LAMBDA ADVANCED ANALOG INC.
位
ATW2800D Series
Dual Output, Hybrid - High Reliability
DC/DC Converter
DESCRIPTION
The ATW2800D 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-704 input requirements, these
devices have nominal 28VDC inputs with 鹵12V and
鹵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 270KHz. 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.
Refer to Part Number section for more severe
enviroments.
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 Inspection (P.I.)
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
and screening can be accommodated. Contact
Lambda Advanced Analog for special requirements.
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FEATURES
18 To 40 Volt Input Range (28VDC Nominal)
鹵
12 and
鹵
15 Volt Outputs Available
Indefinite Short Circuit and Overload
Protection
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22.8 W/in Power Density
30 Watts Output Power
Fast Loop Response For Superior Transient
Characteristics
Operating Temperature Range From -55擄C to
+125擄C Available
Popular Industry Standard Pin-Out
Resistance Seam Welded Case For Superior
Long Term Hermeticity
Efficiencies Up to 85%
Shutdown From External Signal
Full Military Screening
200,000 Hour MTBF at 85擄C
MIL-PRF-38534 Compliant Versions
Available
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