Defining the Quality of Power Through Innovation picorpower.com Rev 2.0 6/07 33282
800-735-6200
Active EMI Input Filters (QPI Series) For 24/28 V and 48/60 V BUS applications
QPI
US AND FORIEGN PATENTS PENDING
•082 0325A
PHIL
25 mm
25 mm 4.5 mm
Up to 60 dB CM attenuation at 250 kHz
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
TÜV approved
Saves up to 50% board space vs. standard filters
Compatible with most DC-DC converters
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.
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.
QUIETPOWER™
Product Description
Features
Part Numbering
QPI+
SW
BUS+
Active
EMI Filter
QPI-
SHIELD
Hot-Swap Function
PowerGood
SHIELD
OV
SW
UVEN
BUS-
BUS+
PWRGD
QPI+
QPI-
QPI-8
Conducted EMI scans showing QPI performance.
Blue trace = no QPI; Red trace = with QPI.
Block diagram, QPI with integrated Hot-Swap
Part Number Input Nominal Current CM Attenuation DM Attenuation Hipot Integrated Package
(Z = RoHS) Voltage Range Rating @250 kHz @250 kHz Hot-Swap
QPI-3L(Z) 24/28 Vdc 10 – 40 Vdc 7 A 60 dB 80 dB 707 Vdc — full
QPI-4L(Z) 48/60 Vdc 30 – 80 Vdc 7 A 40 dB 70 dB 1,500 Vdc — full
QPI-5L(Z) 24/28 Vdc 10 – 40 Vdc 14 A 60 dB 80 dB 707 Vdc — full
QPI-6L(Z) 48/60 Vdc 30 – 80 Vdc 14 A 40 dB 80 dB 1,500 Vdc — full
QPI-7L(Z) 24/28 Vdc 18 – 38 Vdc 6 A 50 dB 80 dB 707 Vdc Yes full
QPI-8L(Z) 48/60 Vdc 32 – 76 Vdc 6 A 40 dB 70 dB 1,500 Vdc Yes full
QPI-7,8
PICMG®3.0 ATCA applications
Networking and communications
Fan tray assemblies
Telecom
Industrial
Military
Applications
QPI Evaluation Boards
Available
For more information,
go to picorpower.com
Class B limit
Defining the Quality of Power Through Innovation picorpower.com Rev 2.0 6/07 33282
800-735-6200
Part Number Input Nominal Current CM Attenuation DM Attenuation Hipot Integrated Package
(Z = RoHS) Voltage Range Rating @1 MHz @1 MHz Hot-Swap
QPI-9L(Z) 24/28 Vdc 18 – 38 Vdc 6 A 65 dB 80 dB 707 Vdc Yes full
QPI-10L(Z) 48/60 Vdc 32 – 76 Vdc 6 A 45 dB 70 dB 1,500 Vdc Yes full
QPI-11L(Z) 24/28 Vdc 5 – 50 Vdc 7 A 65 dB 80 dB 707 Vdc — half
QPI-12L(Z) 48/60 Vdc 10 – 80 Vdc 7 A 45 dB 70 dB 1,500 Vdc — half
V•I Chip Input EMI Filters (QPI Series) Optimized for V•I Chip applications
QPI-12L
US AND FORIEGN PATENTS PENDING
•087 0550A
PHIL
QPI-10L
US AND FORIEGN PATENTS PENDING
•079 0650A
PHIL
12.5 mm
25 mm
25 mm 4.5 mm
Full Size
Half Size
24/28 V and 48/60 V models
Up to 65 dB CM attenuation at 1 MHz
Up to 80 dB DM attenuation at 1 MHz
Efficiency >99%
Low profile LGA package
Integrated Hot-Swap in select models
Supports PICMG®3.0 ATCA applications
-40° to +100°C PCB temperature
TÜV approved
These QPI filters, optimized for V•I Chips, are specifically designed to
attenuate conducted common-mode (CM) and differential-mode
(DM) noise of Vicor’s V•I Chip products to comply with the
CISPR22 standard requirements for conducted noise measurements.
Designed for the telecom, industrial and military bus ranges,
the V•I Chip EMI filter supports filtering system boards to the
EN55022 Class B limits.
QUIETPOWER™
Product Description
Features
Part Numbering
QPI-12 attenuation curves Total conducted noise of P048K048T24IF & V048K120T025
with QPI-12.
PICMG®3.0 ATCA applications
Networking and communications
Fan tray assemblies
Telecom
Industrial
Military
Applications
QPI Evaluation Boards
Available
For more information,
go to picorpower.com
