Picor Intros QPI-3/5/6 Active EMI Filters for Telecom
Picor Corp. (Andover, MA), a power IC subsidiary of Vicor Corp. (Andover, MA), introduced three new additions to the QPI family of active EMI filters. The new products, the QPI-3, QPI-5 and QPI-6, support 24 V and 48 V dc-dc converter applications with high current ratings and low costs. The QPI family supports all dc-dc converters in IT, telecom, industrial, COTS and other 24 Vdc or 48 Vdc applications.
Providing attenuation from 150 kHz to 30 MHz, the QPI products deliver over 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 1.0 in x 1.0 in x 0.2 in (25.4 mm x 25.4 mm x 5.1 mm) 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 Vdc to 76 Vdc 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 Vdc to 40 Vdc 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.
The surface-mount LGA package is rated for operation over a case temperature range of –40 °C to +100 °C, with an efficiency of 99%. Units may be placed in series for even higher attenuation. The QPI devices are packaged in anti-static tubes. Prices start at $19.33 for single-piece quantities. Evaluation boards are available. Delivery is stock to six weeks.
