Active EMI Input Filters (QPI Series) For 24/28 V and 48/60 V BUS applications
Features
ꢀUp to 60 dB CM attenuation at 250 kHz
25 mm
4.5 mm
ꢀUp to 80 dB DM attenuation at 250 kHz
ꢀEfficiency: >99% at full load
ꢀHigh density, low profile LGA package
ꢀIntegrated Hot-Swap in select models
ꢀ-40° to +100°C PCB temperature
25 mm
QPI
US AND FORIEGN PATENTS PENDING
•082
PHIL 0325A
ꢀTÜV approved
ꢀSaves up to 50% board space vs. standard filters
ꢀCompatible with most DC-DC converters
QUIETPOWER™
Applications
Product Description
The QPI family of active EMI filters provides conducted
common-mode (CM) and differential-mode (DM) attenuation
from 150 kHz to 30 MHz (CISPR22 range). The proprietary
active filtering circuit provides superior attenuation at
low frequencies intended to support EN Class B limits,
including PICMG® 3.0 for ATCA boards.
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
PICMG® 3.0 ATCA applications
Networking and communications
Fan tray assemblies
Telecom
QPI Evaluation Boards
Industrial
Military
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.
Available
For more information,
go to picorpower.com
Part Numbering
Part Number
(Z = RoHS)
Input
Voltage
Nominal
Range
Current
Rating
CM Attenuation DM Attenuation
Hipot
Integrated
Hot-Swap
Package
@250 kHz
@250 kHz
QPI-3L(Z)
QPI-4L(Z)
QPI-5L(Z)
QPI-6L(Z)
QPI-7L(Z)
QPI-8L(Z)
24/28 Vdc
48/60 Vdc
24/28 Vdc
48/60 Vdc
24/28 Vdc
48/60 Vdc
10 – 40 Vdc
30 – 80 Vdc
10 – 40 Vdc
30 – 80 Vdc
18 – 38 Vdc
32 – 76 Vdc
7 A
7 A
60 dB
80 dB
707 Vdc
1,500 Vdc
707 Vdc
—
—
full
full
full
full
full
full
40 dB
70 dB
14 A
14 A
6 A
60 dB
80 dB
—
40 dB
80 dB
1,500 Vdc
707 Vdc
—
50 dB
80 dB
Yes
Yes
6 A
40 dB
70 dB
1,500 Vdc
PWRGD
PowerGood
OV
UVEN
QPI-7,8
QPI-8
BUS+
QPI+
QPI+
QPI-
BUS+
Active
EMI Filter
Class B limit
Hot-Swap Function
SW
QPI-
BUS-
SW
SHIELD
Conducted EMI scans showing QPI performance.
Blue trace = no QPI; Red trace = with QPI.
Block diagram, QPI with integrated Hot-Swap
Defining the Quality of Power Through Innovation
picorpower.com
800-735-6200
Rev 2.0 6/07 33282