AHE 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 ±5V, ±12V and ±15V dual
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.
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.
AHE
Features
n 17V to 40VDC Input Range
n 28VDC Nominal Input
n ± 5V, ±12V and ±15V Outputs Available
n Indefinite Short Circuit and Overload
Protection
n 12.9W/in³ Power Density
n 15W 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 82%
n Shutdown from External Signal
n Military Screening
n 314,000 hour MTBF at 85°C (AUC)
n Standard Microcircuit Drawings Available
www.irf.com
1
01/08/07