QPI-11-CB1

Quiet-Power® QPI-11 7 A VI Chip EMI Filter SiP ® Product Description Features • >60 dB CM attenuation at 1 MHz (50 Ω) The QPI-11 EMI filter is specifically designed to attenuate conducted common-mode (CM) and differential-mode (DM) noise of Vicor’s VI Chip PRM/VTM factorized power products to comply with the CISPR22 standard requirements for conducted noise measurements. The filter is designed to operate up to 50 Vdc, 100 Vdc surge, and supports 7 A loads up to 85°C (TA) without de-rating. Designed for the industrial bus range, the VI Chip EMI filter supports the PICMG® 3.0 specification for filtering system boards to the EN55022 Class B limits. • >70 dB DM attenuation at 1 MHz (50 Ω) • 50 Vdc (max input) • 100 Vdc surge 100 ms • 750 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 • Low profile LGA package • -40° to +125°C PCB temperature (see Figure 6) • Efficiency >99% • TÜV Certified Applications • VI Chip input EMI filter Figure 1 — QPI-11LZ (~1/2 in2 area) Typical Applications BUS+ BUS+ CB1 CIN QPI+ + IN+ OUT+ L IN+ OUT+ LOAD + VTM PRM BUSBUS- Shield QPI- IN- CY1 OUT- IN- Optional Chassis Connection OUT- CY2 CY3 CY4 Shield Plane Chassis/Shield Figure 2 — Typical QPI-11 application schematic with Vicor’s PRM and VTM modules in a baseplate configuration. [a] CY1 CY2 BUS+ BUS+ CB1 QPI+ IN+ CIN + OUT+ L IN+ LOAD VTM PRM BUSBUS- Shield OUT+ + QPI- IN- OUT- IN- OUT- Optional Chassis Connection CY3 Chassis/Shield Figure 3 — Typical QPI-11 application schematic with Vicor’s PRM and VTM modules in an open-frame configuration. [a] [a] 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. Quiet-Power® Rev 1.9 vicorpower.com Page 1 of 12 7/2014 800 927.9474 QPI-11 Order Information Part Number Description QPI-11LZ[b] QPI-11LZ-01 QPI-11 LGA package, RoHS compliant QPI-11 LGA package, RoHS compliant, open-frame package Evaluation Board Also Available QPI-11-CB1 A QPI-11LZ mounted on a carrier board that can hold either a stand-alone BCM or a paired PRM/VTM eval board available from Vicor. Absolute Maximum Ratings Exceeding these parameters may result in permanent damage to the product. 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 (TA ) 7 Adc Power dissipation, @ 85°C (TA ), 7 A [c] 1.85 W Operating temperature - TA -40 to 125 °C Thermal resistance[c] - RθJ-A, using PCB layout in Figure 20 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. Parameter BUS+ to BUS- input range BUS+ to QPI+ voltage drop BUS- to QPI- voltage drop Common-mode attenuation Differential-mode attenuation Input bias current at 50 V [b] [c] Conditions Measured at 7 A, 85°C ambient temperature [c] Measured at 7 A, 85°C ambient temperature [c] Measured at 7 A, 85°C ambient temperature [c] VBUS = 24 V, frequency = 1.0 MHz, line impedance = 50 Ω VBUS = 24 V, frequency = 1.0 MHz, line impedance = 50 Ω Input current from BUS+ to BUS- QPI-11LZ is a non-hermetically sealed package. Please read the “Post Solder Cleaning” section on Page 11. See Figure 6 for the current de-rating curve. Quiet-Power® Rev 1.9 vicorpower.com Page 2 of 12 7/2014 800 927.9474 Min Typ Max 50 130 130 60 70 10 Unit Vdc mVdc mVdc dB dB uA QPI-11 Pad Descriptions 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 BUS+ 9 BUS– 10 BUS+ QPI+ 8 7 1 2 3 4 BUS– Shield Shield QPI– LGA Pattern (Top View) Quiet-Power® Rev 1.9 vicorpower.com Page 3 of 12 7/2014 800 927.9474 6 QPI+ 5 QPI– QPI-11 Applications Information EMI Sources Many of the components in today’s power conversion modules are sources of high-frequency EMI noise generation. Diodes, high-frequency switching devices, transformers and inductors, and circuit layouts passing high dv/dt or di/dt signals are all potential sources of EMI. EMI is propagated either by radiated or conductive means. Radiated EMI can be sourced from these components as well as by circuit loops that act like antennas and broadcast the noise signals to neighboring circuit paths. This also means that these loops can act as receivers of a broadcasted signal. This radiated EMI noise can be reduced by proper circuit layout and by shielding potential sources of EMI transmission. The differential-mode EMI is typically larger in magnitude than commonmode, since common-mode is created by the physical imbalances