Innovative materials/manufacturing for a prototype 600-1000VDC DC/DC Converter for Shipboard Radar Navy SBIR FY2010.2 Sol No.: Navy SBIR FY2010.2 Topic No.: N102-153 Topic Title: Innovative materials/manufacturing for a prototype 600-1000VDC DC/DC Converter for Shipboard Radar Proposal No.: N102-153-0363 Firm: Diversified Technologies, Inc. 35 Wiggins Ave. Bedford, Massachusetts 01730 Contact: Neal Butler Phone: (781) 275-9444 Web Site: www.divtecs.com Abstract: The limiting technology for solid-state phased-array radars has been the RF transmit/receive (T/R) modules. As these become mature, a critical supporting technology is the power supply. Subarrays of T/R modules require a power supply that converts an unregulated DC input at 650 V to 28 V with a peak power of 2.5 kW and 30% duty. The supply must have a power density of over 200 W/in3 and efficiency greater than 90%. Such a converter does not currently exist. In this SBIR, DTI proposes to develop a new converter that is substantially more compact and efficient than is available at present. Achieving a high power density requires operation at a high frequency to minimize the size of the capacitors, transformers, and inductors. The trade-off, however, is that the losses - switching losses in the transistors and magnetic core losses - increase with frequency. To minimize these losses and permit operation at high frequency, the converter will be based on state-of-the-art field-effect transistors. These transistors will have low losses because of their fast switching speeds, produced by an innovative gate drive previously developed by DTI. Benefits: The power converter developed under the SBIR will a critical part of compact solid-state phased-array radars. The technology will also be applied to industrial power converters, telecommunication, and data servers. Return