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142 results about "Equivalent series inductance" patented technology
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Equivalent series inductance (ESL) is an effective inductance that is used to describe the inductive part of the impedance of certain electrical components.
PWM controller for synchronous rectifier of flyback power converter
A synchronous rectifier PWM (SR-PWM) controller controls a MOSFET in response to the value of a secondary current and the status of a synchronous signal for both discontinuous and continuous operation mode. The secondary current is generated in a secondary circuit and is detected by two threshold-detection terminals of the SR-PWM controller. The SR-PWM controller produces the synchronous signal by detecting a switching signal of the transformer via a detection terminal of the SR-PWM controller. Furthermore, a delay-time is inserted after the MOSFET is turned off and before the next switching cycle starts to ensure a proper operation of the MOSFET. In one embodiment, an equivalent series resistance (ESR) of an output capacitor can be used as a sensor to detect the secondary current. Therefore, no additional current sensor is required.
Owner:SEMICON COMPONENTS IND LLC
Solid electrolytic capacitor
ActiveUS20100165547A1Reduce in quantitySmall sizeSolid electrolytic capacitorsLiquid electrolytic capacitorsElectrolysisEdge surface
A capacitor element includes a positive electrode body made of valve metal, a dielectric oxide layer on the positive electrode body, a solid electrolytic layer made of conductive polymer on the dielectric oxide layer, and a negative electrode layer on the solid electrolytic layer. A solid electrolytic capacitor includes the capacitor element, a package made of insulating resin covering the capacitor element, a base electrode provided at an edge surface of the package and made of non-valve metal coupled with the positive electrode body, a diffusion layer for connecting the positive electrode body to the base electrode, an external electrode on the base electrode, and an external electrode connected to the negative electrode layer. The solid electrolytic capacitor reduces the number of components and processes to reduce its cost and to have a small size, and has a small equivalent series resistance and a small equivalent series inductance.
Owner:PANASONIC CORP
Wiring structure of laminated capacitors
ActiveUS20080239622A1Fixed capacitor electrodesFixed capacitor dielectricEngineeringEquivalent series inductance
The present invention relates to a wiring structure for reducing the equivalent series inductance (ESL) of a laminated capacitor. The laminated capacitor comprises a number of conductive layers, a power via extending along a thickness direction of the laminated capacitor and arranged to extend from the top conductive layer to the bottom conductive layer, and a ground via extending along the thickness direction of the laminated capacitor and arranged to extend from the top conductive layer to the bottom conductive layer. The conductive layers include a set of first conductive layers and a set of second conductive layers. The power via is electrically coupled to the first conductive layers and the ground via is electrically coupled to the second conductive layers. The laminated capacitor further comprises a supplemental via between the power via and the ground via. The supplemental via is shorter in length than the power via and the ground via. The supplemental via is electrically coupled to one of the first conductive layers and the second conductive layer.
Owner:IND TECH RES INST
Multilayer chip capacitor, circuit board apparatus having the capacitor, and circuit board
ActiveUS20090059469A1High suppression characteristicsFixed capacitor electrodesFinal product manufactureEquivalent series inductanceCapacitor
Provided is a multilayer chip capacitor including a capacitor body having first and second capacitor units arranged in a lamination direction; and a plurality of external electrodes formed outside the capacitor body. The first capacitor unit includes at least one pair of first and second internal electrodes disposed alternately in an inner part of the capacitor body, the second capacitor unit includes a plurality of third and fourth internal electrodes disposed alternately in an inner part of the capacitor body, and the first to fourth internal electrodes are coupled to the first to fourth external electrodes. The first capacitor unit has a lower equivalent series inductance (ESL) than the second capacitor unit, and the first capacitor unit has a higher equivalent series resistance (ESR) than the second capacitor unit.
Owner:SAMSUNG ELECTRO MECHANICS CO LTD
Multilayer capacitor
ActiveUS6914767B2Reduce voltage fluctuationsReducing the equivalent serial inductanceFixed capacitor electrodesFixed capacitor dielectricElectrical conductorEquivalent series inductance
Internal dielectric layers isolated between them by a ceramic layer are arranged in a dielectric body, other internal conductor layers also isolated between them by a ceramic layer are arranged in the dielectric body by being isolated from the above internal conductor layers. Each of the all internal conductor layers is formed with a cut part, and a channel part is formed around the cut part, and the channel parts are arranged so that currents flow in mutually reverse directions between channel parts of internal conductor layers adjoining across a ceramic layer. Consequently, the equivalent serial inductance of the multilayer capacitor is largely reduced and fluctuations of a power source voltage of a CPU is made small.
