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28 Volt input, 7 Amp M-Grade EMI Filter Module
Quiet-Power®
MQPI-18
M-Grade
Product Description
The MQPI-18 attenuates conducted common-mode (CM)
and dierential-mode (DM) noise for DC-DC converters
including the VI Chip MIL PRM to comply with MIL-STD-461F
EMI requirements for conducted noise measurements.
The filter operates within the full input operating range
of a 28 V MIL PRM and supports 7 A loads up to 85°C (TA)
without de-rating.
Features
•50 Vin max. input
•Compatible to most industry standard DC-DC converters
including VI Chip MIL PRM
•MIL-STD-461F compliant[a] CE101, CE102, CS101, CS106,
CS114, CS115, and CS116
•100 Vdc surge, 100 ms
•1,500 Vdc hipot hold-off to shield plane
•7 A rating
•12.9 x 25.3 x 5.0 mm, lidded SiP (System-in-Package)
•12.4 x 24.9 x 4.2 mm, open-frame
•-55° to +125°C PCB temperature (see Figure 4)
•Efficiency >99%
•Pb solder construction
Applications
•Rugged Environment
•Displays
•Wireless Communications
Assembly Process Compatibility
•Designed for Pb solder SMT assembly
•Compatible with typical aqueous cleaning processes
(MQPI-18LP-01, open-frame only)
•Compatible with most conformal coating compounds
(MQPI-18LP-01, open-frame only, after reflow)
PRM
+IN
–IN
+OUT
–OUT
+BUS
–BUS
+QPI
–QPI
VTM
+IN
–IN
+OUT
–OUT
Shield
CB1 +
CIN
+
L
BUS+
BUS–
Chassis/Shield CY1 CY2 CY3 CY4
Shield Plane
Optional Chassis
Connection
LOAD
Typical Application
MQPI-18LP (~1/2 in2area)
[a] When combined with MP028 PRMs and MV036 VTMs.
[b] CB1 capacitor, referenced in all schematics, is a 47 uF electrolytic; United Chemi-Con EMVE101ARA470MKE0S or equivalent.
CY1 to CY4, referenced in all schematics, are 4.7 nF hi-voltage safety capacitors; Vishay VY1472M63Y5UQ63V0 or equivalent.
Figure 1 — Typical MQPI-18 application schematic with Vicor’s MP028 PRM and MV036 VTM modules. [b]
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MQPI-18
Order Information
Part Number Description
MQPI-18LP MQPI-18 LGA package
MQPI-18LP-01 MQPI-18 LGA package, open-frame package
Also Available
MQPI-18-CB1 A MQPI-18LP mounted on a carrier board that can be paired with PRM/VTM and Cool-Power®evaluation boards available from Vicor.
Name Rating
Input voltage, BUS+ to BUS-, continuous -50 to 50 Vdc
Input voltage, BUS+ to BUS-, 100 ms transient -100 to 100 Vdc
BUS+/ BUS- to Shield pads, hipot -750 to 750 Vdc
Input to output current, continuous @ 25°C TA7 Adc
Power dissipation, @ 85°C TA, 7 A [c] 1.85 W
Operating temperature - TA-55 to 125°C
Thermal resistance[c] - RθJ-A, using PCB layout in Figure 12 30°C/W
Thermal resistance[c] - RθJ-PCB 18°C/W
Storage temperature, JEDEC Standard J-STD-033B -55 to 125°C
Reflow temperature, 20 s exposure 245°C
ESD, Human Body Model (HBM) -2000 to 2000 V
Electrical Characteristics
Parameter limits apply over the operating temp. range, unless otherwise noted.
Absolute Maximum Ratings
Exceeding these parameters may result in permanent damage to the product.
[c] See Figure 4 for the current de-rating curve.
