EMI Filters Target 24-V and 48-V DC-DC converters

Jan 5, 2005 4:18 PM
Edited by PETech Staff

Picor, a subsidiary of Vicor, has introduced three new additions to the QPI family of active EMI filters. The QPI-3, QPI-5 and QPI-6 support 24-V and 48-V dc-dc converter applications with higher current ratings and lower costs. Providing attenuation from 150 kHz to 30 MHz, the QPI products deliver more than 40 dB of common-mode and more than 70 dB of differential-mode noise attenuation at 500 kHz.

All products are pin and footprint compatible with previous versions in compact 1-in. × 1-in. × 0.2-in. surface-mount packages, offering board space savings of 50% to 80% over passive EMI filter solutions.

The QPI-6 meets the specifications for the international 36 V to 76 V telecom bus, including the 100-V, 100-ms surge requirement. Rated at 14 A, the unit supports single or multiple dc-dc converters requiring up to 672 W of input power at 48-V input.

The QPI-3 and QPI–5 operate over a 10-V to 40-V range to support industrial bus and COTS applications. The QPI-3 and QPI–5 are rated at 7 A and 14 A, respectively.

The units support single or multiple dc-dc converters requiring up to 360 W of input power at 24-V input. Prices start at $19.33 (single piece).

For a data sheet and other information, visit www.picorpower.com.

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