Owner:TDK CORPARATION
Multilayer ceramic capacitor with internal current cancellation and bottom terminals
ActiveUS20090002921A1Minimizes loop areaSimple designFixed capacitor electrodesCross-talk/noise/interference reductionCapacitanceCeramic capacitor
Low inductance capacitors include electrodes that are arranged among dielectric layers and oriented such that the electrodes are substantially perpendicular to a mounting surface. Vertical electrodes are exposed along a device periphery to determine where termination lands are formed, defining a narrow and controlled spacing between the lands that is intended to reduce the current loop area, thus reducing the component inductance. Further reduction in current loop area and thus component equivalent series inductance (ESL) may be provided by interdigitated terminations. Terminations may be formed by various electroless plating techniques, and may be directly soldered to circuit board pads. Terminations may also be located on “ends” of the capacitors to enable electrical testing or to control solder fillet size and shape. Two-terminal devices may be formed as well as devices with multiple terminations on a given bottom (mounting) surface of the device. Terminations may also be formed on the top surface (opposite a designated mounting surface) and may be a mirror image, reverse-mirror image, or different shape relative to the bottom surface.
Owner:KYOCERA AVX COMPONENTS CORP
Land grid feedthrough low esl technology
ActiveUS20080253059A1Reduce componentsFinal product manufactureElectrical connection printed elementsEquivalent series inductancePower filter
Disclosed are apparatus and methodology for providing land grid feedthrough capacitor designs having broad applicability to signal and power filtering technologies. Such capacitor designs provide characteristics for use in decoupling applications involving both signal level and power level environments. Low equivalent series inductance (ESL) is provided by current cancellation techniques involving opposite current flow in power or signal and ground current paths through the device.
Owner:KYOCERA AVX COMPONENTS CORP
Ultrasonic sensor
InactiveUS20100242611A1Analysing solids using sonic/ultrasonic/infrasonic wavesPiezoelectric/electrostriction/magnetostriction machinesUltrasonic sensorResonance
A single element of an ultrasonic transducer includes at least one combination of an equivalent series capacitor C1, an equivalent series inductor L1, and an equivalent series resistance R1. The ultrasonic transducer further includes an equivalent parallel capacitor C0. An inductor L2 is connected in series between the ultrasonic transducer and the drive circuit. A first resonance frequency of the equivalent series capacitor C1 and the equivalent series inductor L1 is F0. A second resonance frequency determined by at least the equivalent parallel capacitor C0 and the inductor L2 is Fp. A drive circuit drives the ultrasonic transducer while switching the driving frequency of the ultrasonic transducer to one of the resonance frequency F0 and the resonance frequency Fp.
Owner:DENSO CORP
Digital hybrid V2 control for buck converters
ActiveUS8575911B2Avoid instabilityIncrease sampling rateEfficient power electronics conversionPulse generatorCapacitanceĆuk converter
Stabilization of a switching voltage regulator employing V2 control against ripple oscillation instability when the equivalent series resistance (ESR) of an output capacitor is small is provided by providing both an external ramp and an internal ramp (only the latter of which requires an approximation of inductor current) in the control feedback path, preferably including both inner and outer feedback loops. Approximation of inductor current using such an arrangement is non-critical and may be estimated based on power input voltage. Drift of a circuit providing such an inductor current estimation is preferably avoided by adjusting control duty cycle or slew rate of the positive-going ramp portion of the estimated inductor current triangular waveform.
Owner:VIRGINIA TECH INTPROP INC
Multilayer ceramic capacitor with internal current cancellation and bottom terminals
ActiveUS7697262B2Simple designLow costFixed capacitor electrodesFixed capacitor dielectricCapacitanceCeramic capacitor
Owner:KYOCERA AVX COMPONENTS CORP
Multilayer ceramic capacitor with internal current cancellation and bottom terminals
ActiveUS7414857B2Simple designLow costFixed capacitor dielectricCross-talk/noise/interference reductionCapacitanceEquivalent series inductance
Owner:KYOCERA AVX COMPONENTS CORP
Method of implementing low ESL and controlled ESR of multilayer capacitor
ActiveUS20080310078A1Low ESLFixed capacitor electrodesStacked capacitorsEquivalent series inductanceElectrical polarity
Disclosed is a method of implementing controlled equivalent series resistance (ESR) having low equivalent series inductance (ESL) of a multi-layer chip capacitor which includes a plurality of internal electrodes each having first polarity or second polarity which is opposite to the first polarity, and dielectric layers each disposed between the internal electrodes of the first polarity and the second polarity, wherein the internal electrodes having the first polarity and the internal electrodes having the second polarity are alternated at least once to form one or more blocks being stacked.
