QPI-6
QUIETPOWER
14 A Active EMI Filter SIP for 48 Vdc Bus
Description:
Features:
The QPI-6 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 48 Vdc bus (36 – 76 Vdc) systems, with
100 Vdc surge capability. The QPI-6’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-6 supports the PICMG®
3.0 specification for filtering system boards to the EN55022
Class B limits.
40 dB CM attenuation at 250 KHz (50Ω)
80 dB DM attenuation at 250 KHz (50Ω)
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 12)
Efficiency >99%
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.
Connect in series for higher attenuation
TÜV Certified
Applications
The QPI-6 is available as a
lidded or an open-frame SiP
ATCA blades
(System-in-Package)
with
Telecom base stations
IBA & distributed power
Network switches and routers
Optical line-cards
LGA mounting. Evaluation
boards are available to allow
for quick in-circuit testing of
the QPI-6LZ within an
Figure 1 - QPI-6LZ
TD-SCMA wireless infrastructure
(~1 in2 area)
existing
system
design.
Typical Application:
Figure 2 – Typical QPI-6 application schematic with a Vicor brick converter. (1)
Note 1: CB1 capacitor, referenced in all schematics, is a 47uF electrolytic; United Chemi-Con EMVE101ARA470MKE0S or equivalent.
CY1 to CY4, referenced in all schematics, are 4.7nF hi-voltage safety capacitors; Vishay VY1472M63Y5UQ63V0 or equivalent.
CIN is the manufacturer’s recommended value for input capacitor.
Picor Corporation · picorpower.com
QPI-6
Rev 2.6, Page 1 of 13