Parameter Symbol Conditions Min Typ Max Unit
Input range BUS+ to BUS- Measured at 7 A, 85°C ambient temperature [c] 50 Vdc
Voltage drop BUS+ to QPI+ Measured at 7 A, 85°C ambient temperature [c]) 130 mVdc
Voltage drop BUS- to QPI- Measured at 7 A, 85°C ambient temperature [c] 130 mVdc
Common-mode attenuation VBUS = 28 V, frequency = 1.0 MHz, line impedance = 50 Ω45 dB
Differential-mode attenuation VBUS = 28 V, frequency = 1.0 MHz, line impedance = 50 Ω75 dB
Input bias current at 50 V Input current from BUS+ to BUS- 10 uA
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MQPI-18
Pin Name Name Description
8, 9 BUS+ Positive bus potential
1, 10 BUS- Negative bus potential
6, 7 QPI+ Positive input to the converter
4, 5 QPI- Negative input to the converter
2, 3 Shield Shield connects to the system chassis or to a safety ground
Pad Descriptions
BUS+
BUS+
BUS–
BUS– QPI–
QPI–
QPI+
QPI+
Shield Shield
34
5
6
7
8
9
2
1
10
LGA Pattern (Top View)
MIL-STD 461F Test Results
CS101 Conducted susceptibility, power Leads Passed
CS106 Conducted susceptibility, transients, power leads Passed
CS114 Bulk cable injection, radio frequency Passed, 100% load (Figure 4)
CS114 Bulk cable injection, radio frequency Passed, 78% load (Figure 5)
CS115 Bulk cable injection, radio frequency Passed
CS116 Damped sinusoid transients Passed
CS116 Damped sinusoid transients Passed
Applications Information
The MQPI-18 was designed specifically to work with Vicor’s MIL PRM (MP028) and VTM (MV036) series of VI Chip®Factorized Power Architecture™ (FPA™)
converters to achieve compliance with the MIL-STD 461F standard.
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MQPI-18
30 Hz
10 kHz
Trd
CP9207-1
SGL
1MA
Unit
dB A
ResBW
Meas T
20 ms
Det
MA
Att
10 dB
INPUT 2
21.Oct 2009 16:33
100 Hz
1 kHz
10 kHz
10
20
30
40
50
60
70
80
90
100
110
0
120
CE101-42
Date: 21.OCT.2009 16:33:12
Figure 2 — CE101 EMI plots of the MP028F036M12AL and MV036F120M010, filtered with the MQPI-18LP, + (RED) and –(BLK) leads
30 Hz
10 kHz
Trd
CP9207-1
SGL
1MA
Unit
dB A
21.Oct 2009 16:50
ResBW
100 Hz
Meas T
20 ms
Det
MA
Att
10 dB
INPUT 2
100 Hz
1 kHz
10 kHz
10
20
30
40
50
60
70
80
90
100
110
0
120
CE101-42
Date: 21.OCT.2009 16:50:50
CE101 EMI Plots: 108 Watt Load
SGL
1MA
10 kHz
10 MHz
Unit
dB V
Trd
CE102RED
20.Oct 2009 14:22
ResBW
10 kHz
Meas T
20 ms
Det
MA
Att
10 dB
INPUT 2
100 kHz
1 MHz
10 MHz
10
20
30
40
50
60
70
80
90
100
110
0
120
CE10228
Date: 20.OCT.2009 14:22:54
Figure 3 — CE102 EMI plots of the MP028F036M12AL and MV036F120M010, filtered with the MQPI-18LP, + (RED) and –(BLK) leads
SGL
1MA
10 kHz
10 MHz
Unit
dB V
Trd
CE102BLK
20.Oct 2009 14:30
ResBW
10 kHz
Meas T
20 ms
Det
MA
Att
10 dB
INPUT 2
100 kHz
1 MHz
10 MHz
10
20
30
40
50
60
70
80
90
100
110
0
120
CE10228
Date: 20.OCT.2009 14:30:27
CE102 EMI Plots: 108 Watt Load
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MQPI-18
Load Current (A)
Ambient Temperature (°C)MQPI-18LP-01 MQPI-18LP
limited
by
TPCBMAX
=125°C
limited
by
TJMAX
=140°C
8.00
7.00
6.00
5.00
4.00
3.00
2.00
1.00
0.00
-40 -15 10 35 60 85 110
Figure 4 — Current de-rating over ambient temperature range
Current De-Rating
MQPI-18 Differential MQPI-18 CommonFrequency (MHz)
Attenuation (dB)
90
80
70
60
50
40
30
20
10
0
0.1 110
Figure 5 — Attenuation curves into a 50 Ω line impedance, bias from a 48 V bus
MQPI-18 Insertion Loss Measurements
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MQPI-18
BUS IN
SIGChassis
LISN
BUS IN
SIGChassis
LISN
Shield
BUS+ QPI+
BUS- QPI-
INA
INB
SIG
50
CSIG
LO A D
IPROBE
47uF
VBUS 0
IPROBE
Figure 6 — Test set-up to measure differential-mode EMI currents in Figure 4
MQPI Insertion Loss Test Circuits
BUS IN
SIGC hassis
LISN
BUS IN
SIGC hassis
LISN
Shield
BUS+ QPI+
BUS- QPI-
INA
INB
SIG
50
CSIG
LO A D IPROBE
IPROBE
47uF
VBUS
0
Figure 7 — Test set-up to measure common-mode EMI currents in Figure 4
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MQPI-18
Mechanical Package Drawings
0.508" [12.903 mm]
0.996" [25.298 mm] 0.196" [4.978 mm]
0.006" [0.15mm] max.0.006" [0.15mm] max.
