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SMTR Datasheet(PDF) 1 Page - Interpoint Corporation Company |
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SMTR Datasheet(HTML) 1 Page - Interpoint Corporation Company |
1 / 14 page DESCRIPTION The Interpoint® SMTR Series™ of 28 volt dc-dc converters offers up to 30 watts of output power from single or dual configurations. They operate over the full military temperature range of -55°C to +125°C with up to 84% efficiency. SMTR converters are packaged in hermetically sealed metal enclosures, making them ideal for use in military, aerospace and other high reliability applications. Screening SMTR 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 13 and Table 10 on page 14 for more information. converter DeSign The SMTR converters are constant frequency, pulse-width modulated switching regulators which use a quasi-square wave, single ended, forward converter design. Tight load regulation is maintained by using a wide bandwidth magnetic feedback and, on single output models, through use of remote sense. On dual output models, the positive output is independently regulated and the negative output is cross regulated through the use of tightly- coupled magnetics. SMTR converters have an internal input filter that helps reduce the need for external components in normal operation. Use our SFMC EMI input filter to meet the requirements of MIL-STD- 461C’s CE03. For the lowest noise performance, connection of the case to input common is recommended. The connection can be hard-wired or ac coupled with a small ceramic bypass capacitor. Indefinite short circuit protection and overload protection are provided by a constant current-limit feature. This protective system senses current in the converter’s secondary stage and limits it to approximately 140% of the maximum rated output current. Synchronization Synchronizing the converter with the system clock allows the designer to confine switching noise to clock transitions, minimizing interference and reducing the need for filtering. In sync mode, the converter will run at any frequency between 500 kHz and 675 kHz. The sync control operates with an active high at any duty cycle between 40% and 60%. The sync pin should be connected to input common pin when not in use. WiDe voltage range SMTR converters are designed to provide full power operation over the input voltage range of 16 to 40 volts. Operation below 16 volts, including MIL-STD-704D emergency power conditions is possible with derated power. Refer to the low line dropout graph, Figure 22 on page 10, for details. 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) • Operating temperature -55° to +125°C • Qualified to MIL-PRF-38534 Class H and K • Input voltage range 16 to 40 volts • Transient protection 50 volts for 50 ms • Fully isolated, magnetic feedback • Fixed high frequency switching, 600 kHz typical • Trim function or remote sense on single output models • Inhibit and synchronization functions • Indefinite short circuit protection • Typical efficiency up to 83% MODELS output voltage (v) SINGLE DUAL 3.3 ±5 5 ±12 12 ±15 15 SMTR Single and Dual DC-DC Converters Page 1 of 14 28 VOLT INPUT – 30 WATT SMTR Rev AC - 2015.10.14 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 Crane Aerospace & Electronics Power Solutions |
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Descripción similar - SMTR_16 |
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