Power Electronics

Quarter-brick bus converter provides 380 W

Ericsson Power Modules’ PKM4000BPI series dc-dc modules deliver up to 33 A at 12 V in a quarter brick design. Offering up to 380 W for intermediate voltage bus architectures (IBA), the bus converters also offer such features as latching or non-latching protection, a base plate with optional case-ground pin, and N+1 parallel operation. Input voltage range is 36 V to 75 V.

With a regulation of ±10% over all load and line changes, the modules are available in three ratings. The PKM4304BPI delivers 33 A at 12 V; the PKM4204BPI, 25 A at 12 V; and the PKM4303BPI, 40 A at 9 V.

The PKM4204BPI is offered at a lower price point to benefit those who do not need the higher current rating. Use of the 9-V output model rather than the 12-V versions enables improved efficiency for the nonisolated point-of-load converters (POLs) powered by the bus converters.

The PKM4000BPI series offers a typical efficiency of 96% and provides 1500-Vdc input-to-output isolation. For pricing and availability of the new converters, contact the vendor.

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