MODULES QPI Series A C T I V E E M I F I LT E R Features • • • • • • Up to 60dB CM attenuation at 250kHz. Up to 80dB DM attenuation at 250kHz. Efficiency: >99% at full load. Surface-mount LGA package. Integrated hot-swap in selected models. Support PICMG 3.0 ATCA requirements. Active EMI Filter (QPI) PRODUCT DESCRIPTION The QPI family of active EMI filters provides conducted common-mode (CM) and differential-mode (DM) attenuation from 150kHz to 30MHz (CISPR22 range). The proprietary active filtering circuit provides superior attenuation at low frequencies intended to support EN Class B limits, including PICMG 3.0 for ATCA. Models QPI-3 through QPI-8 are designed to work with most switch-mode power supplies. The QPI-9 through QPI-12 products are designed specifically for use with Vicor’s V•I Chip power conversion products. Full-size QPI models are 25x25x4.5mm SiP (System in Package), with LGA mounting. QPI-11 and QPI-12 are half size 12.5x25x4.5mm SiPs. Selection Tables Typical Configuration Not for design use; see data sheet. 242 Performance