®
QPI-1L
QuietPower
™
12 Amp Active EMI Filter for 48 V DC Bus
Description
The QPI-1 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 48 Vdc bus
(36-76 Vdc). The QPI-1’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-1 supports
10 A loads. Designed for the telecom and ITE bus range,
the QPI-1 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-1 is available in a 1.0" x 1.0" x 0.2" SiP (System
in Package) with LGA mounting. QPI-1-EVAL1 kits are
available for testing the QPI-1. The evaluation board
has a mounted QPI-1 with screw terminals for quick
in-circuit testing.
Check
picorpower.com
for the QPI-1-EVAL1 evaluation
board and the QPI-AN1 Application Note.
Features
• >40 dB CM attenuation at 250 kHz
• >70 dB DM attenuation at 250 kHz
• 80 Vdc (max input)
• 12 Amp rating
• 100 Vdc surge 100 ms
• 1,500 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
• ATCA blades
• Telecom base stations
• IBA & distributed power
Typical Application
QPI Performance
RY=10
Ω,
1/4 W
Figure 1
- QPI-1 circuit on input bus.
Figure 2
- Attenuation curves showing common-mode and
differential-mode attenuation.
QPI-1L Data Sheet Rev. 2.0 Page 1 of 8
Picor Corporation • www.picorpower.com
VICOR [ VICOR CORPORATION ]
