What is X2Y and Why Would Knowles Uses It to Manufactures High-performance MLCCs?
X2Y® technology, which was originally developed by X2Y Attenuators, LLC, is based on a proprietary electrode arrangement embedded in passive components that can be manufactured using a variety of dielectrics. Using this innovative technology, Knowles Precision Devices manufactures high-performance multi-layer ceramic capacitors (MLCCs) that we then use to create a variety of off-the-shelf and custom bypass and noise decoupling capacitors and electromagnetic interference (EMI) filters. Let’s look at how building these components with X2Y is different than using a traditional ceramic MLCC and the resulting benefits.
Using X2Y for Bypass, Decoupling, and EMI Filtering Components
While a traditional bypass capacitor is designed to have stacked opposing electrode layers inside, a bypass capacitor constructed with X2Y incorporates a third set of shield electrode layers. This design effectively surrounds each existing electrode within the stack of the two-terminal capacitor, creating a three-node capacitive circuit as shown in Figure 1. With this design, there are two additional external side terminations, resulting in a four-terminal device.
Figure 1. A comparison of the construction of a traditional multi-layer bypass capacitor (left) versus one built using X2Y. Source.
When using X2Y for bypassing or decoupling capacitors, you can achieve ultra-low inductance that provides broadband high-frequency bypassing, which increases circuit performance. Additionally, since this construction requires fewer passive components, system costs are also reduced.
Looking specifically at EMI filters, it’s important to note that filters using an X2Y design are manufactured in the same way as a conventional MLCC but have a special internal architecture that results in ultra-low equivalent series inductance (ESL) through opposing current flows in adjacent parallel plates. These EMI filters are not feedthrough devices but act as bypass filters, which means they are not current limited since the only signal passing through the chip is the filtered noise to the ground. These filters are ideal for twin-line applications such as motors and amplifier inputs, or twisted pair (balanced line) applications where they are fitted between the lines with the center terminal taken to the ground.
Additionally, using X2Y for EMI filtering does not add DC resistance, and since two capacitors can be used in a single package, issues with aging, voltage, and temperature variations are eliminated. This means EMI filters constructed with X2Y can offer a dramatic reduction in conducted and radiated noise to meet electromagnetic compatibility requirements.
Comparing Conventional MLCC Configurations to an X2Y Design
To illustrate some of the benefits described above, let’s look at an amplifier decoupling test performed by X2Y Attenuators, LLC. In the test configurations shown in Figure 2, the company was comparing the noise rejection power of the bypass network of four MLCCs versus the capabilities of just one bypass capacitor designed using X2Y.
Figure 2. The configuration on the left uses a single X2Y bypass capacitor while the configuration on the right is a conventional four MLCC setup.
As shown in the image of the PCBs used in the experiment in Figure 3, parasitics were equalized and the ground attachment and capacitor setbacks were matched between set-ups.
Figure 3. The actual PCB setups used in this amplifier decoupling test.
This test showed that building a conventional filter using two capacitor values per power pin, four capacitors total, resulted in 150 percent of the voltage noise versus using just one X2Y capacitor for both power pins. And since a single X2Y ceramic capacitor can be used instead of four conventional MLCCs, circuit designers can drastically reduce their bill of materials (BOM) as well as the size, weight, and cost of the devices they are designing.
Overall, X2Y is an exciting, forward-thinking ceramic capacitor technology. Knowles Precision Devices is not only one of the few manufacturers developing components using this technology, but we also have expert engineers on our team to support designs using X2Y that will help you further reduce the size, weight, and cost of your designs. We also have a variety of manufacturing and testing capabilities and certifications and adjacent product lines such as AEC-Q200 qualified capacitors for automotive applications, which means no matter what industry you are working in, we are well qualified to help meet your capacitor and filter design needs.
Checkout this prior blog post to better understand EMI filtering and why it is so important to have special components for it or browse our X2Y product offerings.