MQPI-18LP
U.S. and Foreign Patents/Patents Pending
Lot # Date Code
Pin 1 indicator
Figure 8 — Bottom view of open-frame (OF) and lidded (LID) products.
18LP-01
0.979" [24.867 mm] 0.164" [4.166 mm]
0.330 [8.382 mm]
0.006" [0.15mm] max.0.006" [0.15mm] max.0.006" [0.15mm] max.
0.489" [12.421 mm]
Figure 9 — Recommended receptor and stencil patterns.
Datum Units MQPI-18LP MQPI-18LP-01 Notes
FITS failure/billion hrs. 16 16 FITS based on the BellCore Standard TR-332
MTBF million hrs. 62.5 62.5 MTBFs based on the BellCore Standard TR-332
Weight grams 2.4 2.075
MSL 3 3
Peak Reflow Temperature °C/20 seconds 245 245 IPC/JEDEC J-STD-020D
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MQPI-18
Pad and Stencil Definitions
Figure 10 — Bottom view of open-frame (OF) and lidded (LID) products. (All dimensions are in inches)
Figure 11 — Recommended receptor and stencil patterns. (All dimensions are in inches)
Stencil definition is based on a 6 mil stencil thickness, 80% of LGA pad area coverage. LGA package dimensions are for both the open-frame and lidded
versions of the MQPI-18.
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MQPI-18
MQPI-18 PCB Layout Recommendations
Figure 12 — 3D view of paralleling planes underneath the MQPI-18
The filtering performance of the MQPI-18 is sensitive to capacitive
coupling between its input and output pins. Parasitic plane
capacitance must be kept below one pico-Farad between inputs and
outputs using the layout shown above and the recommendations
described below to achieve maximum conducted EMI performance.
To avoid capacitive coupling between input and output pins, there
should not be any planes or large traces that run under both input
and output pins, such as a ground plane or power plane. For
example, if there are two signal planes or large traces where one
trace runs under the input pins, and the other under the output pins,
and both planes overlap in another area, they will cause capacitive
coupling between input and output pins. Also, planes that run under
both input and outputs pins, but do not cross, can cause capacitive
coupling if they are capacitively by-passed together. Figure 11 shows
the recommended PCB layout on a two-layer board. Here, the top
layer planes are duplicated on the bottom layer so that there can be
no overlapping of input and output planes. This method can be used
for boards of greater layer count.
Post Solder Cleaning
Picor’s MQPI-18LP SiPs are not hermetically sealed and must not be
exposed to liquid, including but not limited to cleaning solvents,
aqueous washing solutions or pressurized sprays. When soldering, it
is recommended that no-clean flux solder be used, as this will ensure
that potentially corrosive mobile ions will not remain on, around, or
under the module following the soldering process. For applications
where the end product must be cleaned in a liquid solvent, Picor
recommends using the MQPI-18LP-01, open-frame version of the
EMI filter.
