Not Recommended for New Designs QPI Filters QPI-12LZ S CUNRTL S 7A VI Chip EMI Filter SiP Product Description Features & Benefits 45dB CM attenuation at 1MHz (50) The QPI-12 EMI lter is specically designed to attenuate conducted common-mode (CM) and differential-mode (DM) noise 75dB DM attenuation at 1MHz (50) of Vicor VI Chip products, such as the PRM, VTM and BCM 80V (max input) DC converters, to comply with the CISPR22 standard requirements for 100V surge 100ms conducted noise measurements. The lter is designed to operate DC up to 80V , 100V surge, and supports 7A loads up to 85C (T ) DC DC A 1,500V hipot hold off to shield plane DC without de-rating. 7A rating Designed for the telecom bus range, the VI Chip EMI lter supports Low-profile LGA package the PICMG 3.0 specication for ltering system boards to the 2 ~1/2in area EN55022 Class B limits. 40 to +125C PCB temperature (see Figure 6) Efficiency >99% TV Certified Applications VI Chip Input EMI Filter Telecom and ATCA boards Package Information 12.9 x 25.3 x 5.0mm, lidded SiP (System-in-Package) Typical Applications 12.4 x 24.9 x 4.09mm, open-frame L BUS+ BUS+ QPI+ IN+ OUT+ IN+ OUT+ CB1 CIN QPI-12 PRM VTM LOAD BUS BUS QPI IN OUT IN OUT Optional Shield Chassis Connection CY1 CY2 CY3 CY4 Chassis/Shield Shield Plane a Typical QPI-12 application schematic with Vicor PRM and VTM modules BUS+ BUS+ QPI+ IN+ OUT+ CB1 CIN LOAD QPI-12 BCM Optional Chassis Connection BUS BUS QPI IN OUT Shield CY1 CY2 CY3 CY4 Chassis/Shield Shield Plane a Typical QPI-12 application schematic with Vicor BCM module a CB1 capacitor, referenced in all schematics, is a 47F electrolytic United Chemi-Con EMVE101ARA470MKE0S or equivalent. CY1 to CY4, referenced in all schematics, are 4.7nF high-voltage safety capacitors Vishay VY1472M63Y5UQ63V0 or equivalent. QPI Filters Rev 2.5 Page 1 of 15 01/2021QPI-12LZ Not Recommended for New Designs Contents Order Information 3 Absolute Maximum Ratings 3 Electrical Characteristics 3 Package Pinout 4 Applications Information 5 EMI Sources 5 EMI Filtering 5 EMI Management 6 Attenuation Test Set Ups 6 Attenuation Plots 7 Current De-Rating 9 Converter Output Grounding 10 QPI Insertion Loss Measurements and Test Circuits 11 Package Outline Drawings 12 Pad and Stencil Denitions 13 PCB Layout Recommendations 14 PCB Layout 14 Post-Solder Cleaning 14 QPI-12 Mechanical Data 14 Product Warranty 15 QPI Filters Rev 2.5 Page 2 of 15 01/2021