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本文由成长的人生转载自Knowles Blogs,原文标题为:What is X2Y and Why Would I Use It?,本站所有转载文章系出于传递更多信息之目的,且明确注明来源,不希望被转载的媒体或个人可与我们联系,我们将立即进行删除处理。
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目录- Applications SMD Capacitors/Film Capacitors Pulse Duty Capacitors EMI Suppression Capacitors/Snubber Capacitors GTO Capacitors/DC-LINK Capacitors Recommendation for Processing and Application of SMD Capacitors Recommendation for Processing and Application of Through-Hole Capacitors
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Knowles(楼氏电子)多层&单层陶瓷电容器和薄膜器件选型指南
目录- Introduction Single Layer Capacitors Multilayer Ceramic Capacitors Broadband Blocking Capacitors Thin Film Devices
型号- E40BU151Z1PX4,UL SERIES,L128XH4S,J30XXBA012LX4,F15NR0R1M1PX3,P_2CF0R3B5ST,P21BN300MA3976,S20CG250DZNX,C06BL851X-1UN-X0T,G10BU100K5PX10,P21BN300MA04678,NA SERIES,F25NR0R4M1PX3,P_2NR3R0K5ST,P21BN300MA04282,P_2CF0R5B5ST,B056RC4S,C17CF620J-7UN-X0T,D10XXKITA1EX,P62BN820MA02636,D10XXKITA5PX,D10CF0R1B5PX,F20CG0R1M1PX3,B096QC2S,D10BN100K1EX,G20XXKITAPX10,F35CF0R1M1PX3,P21300MA4678,B033ND5S,D15XXKITA5PX,L065XG9S,F25CG0R2M1PX3,P_2BN820Z5ST,P_2CD0R7B5ST,L254XF3S,L095XG9S,C08BL242X-5UN-X0T,D20XXKITA5PX,P21300MA4282,F15CGR08M5PX3,P42BN820MA03152,B28BLSBN01,P21BN300MA04572,L204XF4S,C04BL121X-5UN-X0T,C18BL103X-4GN-XOT,D15XXKITA1EX,F25CFR08M5PX3,PDW05758,D30XXKITA1EX,F20NR0R2M1PX3,P21BN300MA04733,B028RF2S,J30BLBA032LX1,G10XXKITAPX05,AH SERIES,J30XXBA002LX3,P42BN820MA04679,CF SERIES,P_2CG1R5C5ST,T30BV30X45PX,P21300MA4572,P_2CG1R0C5ST,L117XH4S,G15XXKITAPX08,D30XXKITA5PX,D20XXKITA1EX,F40NR0R5M1PX4,G25XXKITAPX10,D25XXKITA5PX,C17AH620J-7UA-X0T,D25XXKITA1EX,F35CG0R4M1PX3,P21BN300MA03976,P21300MA4733,C08BL102X-1UN-X0T,B28BTBFN01,L157XG3S,B148QF0S,C17UL620J-7UN-X0T
Capacitors for automotive applications
型号- KNB156X,KNI1910,KNB158X,KNO191X,KNG304X,KNG204X,KNU1910,KNB252X,KNB153X,KLI1910,KNA96D6,KEA1XXX,KEU1910,KNO19AX,KNO19BX,KNG191X,KNG491X,KNR153X
Looking Closer at Smoothing Capacitors in Electric Vehicles
For electric vehicle (EV) applications, smoothing capacitors are commonly used in the on-board charger (OBC), which is responsible for converting AC power from the electric grid into DC power that charges the vehicle’s battery.
厂牌及品类 发布时间 : 2022-03-26
Knowles(楼氏电子)符合AEC-Q200标准的汽车级电容器选型指南
目录- AUTOMOTIVE GRADE CAPACITORS INTRODUCTION GENERAL AND TECHNICAL INTRODUCTION MLC CAPACITORS SM EMI FILTERS
型号- 1808JA250102JCTSP,1808JA250102JXTPY2,1808JA250102GJTSYS,2220YA300563KSTS3X,085J2500101JHT,1812Y1000334MXTE03,1812Y5000474KJTWS2,1206Y1000473KNT,1206Y0500224KXT---,2220JA250102JXTB16,1206Y1000103MXTE07,1808JA250102KJTSYX,0805Y1000103KST---,1210Y2000103KCT---,1808JA250102GJTS2X
Knowles(楼氏电子)高可靠性多层陶瓷器件选型指南
目录- Introduction General and Technical Introduction MLCC Ordering Information High Rel ranges and information Broadband Blocking Capacitors Radial Leaded Capacitors SM EMI Filters Capacitor Assemblies Specialty Products
型号- UL SERIES,SBSG,SFJEL0500335MX1,1206J1K00103MXTH20,SBSMP0500474MXT,C04BL121X-5UN-X0T,C18BL103X-4GN-X0T,SBSP,RC3640R124K102PXT,C06BL851X-1UN-X0T,1210Y1000103JDT___,1206Y1000473KNT,SBSM,SF,C17CF620J-7UN-X0T,SFS,XX1206N472J101NX0500HTMHB,1812Y1000334MXTE03,CR1206N562K101NHT-4,4540S125K501NTM,1210Y1000103KXT___,1206G224K250NX050HTM,SBSGP5000473MXT,SBSPP1000153MXT,1206Y1000103MXTE07,C08BL102X-1UN-X0T,1210A1000103JXT___,1206RE331J501NHT,SFSTC5000223MX0,ST3640B474M101LJXW-5R,1210Y1000103KST___,1206W476K6R3NX080T,C08BL242X-5UN-X0T
电子商城
品牌:Nippon Chemi-Con
品类:Aluminum Electrolytic Capacitors
价格:
现货: 200,000
品牌:冠坤电子
品类:Conductive Polymer Aluminum Solid Capacitors
价格:¥1.4000
现货: 24,607
品牌:WIMA
品类:Polypropylene (PP) Film/Foil Capacitors for Pulse Applications
价格:¥0.9251
现货: 21,000
品牌:Nippon Chemi-Con
品类:导电性高分子混合型铝电解电容器
价格:¥2.7793
现货: 15,900
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