PD-97809B
D5001R803R3P
HIGH RELIABILITY
RADIATION HARDENED
LOW POWER
26 to 50V Input, Regulated Dual Output
(+1.8V and +3.3V)
DC-DC CONVERTER
Description
The D-Series of DC-DC converters are low power radiation
hardened, high reliability devices designed for 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,
mechanicalshock, and vibration. Allcomponents are fully de-rated to
meet the requirements of EEE-INST-002. Extensive documentation
including worst case analysis, radiation susceptibility, thermal
analysis, stress analysis, and reliabilityanalysis are available.
D
Features
Total Dose Guaranteed to 50 kRad(Si)
SEE with LET up to 40 MeV·cm2/mg
Low Weight < 55 grams
26V to 55V DC Input Range
Up to 10W Output Power
Independently Regulated Outputs:
+1.8V and +3.3V and Other Outputs Available
55°C to +80°C Operating Temperature Range
The D-Series converters have two outputs, each is independently
regulated. The outputs can be both positive or one positive and
one negative. The D-Series converters incorporate a fixed
frequency flyback power stage topology and internal EMI
filter. The converters include an enhanced input EMI filter
that meets most major satellite power buses. The converters
can be remotely turned on and off via an Inhibit pin. Additional
Inhibit pins are also provided to control the outputs individually. This
feature facilitates turn-on outputs sequencing if desired. Each
converter is encased in a cold rolled steel hermetic package.
The package measures 1.80"L x 1.40"W x 0.42"H and weighs
less than 55 grams. The package utilizes rugged ceramic
feed-through copper core pins and is hermetically sealed
using parallel seam welding. Two package options are available.
Please refer to page 8 for I/O configurations.
100M @ 100VDC Isolation
Input Under-Voltage Protection
Meets Conducted Emission Requirements
of Most Major Power Buses:
100Hz -100kHz: 80dBArms
100kHz - 10MHz: Log-linear Decrease
10MHz - 50MHz: 40dBArms
Short Circuit and Overload Protection
Meets the De-rating Requirements of
EEE-INST-002
On/Off Control via Converter’s Inhibit Pin
and Individual Output’s Inhibit Pin
High CS Damping
Environmental screening includes temperature cycling, constant
acceleration, fine and gross leak, and burn-in as specified by
MIL-PRF-38534 for class H hybrids.
Applications
Launch Vehicles
Communication Systems
Geostationary or Low Earth Orbit Satellites
Non-flight versions of the D-Series converters are available
for system development purposes. Variations in electrical
specifications and screening to meet custom requirements
can be accommodated.
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2016-08-09