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SMFL2815S/KR Datasheet(PDF) 1 Page - Interpoint Corporation Company |
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SMFL2815S/KR Datasheet(HTML) 1 Page - Interpoint Corporation Company |
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1 / 15 page  description The Interpoint® SMFL Series™ 28 volt dc-dc converters are rated up to 65 watts output power over a -55°C to +125°C temperature range with a 28 volt nominal input. On dual output models, up to 70% of the rated output power can be drawn from either the positive or negative outputs. The welded, hermetically sealed package is only 3.005 x 1.505 x 0.400 inches. Screening SMFL converters offer screening options to space prototype (O), Class H or K and radiation hardness assurance (RHA) levels P - 30 krad(Si), L - 50 krad(Si) or R - 100 krad(Si). Single event effects (SEE) LET performance to 86 MeV cm2/mg. See Table 9 on page 14 and Table 10 on page 15 for more information. DeSign FeatureS The SMFL Series converters are switching regulators that use a quasi-square wave, single ended forward converter design with a constant switching frequency of 600 kHz. Isolation between input and output circuits is provided with a transformer in the forward path and wide bandwidth magnetic coupling in the feedback control loop. The SMFL Series uses a unique dual loop feedback technique that controls output current with an inner feedback loop and output voltage with a cascaded voltage mode feedback loop. The additional secondary current mode feedback loop improves transient response in a manner similar to primary current mode control and allows for ease of paralleling. Tight load regulation is achieved through a wide-bandwidth magnetic feedback circuit. inhibit The SMFL Series converters have two inhibit terminals (Inhibit 1 and Inhibit 2) that can be used to disable power conversion, resulting in a very low quiescent input current. See Table 5 on page 6 for specifications. Sync Converters may be synced to an external clock (525 to 675 kHz) or to one another by using the sync in or out pins. See Table 5 on page 6 for specifications. Features • Radiation tolerant space dc-dc converter - Single event effects (SEE) LET performance to 86 MeV cm2/mg - Total ionizing dose (TID) guaranteed per MIL-STD-883 method 1019, radiation hardness assurance (RHA) P = 30 krad(Si), L = 50 krad(Si), R = 100 krad(Si) - 50 - 300 rad(Si)/sec dose rate (Condition A) - 10 mrad(Si)/sec dose rate (Condition D) • Parallel up to 3 converters—maximum recommended power is 80% of the total available power. • Operating temperature -55°C to +125°C • Qualified to MIL-PRF-38534 Class H and K • Input voltage range 16 to 40 volts • Transient protection up to 80 volts for 50 ms - Converter will shut down at an input voltage above approximately 45 volts • Fully isolated, magnetic feedback • Fixed high switching frequency • Remote sense and output trim on single output models • Primary and secondary inhibit function • Synchronization input and output • Indefinite short circuit protection • High power density with up to 85% typical efficiency MODELS OuTPuT VOLTAgE (V) SINgLE DuAL 3.3 ±5 5 ±12 12 ±15 15 Crane Aerospace & Electronics Power Solutions sMFL single and dual dc-dc converters Page 1 of 15 28 VoLt input – 65 Watt SMFL Rev AC - 2016.02.17 Crane Aerospace & Electronics Power Solutions – Interpoint Products 10301 Willows Rd. NE, Redmond, WA 98052 +1 425-882-3100 • power@crane-eg.com www.craneae.com/interpoint |
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