Power Electronics / Power Management


Conduction cooled power supply

24 July 2013 Power Electronics / Power Management

Vicor has introduced a new conduction cooled version of its high-efficiency Westcor MicroPAC power factor corrected AC-DC power system, enabling system designers to forego fan and forced-air cooling in power systems designed for demanding military, industrial, telecommunications and other applications requiring fanless and/or noiseless operation in restrictive enclosures.

The new units incorporate VI Chip BCM bus converters and are ideally suited for distributed power architectures, providing up to 1300 W of continuous power at up to 92% efficiency in a compact 101,6 x 43,7 x 189,2 mm package. They support the universal AC input range (85–264 V a.c.) and offer semi-regulated output voltages of 12, 14, 24, 28, 36 and 48 V d.c. via four factory-configurable isolated outputs.

These systems also feature optional eco-mode operation settings via which the individual outputs are powered on only as needed, further enhancing overall power efficiency.

System designers seeking the flexibility to partition multiple voltage outputs rather than use two separate power supplies can configure MicroPACs with a combination of four BCM high-voltage bus converters, which may be factory configured as single outputs, parallel outputs, or a series output with integrated current sharing. For applications requiring higher power levels, MicroPACs can be configured in arrays up to several kilowatts with box-to-box current sharing.

The MicroPAC conduction-cooled power system has a base plate operational temperature range from -40°C to +65°C. The power supply lid (base plate) is designed to attach to heatsinking surfaces, eliminating the need for fans or forced air cooling and enabling system designers to employ sealed enclosures to protect against moisture and particulate ingress.





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