Electronic Design

Intermediate Bus Converters Feature High Output Power, Efficiency

Targeted at the telecommunications, networking, computing, and industrial electronics markets, a pair of intermediate bus converters (IBCs) deliver exceptionally high usable output power with a conversion efficiency of 97%. The Emerson Network Power eighth-brick IBC32 has a 300-W output with a typical load regulation of 2.3%, and the quarter-brick IBC60 puts out 642 W with a typical load regulation of 2.5%. Both are designed to operate from a 38- to 55-V dc supply, have a fixed 5:1 conversion ratio, and generate an isolated, unregulated dc output. When fed with a 48-V dc supply, the converters generate a 9.6-V dc output. The devices, the latest additions to the Artesyn family of high-power-density IBCs, are intended primarily for powering multiple downstream non-isolated point-of-load converters in distributed power systems.

Targeted at the telecommunications, networking, computing, and industrial electronics markets, a pair of intermediate bus converters (IBCs) deliver exceptionally high usable output power with a conversion efficiency of 97%. The Emerson Network Power eighth-brick IBC32 has a 300-W output with a typical load regulation of 2.3%, and the quarter-brick IBC60 puts out 642 W with a typical load regulation of 2.5%. Both are designed to operate from a 38- to 55-V dc supply, have a fixed 5:1 conversion ratio, and generate an isolated, unregulated dc output. When fed with a 48-V dc supply, the converters generate a 9.6-V dc output. The devices, the latest additions to the Artesyn family of high-power-density IBCs, are intended primarily for powering multiple downstream non-isolated point-of-load converters in distributed power systems.

The IBCs feature industry-standard pin-outs and footprints and are based on a single-board package designed for through-hole board mounting. The IBC32 measures 2.3 by 0.9 in., while the IBC60 has a 2.3- by 1.45-in footprint and uses dual output pins to facilitate high current transfer. Installed height for both is 0.48 in. They are designed for fully automated assembly to help reduce manufacturing costs. The devices operate over a −40°C to 85°C temperature range without a heatsink and are suitable for both convection-cooled and forced-air environments. In 1000-piece quantities, the IBC32 costs $45, and the IBC60 costs $60. Standard lead times for both are stock to eight weeks. For more information, visit www.emersonnetworkpower.com.

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