in the differential loop path. Reducing differential EMI will cause a reduction in common-mode EMI. EMI Filtering The basic premise of filtering EMI is to insert a high-impedance, at the EMI’s base frequency, in both the differential and common-mode paths as it returns to the power source. There are two basic forms of conducted EMI that typically need to be filtered; namely common-mode (CM) and differential-mode (DM) EMI. Differential-mode resides in the normal power loop of a power source and its load; where the signal travels from the source to the load and then returns to the source. Common-mode is a signal that travels through both leads of the source and is returned to earth via parasitic pathways, either capacitively or inductively coupled. Passive filters use common-mode chokes and “Y” capacitors to filter out common-mode EMI. These chokes are designed to present a highimpedance at the EMI frequency in series with the return path, and a low impedance path to the earth signal via the “Y” caps. This network will force the EMI signals to re-circulate within a confined area and not to propagate to the outside world. Often two common-mode networks are required to filter EMI within the frequency span required to pass the EN55022 Class B limits. Figure 10 to Figure 13 are the resulting EMI plots of the total noise, both common and differential mode, of Vicor’s PRM/VTM evaluation modules, under various loads, after filtering by the QPI-11LZ. The red and blue traces represent the positive and negative branches of total noise, as measured using an industry standard LISN setup, shown in Figures 4 and 5. The PRM® and VTM® evaluation boards are mounted to a Picor® QPI-11-CB1 board for testing. The other component of the passive filter is the differential LC network. Again, the inductor is chosen such that it will present a high-impedance in the differential EMI loop at the EMI’s base frequency. The differential capacitor will then shunt the EMI back to its source. The QPI-11 was specifically designed to work with higher switching frequency converters like Vicor’s VI Chip® products; PRM and VTM modules; as well as their newer VI Brick™ product series. Figure 4 — Open-frame EMI test setup using the QPI-11-CB1 carrier board with VI Chip evaluation boards. Quiet-Power® Rev 1.9 vicorpower.com Page 4 of 12 7/2014 800 927.9474 QPI-11 Figure 5 — Baseplate EMI test setup using the QPI-11-CB1 carrier board with VI Chip evaluation boards. EMI Management The more effectively EMI is managed at the source, namely the power converter, the less EMI attenuation the filter will have to do. The addition of “Y” capacitors to the input and output power nodes of the converter will help to limit the amount of EMI that tries to propagate to the input source. There are two basic topologies for the connection of the recirculating “Y” capacitors. In Figure 4 the open-frame topology is shown in Picor’s EMI test setup. The “Y” capacitors (CY1 to CY4) recirculate the EMI signals between the positive input and output, and the negative input and output of the power conversion stage. Figure 5 shows the baseplate topology of recirculating “Y” caps. Here, CY5 to CY10 are connected to each power node of the PRM and VTM, and then are commoned together on a copper shield plane created under the converter. The addition of the copper shield plane helps in the containment of the radiated EMI, converting it back to conducted EMI and shunting it back to its source. Both of these topologies work well with the PRM/VTM combination shown above in attenuating noise levels well below Class B EMI limits. Current De-Rating — Mounted to QPI-11-CB1 Evaluation Board Figure 6 — Current de-rating over ambient temperature range. Quiet-Power® Rev 1.9 vicorpower.com Page 5 of 12 7/2014 800 927.9474 QPI-11 QPI Insertion Loss Measurements [ ] I Equation 1. — Insertion Loss = 20 * log * IINA INB Figure 7 — Attenuation curves into a 50 Ω line impedance, bias from a 24 V bus. QPI Insertion Loss Test Circuits IP RO BE IN BU S LISN V BU S C hassis 47uF BUS+ LO A D SIG BUS- Shield QPI- C S IG INA INB SIG 50 Ω IN BU S LISN C hassis QPI+ IP RO BE SIG Figure 8 — Test set up to measure differential-mode EMI currents in Figure 7. BU S IN LISN V BU S C