Owner:SAMSUNG ELECTRO MECHANICS CO LTD
Land grid feedthrough low ESL technology
ActiveUS8238116B2Final product manufactureElectrical connection printed elementsPower flowEquivalent series inductance
Disclosed are apparatus and methodology for providing land grid feedthrough capacitor designs having broad applicability to signal and power filtering technologies. Such capacitor designs provide characteristics for use in decoupling applications involving both signal level and power level environments. Low equivalent series inductance (ESL) is provided by current cancellation techniques involving opposite current flow in power or signal and ground current paths through the device.
Owner:KYOCERA AVX COMPONENTS CORP
Multilayered chip capacitor and printed circuit board having embedded multilayered chip capacitor
InactiveUS7230815B2Improve equipment reliabilityReduce parasitic capacitanceFixed capacitor electrodesFixed capacitor dielectricEquivalent series inductanceParasitic capacitance
A multilayered chip capacitor (MLCC) includes internal electrodes and external electrodes formed to be perpendicular to the internal electrodes, whereby parasitic capacitance is reduced, resulting in no parallel resonance frequency effects. In addition, the MLCC has a capacitor structure, which provides a first surface and a second surface formed in a stacking direction of the dielectric layers in the capacitor body as a top surface and a bottom surface. Hence, in the thin capacitors having the same size, the number of internal electrode layers is increased, thereby reducing the equivalent series resistant (ESR) and equivalent series inductance (ESL). Further, the printed circuit board (PCB) having an embedded MLCC is easily manufactured.
Owner:SAMSUNG ELECTRO MECHANICS CO LTD
High-density capacitor and electrode leading-out method thereof
ActiveCN102569250ALarge capacityReduce volumeSemiconductor/solid-state device detailsSolid-state devicesElectrical resistance and conductanceHigh density
The invention relates to a high-density capacitor and an electrode leading-out method thereof, wherein the capacitor comprises a substrate, on which a plurality of local electrode layers grow, the local electrode layers include even local electrode layers and odd local electrode layers matched with the even local electrode layers, and high dielectric constant dielectric layers are arranged between the odd local electrode layers and the even local electrode layers, interconnection electrode layers comprising even interconnection electrodes and odd interconnection electrodes are arranged above the substrate, and the odd interconnection electrodes are isolated from the even interconnection electrodes in an insulating manner. The capacitor provided by the invention has the advantages of high electric capacity, small equivalent series inductance and adjustable equivalent series inductance; and the equivalent series inductance can be regulated according to the demands of the circuit so as to reach the best matching. With the advantages of high precision, high reliability, small volume, long service life and environmental protection, the product is widely used for decoupling a high frequency circuit and removing noise; and the product can be used in a common tank circuit. The capacitor can be integrated in an IC (integrated circuit) chip or packaged in a same package together with the IC easily.
Owner:WUXI ZHONGWEI JINGYUAN ELECTRONIC CO LTD
Electric control scanning waveguide leaky-wave antenna based on liquid crystal
ActiveCN105006656AEasy to primeSimple control mechanismLeaky-waveguide antennasWave structureSpecial design
The invention provides an electric control scanning waveguide leaky-wave antenna based on liquid crystal, belongs to the technical field of microwave antenna engineering, and aims at solving problems that a conventional electric control scanning leaky-wave antenna based on a varactor and other conventional electrically controlled elements is difficult to work at a microwave high-frequency band, and existing liquid crystal electric control scanning leaky-wave antennas require the special design of a bias circuit. The electric control scanning waveguide leaky-wave antenna comprises a top part dielectric plate layer, a metal layer, an insulation paste layer, a liquid crystal layer and a bottom part waveguide slot. The metal layer is arranged at the lower surface of the top part dielectric plate layer. The metal layer has a leaky-wave structure with etching of periodic transverse seams. Equivalent series inductance of electromagnetic wave is enabled to be increased by the periodic transverse seams when electromagnetic wave is transmitted between the bottom part waveguide slot and the metal layer. The metal layer is provided with N periodic seam units. Seam unit spacing distance p is from lambdag / 2 to lambdag. The seams of the middle part are main radiation units. Seam length l of the main radiation unit is from lambdag / 4 to lambdag / 2. The former four and the latter four seams are auxiliary radiation units.
Owner:北京超材信息科技有限公司
Multilayer capacitor having low equivalent series inductance and controlled equivalent series resistance
ActiveUS8120891B2Low ESLSimple wayFixed capacitor electrodesFixed capacitor dielectricPower flowEquivalent series inductance
In a capacitor body of a multilayer capacitor, one second capacitor portion is sandwiched between two first capacitor portions. An ESR is controlled by setting a width of lead portions of third and fourth internal electrodes disposed in the second capacitor portion to be less than that of lead portions of first and second internal electrodes disposed in the first capacitor portions and by changing ratios between the first and second capacitor portions in the width of the lead portions and in the number of stacked internal electrodes. In the first capacitor portions, current paths from the internal electrodes to an external terminal electrode are widely distributed so that the first capacitor portions have a relatively low ESL, and accordingly, the ESL of the entire multilayer capacitor is reduced.
