![](http://datasheet.mmic.net.cn/170000/S2815S_datasheet_9722810/S2815S_1.png)
01/14/11
www.irf.com
1
HYBRID-HIGH RELIABILITY
RADIATION HARDENED
LOW POWER
DC-DC CONVERTER
S-SERIES
Description
n Total Dose >100K Rad(Si)
n SEE Hardened to LET up to 82 MeV.cm2/mg
n Low Weight < 50 grams
n Magnetically Coupled Feedback
n 18V to 40V DC Input Range
n Up to 10W Output Power
n Single and Dual Output Models Include
3.3, 5, 7,12,15,
±5, ±12 and ±15V
n High Efficiency - to 82%
n -55°C to +125°C Operating Temperature Range
n 100M @ 500VDC Isolation
n Under-Voltage Protection
n Short Circuit and Overload Protection
n Output Over Voltage Limiter
n External Inhibit
n Standard Microcircuit Drawings Available
Features
28V Input, Single/Dual Outpu
t
Applications
Non-flight versions of the S-Series converters are
available for system development purposes. Variations
inelectrical specifications and screening to meet custom
requirements can be accommodated.
The converters incorporate a fixed frequency single
ended forward topology with magnetic feedback and
an internal EMI filter utilizing large multilayer ceramic
capacitors processed per MIL-PRF-49470 for improved
reliability. All models include an external inhibit port .
They are encased in a hermetic 1.71” x 1.31” x 0.45”
steel package and weigh less than 50 grams. The
package utilizes rugged ceramic feed-through copper
core pins and is hermetically sealed using parallel seam
welding.
n Geostationary or Low Earth Orbit Satellites
n Launch Vehicles
n Communication Systems
The S-Series of DC-DC converters are low power
radiation hardened, high reliability devices designed
for hostile radiation environments such as those
encountered by geostationary earth orbit satellites, deep
space probes and communication systems. Features
include small size, high efficiency, low weight and a
high tolerance to total ionizing dose, single event effects,
and environmental stresses such as temperature
extremes, mechanical shock, and vibration. All
components are fully derated to meet the requirements
of MIL-STD-975 and MIL-STD-1547. Extensive
documentation including Radiation Susceptibility,
Thermal Analysis, Stress Analysis and MTBF are
available.
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.
S
PD-94584F