IXYS intros DMA150 – new generation of compact, efficient three-phase rectifier bridges

BIEL, SWITZERLAND: IXYS Corp. has announced an addition to the three-phase bridge rectifier module range with a combination of two MINIBLOC (JEDEC: SOT-227B) packages.

“Traditional input power rectification solutions that convert three-phase alternating current (AC) power to direct current (DC) are bulky and do not necessarily make the most efficient use of space and materials and can be expensive,” commented Bradley Green, Vice President of International Sales for IXYS. “With this innovation, IXYS can propose a lower profile, lower cost dual MINIBLOC solution which replaces the need for the historic single large module design.”

The split of a three-phase rectifier bridge into a low-side - DMA150YA1600NA - and a high-side - DMA150YA1600NA - configuration facilitates an output current rating of 150A minimum. When comparing to the existing single module solution of a VUO160-16N07, the 2xDMA system provides a smaller footprint offering which allows a reduction in system size both in height and real estate.

The robustness of the established MINIBLOC package with its screw terminals supports the new compact design for high current rectification. The height of 12 mm allows the engineer to arrange a lower parasitic inductance design. An optimized DCB-substrate fulfils the needs of an improved thermal management with a reliable isolation performance. Required ruggedness against current surge events is guaranteed by an optimized layout and improved contact area for the diode die array.

With the highly sophisticated diode technology of IXYS, the 2xDMA provides an optimized three-phase rectifier module combination for every application where mains rectification is needed such as motor drive, welding and high power conversion.

With the release of the DMA range customers can now utilise the rugged MINIBLOCTM package as a basic building block for many topologies. For example, the DMA in combination with IXA60IF1200NA (XPTTM IGBT with free-wheeling diode) and DSEP2x61-12A (dual HiPerFREDTM fast diodes) can be arranged in a compact design for a converter brake inverter (CBI) system for motor drive applications thereby totally removing the need for soldered connections and the environment impact of such a process.

The DMA range of rectifiers provides high efficiency and high power density at a competitive cost.