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VOLUME -24 NUMBER 8
Publication Date: 08/1/2009
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October 2009 Issue
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SynQor Hi-Rel Converters Provide 120W
High-reliability, 270V DC/DC converters provide 120W power.
Boxborough, MA — SynQor has expanded its MilQor
product line of 270V input DC/DC converters and complementary EMI filters which have been designed specifically for high-reliability applications. The MQFL-270 series of DC/DC converters utilizes the company's field-proven, high-efficiency synchronous rectification technology to achieve breakthrough efficiency levels in excess of 88 percent. This effectively reduces the dissipated heat by half as compared to other 120W converters in the industry standard full-size (FL) package.
Fully encased using the company's QorSeal
technology, the converters are constructed to withstand and survive the harshenvironments and long-term storage requirements of avionics, missile and other flight applications.
High-Rel MQFL-270 DC/DC converters operate at full power from -55 to +125°C and accept continuous input voltages of 155 to 400V while permitting higher transient input voltages of 475V for 1 second. Single output modules are offered in eleven versions ranging from 1.5 to 28V, including 1.5, 1.8, 2.5, 3.3, 5.0, 6.0, 7.5, 9.0, 12, 15 and 28V. Single output power and current levels are as high as 120W and 40A, respectively. Using the active current sharing function, an unlimited number of single-output converters can be paralleled to achieve kilowatts of power. Dual output converters are also available with output voltages of ±5V, ±12V and ±15V with the capability of providing up to 80 percent power from either output.
The feature-rich converters include fixed-frequency switching, no opto-isolators, remote sense, clock synchronization, primary- and secondary-side enable, continuous short-circuit protection, input under-voltage lockout and input over-voltage shutdown. The Hi-Rel MQME-270 EMI filter modules rated at 320W (2A) provide >80dB of differential attenuation (and >60dB of common-mode attenuation) at 500kHz. Used together, MilQor DC/DC converters and EMI filters permit compliance with MIL-STD-704(A-F), RTCA/DO-160-E (Section 16), MIL-STD-1275B, and DEF-STAN 61-5(6/5), as well as MIL-STD-461(C-E) and RTCA/DO-160E (Section 22; Lightning).
Contact: SynQor, 155 Swanson Road, Boxborough, MA 01719-1316
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