High density, high performance active EMI filter for DC-DC converters
February 23, 2012 // Paul Buckley
Vicor has introduced the Picor QuietPower QPI-21 high density active EMI filter for DC-DC converters. Supporting 48 V DC-DC converter designs up to 14 A for data communications and telecommunication applications, the QuietPower QPI-21 is an input filter that provides >99.5% efficiency while achieving a new level of filtering performance.
The QuietPower QPI-21 is packaged in a high density, 25 x 25 mm Land Grid Array (LGA) surface mount package that reduces PCB board area consumed by EMI filtering, ensuring ultra efficient board utilization. The filter’s 4.5 mm height maximizes airflow for space constrained designs, making it an ideal fit for advanced blade-architecture applications. The 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 (45 dB for CM and 80 dB for DM attenuation at 250 KHz). The filter is designed for use in 48 V bus (36 – 76 V) systems, with 100 VDC/100ms surge capability, and operates over a wide temperature range of –40 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 making it an ideal EMI filter for demanding, high density datacom and telecomm systems with board space and/or airflow constraints.
Visit Vicor at www.vicorpower.com
Europe leads world in chip market growth
September 02, 2014
In July the European region showed the strongest year-on-year growth of all regions tracked by the World Semiconductor Trade ...
Radar-based blind spot assist to eliminate collisions during turning
German company wins bid to crash cars in China
European semiconductors sales up 14.9% this year
EE Times' annual salary & opinion survey report
Toshiba announces image sensor strategy
September 01, 2014
Toshiba Corp. has issued a press release detailing its strategy for the image sensor market.
DelfMEMS promotes CFO to CEO
Sensata to pay $1-bn for tire pressure sensor leader
ADCs for high dynamic range – successive-approximation or sigma-delta?
- Power Modules: The New Super Power
- Flexible Performance for Network Security Appliances
- Digital Power Management Reduces Energy Costs While Improving System Performance
- Using RF Recording Techniques to Resolve Interference Problems
InterviewA question of Europe
Sir Peter Bonfield sits on the board and has advisory roles in many international companies and universities. With more than 45 years of experience in electronics, computers and communications, here he ...
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Trinamic Motion Control is offering you to win one of four TMCM-1043 development kits for its highly integrated, NEMA 17-compatible TMCM-1043 stepDancer stepper motor module.
Offering designers an easy-to-use PC-based GUI that allows one-click modification of motor drive current, micro-stepping and other key parameters, the intuitive kits are custom designed and developed for...MORE INFO AND LAST MONTH' WINNERS...
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.