QPI-21 Datasheet, PDF (1/15 Pages) Vicor Corporation – Active EMI Input Module for 48 Vdc Bus

Active EMI Input Module for 48 Vdc Bus
Quiet-Power^®
QPI-21
S
C NRTL US
Product Description
The QPI-21 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 in 48 Vdc bus (36 – 76 Vdc) systems, with
100 Vdc surge capability. The QPI-21’s 14 A rating supports
multiple DC-DC converter loads up to an ambient
temperature of 65°C without de-rating. Designed for the
telecom and ITE bus range, the QPI-21 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 component size and therefore reduces the overall
package size. The Picor QPI-21 smaller size saves valuable
board real estate and the reduced height enhances airflow.
The QPI-21 is available as a lidded or an open-frame SiP
(System-in-Package) module with LGA mounting. Evaluation
boards are available to allow for quick in-circuit testing of the
QPI-21LZ within an existing system design.
Features
• 45 dB CM attenuation at 250 KHz (50 Ω)
• 80 dB DM attenuation at 250 KHz (50 Ω)
• 80 Vdc (max input)
• 100 Vdc surge 100 ms
• 1,500 Vdc hipot hold off to shield plane
• 14 A rating
• 25.3 x 25.3 x 5.0 mm Lidded SiP (System-in-Package)
• 24.9 x 24.9 x 4.4 mm Open-frame SiP
• Low profile LGA package
• -40° to +125°C Ambient temperature (see Figure 14)
• Efficiency >99%
• Connect in series for higher attenuation
• Pads for additional X filtering capacitance
• cTÜVus approved to UL/CSA 60950-1 and EN 60950-1
• CE marked to the LVD and RoHS Recast Directive
as applicable
QuietPower^®
QPI-21LZ
U.S. PATENT NO. 6,898,092
Figure 1 — QPI-21LZ (~1 in² area)
Typical Applications
Applications
• ATCA blades
• Telecom base stations
• IBA & distributed power
• Network switches and routers
• Optical line-cards
• TD-SCMA wireless infrastructure
CX1
BUS+
CB1
BUS-
Chassis/Shield
XY+
BUS+
XY-
QPI+
BUS-
QPI-
Shield
CY1
IN+
CIN
PC
PR
OUT+
SENSE+
SC
SENSE-
IN-
CY2
OUT-
CY3
Shield Plane
LOAD
CY4
Figure 2 — Typical QPI-21 circuit with a Vicor brick converter. Optional X (CX1) filter capacitor shown.^[b]
[b] _{CB1, CX1 capacitors, referenced in all schematics, are a 47uF electrolytic; United Chemi-Con EMVE101ARA470MKE0S or equivalent.}
Quiet-Power®
Page 1 of 15
Rev 1.5
08/2015
vicorpower.com
800 927.9474