QPI-4L Datasheet, PDF (1/8 Pages) Vicor Corporation – 7 Amp Active EMI Filter for 48 V DC Bus

®
QPI-4L
QuietPower^™
7 Amp Active EMI Filter for 48 V DC Bus
Description
The QPI-4 active EMI filter attenuates conducted
common-mode (CM) and differential-mode (DM) noise
over the CISPR22 frequency range of 150 kHz to 30
MHz. The product is designed for use on a 48 Vdc bus
(36-76 Vdc). The QPI-4’s 7 A rating supports multiple
DC-DC converter loads up to a PCB temperature of
60°C. At a 100°C PCB temperature the QPI-4 supports
6 A loads. Designed for the telecom and ITE bus range,
the QPI-4 supports the PICMG^® 3.0 specification for
filtering system boards to the EN55022 Class B limits.
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.
The QPI-4 is available in a 1.0" x 1.0" x 0.2" SiP (System
in Package) with LGA mounting. QPI-4-EVAL1 kits are
available for testing the QPI-4. The evaluation board
has a mounted QPI-4 with screw terminals for quick
in-circuit testing.
Check picorpower.com for the QPI-4-EVAL1 evaluation
board and the QPI-AN1 Application Note.
Features
• >40 dB CM attenuation at 250 kHz
• >70 dB DM attenuation at 250 kHz
• 80 Vdc (max input)
• 7 Amp rating
• 100 Vdc surge 100 ms
• 1,500 Vdc Hi-pot hold off to Shield Plane
• 1.0” x 1.0” x 0.2” SiP (System-in-Package)
• SMT Land Grid Array (LGA)
• -40° to +100°C PCB temperature (See Fig. 5)
• Active filtering reduces volume and height
• Efficiency >99% at full load
• Connect in series for higher attenuation
• TÜV approved
Applications
• ATCA blades
• Telecom base stations
• IBA & distributed power
Typical Application
QPI Performance
10 Ω, 1/4 W
Figure 1 - QPI basic input bus filter circuit. Read important
note on page 3 for Layout and Circuit Considerations.
Picor Corporation • www.picorpower.com
Figure 2 - Attenuation curves showing common-mode and
differential-mode attenuation.
QPI-4L Data Sheet Rev. 3.0 Page 1 of 8