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LAMBDA ADVANCED ANALOG INC.
ATR2800T Series
Hybrid - High Reliability
High Power Triple Output DC/DC Converters
DESCRIPTION
and screening can be accommodated. Contact
The ATR2800T Series of DC/DC converters provide
30 watts of output power over the full military
temperature range with no derating. These devices
are pin compatible with the Lambda Advanced
Analog ATO series converters but offer twice the
maximum output power in a lower profile package.
A custom CMOS ASIC pulse width modulator
operating at a nominal switching frequency of
550KHz combined with a unique magnetic feedback
circuit reduces circuit complexity for enhanced
reliability. These converters provide 500 volt input
to output isolation and operate in highly efficient
single forward mode.
Lambda
Advanced
Analog
with
specific
requirements.
FEATURES
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30 Watt Output Power
Flexible Output Loading
-55 to +125°C Operation
Pin Compatible With ATO
0.410” Maximum Height
16 to 40 Volt Input Range
The advanced feedback design and high operating
frequency provide an extremely wide bandwidth
control loop with high gain and phase margin. This
results in fast dynamic line and load response as
well as superior audio rejection. The control loop is
compensated to provide optimum performance over
the full military temperature range and over the 16
to 40 volt input voltage range.
500 Volt Input to Output Isolation
High Audio Rejection
MIL-STD-704 Compatible
Load Fault Protection – Short Circuit and
Overload
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TTL Level Compatible Synchronization
These converters are protected against both
continuous output short circuits and output overload.
Either load fault condition will result in operating in a
low power dissipation foldback mode.
The
converters will shut down for approximately 15
milliseconds, then attempt to restart. This cycle will
continue indefinitely unless the load fault is
corrected.
Recovery to normal operation is
automatic upon removal of the load fault.
Manufactured in a facility fully qualified to MIL-PRF-
38534, these converters are available in four
screening grades to satisfy a wide range of
requirements. The CH grade is fully compliant to
the requirements of MIL-PRF-38534 for class H.
The HB grade is processed and screened to the
class H requirement, but may not necessarily meet
all of the other MIL-PRF-38534 requirements, e.g.,
element evaluation and Periodic Inspections (PI) not
required. Both grades are tested to meet the
complete group “A” test specification over the full
military temperature range without output power
deration. Two grades with more limited screening
are also available for use in less demanding
applications. Variations in electrical, mechanical
INFINEON [ Infineon ]