hassis BU S 47uF BUS+ QPI+ BUS- QPI- SIG Shield INA C S IG INB IN SIG LISN C hassis IP RO BE LO A D 50 Ω SIG Figure 9 — Test set up to measure common-mode EMI currents in Figure 7. Quiet-Power® Rev 1.9 vicorpower.com Page 6 of 12 7/2014 800 927.9474 IP RO BE QPI-11 Attenuation Plots — QPI-11 with PRM P024F048T12AL-CB and various VTM modules, connected in baseplate configuration, as shown in Figure 2. Figure 10 — VTM V048F030T070-CB with 111 W load. Figure 11 — VTM V048F120T025-CB with 90 W load. Figure 12 — VTM V048F240T012-CB with 86 W output load. Figure 13 — VTM V048F480T006-CB with 76 W load. Quiet-Power® Rev 1.9 vicorpower.com Page 7 of 12 7/2014 800 927.9474 QPI-11 Converter Output Grounding — Recommended configuration CY1 4.7nF BUS+ BUS+ CB1 QPI+ IN+ CIN + L IN+ Shield QPI- OUT+ LOAD VTM PRM BUS- 4.7nF + 47uF BUS- OUT+ CY2 IN- OUT- IN- OUT- Optional Chassis Connection CY3 CY2 4.7nF Chassis/Shield Figure 14 — PRM/VTM converter in baseplate configuration with output connected to chassis/earth. When using the QPI-11 with a Vicor PRM/VTM, in a power system that requires the converter’s output to be connected to chassis/earth, Picor recommends using the open-frame configuration of “Y” capacitors, shown in Figure 14, to recirculate EMI currents. A baseplate configuration could also be used with a slight decrease in EMI attenuation, but with peaks well below Class B limits. The plot in Figure 15 is of a P024F048T12AL-CB and a V048F240T012-CB, an 86 W load with the output ground connected to the chassis. When using the open-frame configuration of “Y” caps, the EMI shield plane is not used by the “Y” capacitors for re-circulating the EMI currents. The QPI-11 is not designed to be used in parallel with another QPI-11 to achieve a higher current rating, but it can be used multiple times within a system design. The red and blue traces in Figure 10 through Figure 13, and Figure 15, are the measurements of total EMI, in both the positive and negative branches. The test setups shown in Figure 4 and Figure 5 are representative of measuring the positive branch of the total EMI for the unit under test. Figure 15 — Total noise plot of PRM/VTM with its output return connected to chassis, as shown in Figure 14. Quiet-Power® Rev 1.9 vicorpower.com Page 8 of 12 7/2014 800 927.9474 QPI-11 Mechanical Package Drawings 0.006" [0.15mm] max. 0.006" [0.15mm] max. QPI-11LZ 0.508" [12.903 mm] U.S. and Foreign Patents/Patents Pending Lot # Date Code Pin 1 indicator 0.996" [25.298 mm] 0.196" [4.978 mm] Figure 16 — Lidded package dimensions, tolerance of ±0.004” 0.006" [0.15mm] max. 0.489" [12.421 mm] 0.006" [0.15mm] max. 11LZ-01 0.330 [8.382 mm] Pin 1 0.979" [24.867 mm] 0.164" [4.166 mm] Figure 17 — Open open-frame package dimensions, tolerance of ±0.004”. Pick and place from label center. Datum Units QPI-11LZP QPI-12LZ-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 3 3 245 245 MSL Peak Reflow Temperature °C/20 seconds Quiet-Power® Rev 1.9 vicorpower.com Page 9 of 12 7/2014 800 927.9474 IPC/JEDEC J-STD-020D QPI-11 Pad and Stencil Definitions Figure 18 — Bottom view of open-frame (OF) and lidded (LID) products. (All dimensions are in inches) Figure 19 — 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 QPI-11. Quiet-Power® Rev 1.9 vicorpower.com Page 10 of 12 7/2014 800 927.9474 QPI-11 QPI-11 PCB Layout Recommendations Figure 20 — 3D view of paralleling planes underneath the QPI-11. The filtering performance of the QPI-11 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. 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. 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 20 shows Post Solder Cleaning Picor’s LZ version QuitePower 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 QPI-11LZ-01, open-frame version of the EMI filter. Quiet-Power® Rev 1.9 vicorpower.com Page 11 of 12 7/2014 800 927.9474 QPI-11 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. 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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. The products described on this data sheet are protected by the following U.S. Patents Number: 6,898,092 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 Quiet-Power® Rev 1.9 vicorpower.com Page 12 of 12 7/2014 800 927.9474