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SMRT28515THP bảng dữ liệu(PDF) 1 Page - Crane Aerospace & Electronics. |
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SMRT28515THP bảng dữ liệu(HTML) 1 Page - Crane Aerospace & Electronics. |
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1 / 17 page  FEATURES • -55°C to +125°C operation • 19 to 56 VDC input • 80 V for 100 ms transient protection • Dual Magnetic feedback • Topology – Two-Phase Flyback • Inhibit function and output trim • Indefinite short circuit protection • Radiation tolerant to 1 x 1012 protons/cm2 neutron or proton fluence 1011 rads(Si)/sec dose rate 3 x 105 rads(Si) total dose SEU 60 MeV cm2/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) 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). UNDERVOLTAGE LOCKOUT 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. MODELS VDC OUTPUT SINGLE 3.3 5 12 15 DUAL ±5 ±12 ±15 TRIPLE +3.3 & ±12 +3.3 & ±15 +5 & ±12 +5 & ±15 Crane Aerospace & Electronics Power Solutions SMRT Single, Dual and Triple DC/DC Converters 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 28 VOLT INPUT – 35 WATT |
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