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MQPI-18
Vicor’s comprehensive line of power solutions includes high density AC-DC and DC-DC modules and
accessory components, fully configurable AC-DC and DC-DC power supplies, and complete custom
power systems.
Information furnished by Vicor is believed to be accurate and reliable. However, no responsibility is assumed by Vicor for its use. Vicor makes no
representations or warranties with respect to the accuracy or completeness of the contents of this publication. Vicor reserves the right to make
changes to any products, specifications, and product descriptions at any time without notice. Information published by Vicor has been checked and
is believed to be accurate at the time it was printed; however, Vicor assumes no responsibility for inaccuracies. Testing and other quality controls are
used to the extent Vicor deems necessary to support Vicor’s product warranty. Except where mandated by government requirements, testing of all
parameters of each product is not necessarily performed.
Specifications are subject to change without notice.
Vicor’s Standard Terms and Conditions
All sales are subject to Vicor’s Standard Terms and Conditions of Sale, which are available on Vicor’s website or upon request.
Product Warranty
In Vicor’s standard terms and conditions of sale, Vicor warrants that its products are free from non-conformity to its Standard Specifications (the
“Express Limited Warranty”). This warranty is extended only to the original Buyer for the period expiring two (2) years after the date of shipment
and is not transferable.
UNLESS OTHERWISE EXPRESSLY STATED IN A WRITTEN SALES AGREEMENT SIGNED BY A DULY AUTHORIZED VICOR SIGNATORY, VICOR DISCLAIMS
ALL REPRESENTATIONS, LIABILITIES, AND WARRANTIES OF ANY KIND (WHETHER ARISING BY IMPLICATION OR BY OPERATION OF LAW) WITH
RESPECT TO THE PRODUCTS, INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES OR REPRESENTATIONS AS TO MERCHANTABILITY, FITNESS FOR
PARTICULAR PURPOSE, INFRINGEMENT OF ANY PATENT, COPYRIGHT, OR OTHER INTELLECTUAL PROPERTY RIGHT, OR ANY OTHER MATTER.
This warranty does not extend to products subjected to misuse, accident, or improper application, maintenance, or storage. Vicor shall not be liable
for collateral or consequential damage. Vicor disclaims any and all liability arising out of the application or use of any product or circuit and assumes
no liability for applications assistance or buyer product design. Buyers are responsible for their products and applications using Vicor products and
components. Prior to using or distributing any products that include Vicor components, buyers should provide adequate design, testing and
operating safeguards.
Vicor will repair or replace defective products in accordance with its own best judgment. For service under this warranty, the buyer must contact
Vicor to obtain a Return Material Authorization (RMA) number and shipping instructions. Products returned without prior authorization will be
returned to the buyer. The buyer will pay all charges incurred in returning the product to the factory. Vicor will pay all reshipment charges if the
product was defective within the terms of this warranty.
Life Support Policy
VICOR’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS
PRIOR WRITTEN APPROVAL OF THE CHIEF EXECUTIVE OFFICER AND GENERAL COUNSEL OF VICOR CORPORATION. As used herein, life support
devices or systems are devices which (a) are intended for surgical implant into the body, or (b) support or sustain life and whose failure to perform
when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in a significant injury to the
user. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the
failure of the life support device or system or to affect its safety or effectiveness. Per Vicor Terms and Conditions of Sale, the user of Vicor products
and components in life support applications assumes all risks of such use and indemnifies Vicor against all liability and damages.
Intellectual Property Notice
Vicor and its subsidiaries own Intellectual Property (including issued U.S. and Foreign Patents and pending patent applications) relating to the
products described in this data sheet. No license, whether express, implied, or arising by estoppel or otherwise, to any intellectual property rights is
granted by this document. Interested parties should contact Vicor's Intellectual Property Department.
Vicor Corporation
25 Frontage Road
Andover, MA 01810 USA
Picor Corporation
51 Industrial Drive
North Smithfield, RI 02896 USA
email
Customer Service: custserv@vicorpower.com
Technical Support: apps@vicorpower.com
The products described on this data sheet are protected by the following U.S. Patents Number:
6,898,092