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| ( 01 Sep 2010 ) |
| By Margery Conner, Technical Editor, EDN |
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Enpirion has introduced a family of ultrasmall PSIP (power-supply-in-package) devices. The EN6300 series of voltage-mode, synchronous, buck dc/dc converters includes the 3A EN6337QI and the 4A EN6347QI, both measuring 4×7×1.85mm in 38-pin QFN packages; the 8A EN6360QI, measuring 8×11×3mm in 68-pin QFN packages; and the 12A EN63A0QI, measuring 10×11×3mm in 76-pin QFN packages. The nonisolated devices achieve 113W/in² power density, or 17.6W/cm², by integrating the inductor, power switches, gate drive, controller, and loop compensation.
Input voltage ranges from 2.375 to 6.6V, and peak efficiencies for the parts are 95 and 96 percent for the 6337/47 and 6360/63A0, respectively. Enpirion claims that the efficiency curve flattens across the load range rather than peaking sharply at full load.
The parts target use in applications including blade servers, RAID (redundant-arrayof- inexpensive-disk) storage systems, LAN/SAN (local-area-network/storage-area-network) adapter cards, wireless base stations, industrial automation, test and measurement, embedded computing, communications, and multifunction printers.
Enpirion
Enpirion
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