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SMRT283.315THR 参数 Datasheet PDF下载

SMRT283.315THR图片预览
型号: SMRT283.315THR
PDF下载: 下载PDF文件 查看货源
内容描述: SMRT单,双和三DC / DC转换器 [SMRT Single, Dual and Triple DC/DC Converters]
分类和应用: 转换器
文件页数/大小: 17 页 / 243 K
品牌: CRANE [ Crane Aerospace & Electronics. ]
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Crane Aerospace & Electronics Power Solutions
SMRT Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 35 WATT
FEATURES
-55°C to +125°C operation
19 to 56 VDC input
80 V for 100 ms transient protection
Dual Magnetic feedback
Inhibit function and output trim
Indefinite short circuit protection
Radiation tolerant to
1 x 10
12
protons/cm
2
neutron or proton fluence
10
11
rads(Si)/sec dose rate
3 x 10
5
rads(Si) total dose
SEU 60 MeV cm
2
/mg
Meets MIL-STD-704A emergency operation and tran-
sient standards
No minimum load required
5 port isolated design
Isolated synchronization input
Output trimmable up to +25% and -45% (see trim
instructions)
MODELS
VDC O
UTPUT
SINGLE
3.3
5
12
15
DUAL
±5
±12
±15
• Topology – Two-Phase Flyback
TRIPLE
+3.3 & ±12
+3.3 & ±15
+5 & ±12
+5 & ±15
DESCRIPTION
The SMRT Series™ of DC/DC converters offers up to 35
watts of power in a radiation tolerant design. The low profile
SMRT converters are manufactured in Interpoint’s fully certified
and qualified MIL-STD-1772 production facility and packaged
in hermetically sealed steel cases. They are ideal for use in
programs requiring high reliability, small size, and high levels of
radiation hardening assurance.
The SMRT converters are switching regulators which use a two-
phase, phase shifted flyback design with a nominal switching
frequency of 300 kHz. Close regulation is maintained with
advanced constant frequency pulse width modulation design
techniques. The SMRT’s feed-forward compensation and
discontinuous topologies provide high levels (80 dB peak) of
input-to-output ripple rejection. A minimum load of 2% of full load
should be used on outputs at TID of 100k rads(Si) or greater to
ensure tight regulation over the full input range.
Two independent feedback loops are used to regulate the dual
and triple outputs, one feedback loop regulates the two-phased
single output. Each set of outputs is electrically isolated from
the other and from the input. Sets are defined as follows:
Two paralleled power trains supplying a single output; one
independent power train providing a single output; and one
independent power train providing two outputs (neg. output is
cross-regulated). This product configuration eliminates cross
regulation effects between output sets.
Configurations include:
• Single Output: One two-phased single output
• Dual Output: Two single phase single outputs
• Triple Output: One single phase independent Main output and one
single phase dual output. (± Auxiliary output).
U
NDERVOLTAGE
L
OCKOUT
The converters have an undervoltage lockout that will allow
power conversion at 17 volts on a rising input voltage and a
conversion shut-down on a falling voltage at approximately 14.5
volts.
Crane Aerospace & Electronics
Electronics Group (Interpoint Brand)
PO Box 97005 • Redmond WA 98073-9705
425.882.3100 • electronics@craneae.com
www.craneae.com
Page 1 of 17
Rev B – 20080213