Active EMI Input Filters (QPI Series) For 24/28 V and 48/60 V BUS applications Features Up to 60 dB CM attenuation at 250 kHz 25 mm Up to 80 dB DM attenuation at 250 kHz 4.5 mm Efficiency: >99% at full load High density, low profile LGA package QPI 25 mm Integrated Hot-Swap in select models US AND FORIEGN PATENTS PENDING -40° to +100°C PCB temperature •082 PHIL 0325A TÜV approved Saves up to 50% board space vs. standard filters QUIETPOWER™ Compatible with most DC-DC converters Product Description Applications The QPI family of active EMI filters provides conducted common-mode (CM) and differential-mode (DM) attenuation from 150 kHz to 30 MHz (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 boards. PICMG® 3.0 ATCA applications Networking and communications Fan tray assemblies Telecom Industrial Military In comparison to passive solutions, the use of active filtering reduces the volume of the common-mode choke, providing a low profile, surface mount device. Smaller size saves valuable board real estate and the reduced height enhances airflow in blade applications. QPI Evaluation Boards Available For more information, go to picorpower.com Part Numbering Part Number (Z = RoHS) Input Voltage Nominal Range Current Rating CM Attenuation @250 kHz DM Attenuation @250 kHz Hipot Integrated Hot-Swap Package QPI-3L ( Z) 24/28 Vdc 10 – 40 Vdc 7A 60 dB 80 dB 707 Vdc — full QPI-4L ( Z) 48/60 Vdc 30 – 80 Vdc 7A 40 dB 70 dB 1,500 Vdc — full QPI-5L ( Z) 24/28 Vdc 10 – 40 Vdc 14 A 60 dB 80 dB 707 Vdc — full QPI-6L ( Z) 48/60 Vdc 30 – 80 Vdc 14 A 40 dB 80 dB 1,500 Vdc — full QPI-7L ( Z) 24/28 Vdc 18 – 38 Vdc 6A 50 dB 80 dB 707 Vdc Yes full QPI-8L ( Z) 48/60 Vdc 32 – 76 Vdc 6A 40 dB 70 dB 1,500 Vdc Yes full PWRGD PowerGood OV UVEN QPI-7,8 QPI-8 BUS+ BUS+ QPI+ Class B limit Active EMI Filter Hot-Swap Function SW SHIELD BUS- QPI+ QPI- QPI- SW SHIELD Block diagram, QPI with integrated Hot-Swap Conducted EMI scans showing QPI performance. Blue trace = no QPI; Red trace = with QPI. Defining the Quality of Power Through Innovation picorpower.com 800-735-6200 Rev 2.0 6/07 33282 V•I Chip Input EMI Filters (QPI Series) Optimized for V•I Chip applications Features 25 mm 4.5 mm 24/28 V and 48/60 V models Up to 65 dB CM attenuation at 1 MHz Up to 80 dB DM attenuation at 1 MHz QPI-10L Full Size 25 mm US AND FORIEGN PATENTS PENDING Efficiency >99% •079 PHIL 0650A Low profile LGA package Integrated Hot-Swap in select models Supports PICMG® 3.0 ATCA applications QPI-12L Half Size 12.5 mm US AND FORIEGN PATENTS PENDING -40° to +100°C PCB temperature •087 TÜV approved PHIL 0550A QUIETPOWER™ Product Description Applications These QPI filters, optimized for V•I Chips, are specifically designed to attenuate conducted common-mode (CM) and differential-mode (DM) noise of Vicor’s V•I Chip products to comply with the CISPR22 standard requirements for conducted noise measurements. PICMG® 3.0 ATCA applications Networking and communications Fan tray assemblies Designed for the telecom, industrial and military bus ranges, the V•I Chip EMI filter supports filtering system boards to the EN55022 Class B limits. Telecom Industrial Military QPI Evaluation Boards Available For more information, go to picorpower.com Part Numbering Part Number (Z = RoHS) Input Voltage Nominal Range Current Rating CM Attenuation @1 MHz DM Attenuation @1 MHz QPI-9L ( Z) 24/28 Vdc 18 – 38 Vdc 6A 65 dB QPI-10L ( Z) 48/60 Vdc 32 – 76 Vdc 6A 45 dB QPI-11L ( Z) 24/28 Vdc 5 – 50 Vdc 7A QPI-12L ( Z) 48/60 Vdc 10 – 80 Vdc 7A QPI-12 attenuation curves Hipot Integrated Hot-Swap Package 80 dB 707 Vdc Yes full 70 dB 1,500 Vdc Yes full 65 dB 80 dB 707 Vdc — half 45 dB 70 dB 1,500 Vdc — half Total conducted noise of P048K048T24IF & V048K120T025 with QPI-12. Defining the Quality of Power Through Innovation picorpower.com 800-735-6200 Rev 2.0 6/07 33282