Picor Corporation • www.picorpower.com

QPI-2L Data Sheet Rev. 2.0 Page 1 of 8

Features

• >55 dB CM attenuation at 250 kHz

• >70 dB DM attenuation at 250 kHz

• 40 Vdc (max input)

• 12 Amp rating

• 100 Vdc surge 100 ms

• 707 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

•Industrial bus supplies

• Telecom base stations

• COTS systems

Typical Application

QPI Performance

RY=10

Ω, 1/4 W

Figure 1 - QPI-2 circuit on input bus.

Figure 2 - Attenuation curves showing common-mode and

differential-mode attenuation.

Description

The QPI-2 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 24 Vdc bus

(10-40 Vdc). The QPI-2’s 12 A rating supports multiple

DC-DC converter loads up to a PCB temperature of

60°C. At a 100°C PCB temperature the QPI-2 supports

10 A loads. Designed for a nominal 24 V bus, the QPI-2

supports industrial and COTS applications.

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-2 is available in a 1.0" x 1.0" x 0.2" SiP (System

in Package) with LGA mounting. QPI-2-EVAL1 kits are

available for testing the QPI-2. The evaluation board

has a mounted QPI-2 with screw terminals for quick

in-circuit testing.

Check picorpower.com for the QPI-2-EVAL1 evaluation

board and the QPI-AN1 Application Note.

QPI-2L

QuietPower

™

12 Amp Active EMI Filter for 24 V DC Bus

®