SOURCE: Vicor Corporation

Vicor Corporation

February 06, 2012 14:09 ET

New Picor QuietPower QPI-21 Provides High Density, Higher-Performance Active EMI Filtering for DC-DC Converters

Compared to Conventional Passive Filter Designs, Picor's Advanced Active Filtering Reduces PCB Area, Increases Attenuation Density, Reduces Susceptibility, and Reduces Power Dissipation

ORLANDO, FL--(Marketwire - Feb 6, 2012) - APEC 2012 -- Vicor Corporation (NASDAQ: VICR), today announced the introduction of the Picor QuietPower® QPI-21 High Density Active EMI Filter for DC-DC converters. Supporting 48V DC-DC converter designs up to 14A for data communications and telecommunication applications, the QuietPower QPI-21 provides > 99.5% efficiency while achieving a new level of filtering performance.

The QuietPower QPI-21 is packaged in a high density, one-square-inch Land Grid Array (LGA) surface mount package that reduces PCB board area consumed by EMI filtering, ensuring ultra efficient board utilization. The filter's 0.2" height maximizes airflow for space constrained designs, making it an ideal fit for advanced blade-architecture applications. These density advantages are complemented by new performance enhancements enabling higher frequency attenuation across various system configurations than earlier-generation QuietPower QPI-series filters.

The QuietPower QPI‐21 attenuates conducted common mode (CM) and differential mode (DM) noise over the CISPR22 frequency range of 150 kHz to 30 MHz (45dB for CM and 80dB for DM attenuation at 250 KHz). The filter is designed for use in 48V bus (36 - 76V) systems, with 100VDC/100ms surge capability, and operates over a wide temperature range of -40°C to +125°C and up to an ambient temperature of 65°C without de‐rating. The QPI‐21 supports the PICMG® 3.0 specification for filtering system boards to the EN55022 Class B limits and is also tolerant to all DC-DC converter grounding schemes.

The QuietPower QPI-21 is the newest addition to the Picor QuietPower portfolio of high density EMI input and output filters, addressing multiple voltage rail/bus needs for applications in aerospace and industrial, in addition to datacom and telecom. The QuietPower QPI-21, like all QuietPower filters, is a universal filter for use with DC-DC converters from any manufacturer.

"The combination of form factor, attenuation performance, and efficiency within the QuietPower QPI-21 exceeds the capabilities of conventional passive filters," said Chester Firek, Senior Product Marketing Manager, Picor. "These advantages distinguish the QuietPower QPI-21 as the ideal EMI filter for demanding, high density datacom and telecomm systems with board space and/or airflow constraints."

Pricing and Availability
The QuietPower QPI-21 is available in two package types: the QPI-21LZ (lidded LGA package) and the QPI-21LZ-01 (open frame LGA package). Both QPI-21 package types are available at $17.04 for OEM quantities. For a datasheet and more information on QuietPower QPI-21, visit To order, email or call 1-800-735-6200.

Picor Semiconductor Power Solutions

Picor provides high-performance silicon-centric solutions in power conversion and power management. Picor's silicon-centric products complement Vicor's power technology and maintain the Vicor tradition of product innovation and performance.

About Vicor Corporation

Headquartered in Andover, Massachusetts, Vicor Corporation designs, manufactures and markets innovative, high performance modular power components, from bricks to semiconductor-centric solutions, to enable customers to efficiently convert and manage power from the wall plug to the point-of-load. Complementing an extensive portfolio of patented innovations in power conversion and power distribution with significant application development expertise, Vicor offers comprehensive product lines addressing a broad range of power conversion and management requirements across all power distribution architectures, including CPA, DPA, IBA, FPA and CBA. Vicor focuses on solutions for performance-critical applications in the following markets: enterprise and high performance computing, telecommunications and network infrastructure, industrial equipment and automation, vehicles and transportation and aerospace and defense electronics.

Picor, QuietPower, and Vicor are trademarks of Vicor Corporation.

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