New Industry Products

Interpoint Intros MSS Series of DC/DC Converters

December 06, 2000 by Jeff Shepard

Interpoint (Redmond, WA) has introduced a new family of dc/dc converters, the MSS Series, featuring a built-in EMI filter which meets the requirements of MIL-STD-461E and CE102, no external components required. The MSS Series' 125W converters measure 4.6" x 2.4" x 0.45". It was designed to replace the industry-standard configuration of three separate modules -- EMI filter, converter and output filter -- with one module, which reduces the total footprint and minimizes interconnects.

Controls include sychronization to an external clock for system control or to other converters to prevent beat frequencies. In addition, the converters feature inhibit for remote shut-down and restart and remote sense for maintaining full voltage at the load. Operating temperature is -55 degrees C to 100 degrees C with derating to zero power at 135 degrees C. Also, the new converters have an output that can be adjusted by as much as 12V and an output filter to reduce output ripple.

All of the MSS Series of converters are constructed from surface-mount components soldered to a printed circuit board (PCB). The PCB is attached to a lightweight, metal-matrix composite baseplate which provides the high thermal conductivity of aluminum but a low coefficient of thermal expansion (CTE). The converters are potted for high reliability in harsh environments and offer two screening levels of shock and vibration in addition to burn-in.

The first release in this series is the MSS-MHL with 125W of output power, an 80Vdc to 400Vdc range, and 2.5V to 6V adjustable output. Production units will be available January 2001 or earlier. The next model in the series will be the MSS-MHH, which will have the same power and input range but with a 6V to 18V output range. Other 125W models will have a 16Vdc to 75Vdc input range. Models with the same input and

output options but with 200W or 40W of output power are scheduled for release in 2001.