Picor Corporation · picorpower.com

QPI-6

Rev 2.6, Page 1 of 13

QPI-6

QUIETPOWER



14 A Active EMI Filter SIP for 48 Vdc Bus

Description:

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.

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-6 is available as a

lidded or an open-frame SiP

(System-in-Package)

with

LGA mounting. Evaluation

boards are available to allow

for quick in-circuit testing of

the

QPI-6LZ

within

an

existing

system

design.

Features:



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%



Connect in series for higher attenuation



TÜV Certified

Applications



ATCA blades



Telecom base stations



IBA & distributed power



Network switches and routers



Optical line-cards



TD-SCMA wireless infrastructure

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.

Figure 1 - QPI-6LZ

(~1 in