Owner:MURATA MFG CO LTD
Multilayer chip capacitor, circuit board apparatus having the capacitor, and circuit board
ActiveUS7630208B2Fixed capacitor electrodesFinal product manufactureEquivalent series inductanceEngineering
Provided is a multilayer chip capacitor including a capacitor body having first and second capacitor units arranged in a lamination direction; and a plurality of external electrodes formed outside the capacitor body. The first capacitor unit includes at least one pair of first and second internal electrodes disposed alternately in an inner part of the capacitor body, the second capacitor unit includes a plurality of third and fourth internal electrodes disposed alternately in an inner part of the capacitor body, and the first to fourth internal electrodes are coupled to the first to fourth external electrodes. The first capacitor unit has a lower equivalent series inductance (ESL) than the second capacitor unit, and the first capacitor unit has a higher equivalent series resistance (ESR) than the second capacitor unit.
Owner:SAMSUNG ELECTRO MECHANICS CO LTD
Aluminum electrolytic condenser
InactiveCN1499547AStrong noise absorption abilityReduce feverSolid electrolytic capacitorsCapacitor terminalsCapacitanceEquivalent series inductance
Provided is an aluminum electrolytic capacitor with reduced ESR (equivalent series resistance) and ESL (equivalent series inductance). In an aluminum electrolytic capacitor including a capacitor element 1 having an anode side lead terminal 3 for anode lead-out and a cathode side lead terminal 5 for cathode lead-out, a bottomed exterior case 9 in which the capacitor element 1 is stored, and a seal rubber 8 sealing the opening part of the bottomed exterior case 9, there is a terminal structure having the selected number of the anode side and cathode side lead terminals 3 and 5 from the range within 2 to 4, respectively. By this plural terminal structure, there is a circuit in which ESR and ESL are equivalently arranged in parallel. Thereby, the resistance of the lead terminal that is the ESR component and the connection resistance between foil and the lead terminal are eliminated, so the ESR can be reduced. Moreover, the influence of inductance of the lead terminal can be removed, so the ESL can be reduced.
Owner:FUJITSU MEDIA DEVICES
Liquid crystal electrical control zero-crossing scanning leaky wave antenna based on comb-line waveguide
ActiveCN105071019AImprove radiation efficiencyReduce leakageAntenna supports/mountingsRadiating elements structural formsEquivalent series inductanceLine structure
The invention discloses a liquid crystal electrical control zero-crossing scanning leaky wave antenna based on comb-line waveguide, which belongs to the technical field of microwave antenna construction. The problems that a conventional electrical control scanning leaky wave antenna based on a varactor and other traditional electric tuning elements difficultly works in a microwave high frequency band and the existing liquid crystal electrical control fixed-frequency scanning leaky wave antenna is difficult to realize zero-crossing scanning and requires a bias circuit which is specially designed are solved. The antenna provided by the invention comprises a top dielectric plate layer, a metal layer, a liquid crystal layer and a bottom waveguide groove. The metal layer is arranged between the top dielectric plate layer and the bottom waveguide groove. A longitudinal groove structure is arranged on the upper surface of a rectangular plate to form the bottom waveguide groove. The metal layer is in a comb-line structure. N periodic slit units are arranged between two columns of comb teeth on the comb-line structure. N periodic slit units comprise two groups of vertical slit columns and a group of transverse slit column. Through periodic transverse slits, the equivalent series inductance of electromagnetic waves spreading between the bottom waveguide groove and the metal layer is increased. Through periodic vertical slits, the equivalent parallel capacitance is increased.
Owner:北京超材信息科技有限公司
Method for reducing power-supply ripples of active matrix light-emitting display
ActiveCN102214440AEliminate negative effectsImprove picture qualityStatic indicating devicesCapacitanceConversion factor
The invention discloses a method for reducing power-supply ripples of an active matrix light-emitting display, comprising the following steps of: a) obtaining equivalent series inductance ESL, equivalent series resistance ESR and capacitance c of a panel parasitic capacitor of the active matrix light-emitting display varying with frequency, and obtaining a conversion factor a from a gray-scale level to a load level of a display panel; b) taking frame or line as unit to count the gray-scale level N to be displayed of each frame or each line, and estimating the load level; c) calculating a load equivalent voltage drop Vdroop according to the estimated load level; d) generating an offset voltage Voffset by serially connected L, R and C, wherein the Voffset is almost equal to the load equivalent voltage drop Vdroop; and e) outputting the offset voltage by a power supply module, and displaying the current frame or line. In the method for reducing the power-supply ripples of the active matrix light-emitting display, the load equivalent voltage drop is estimated and compensated, so that negative effect caused by the power-supply ripples is reduced, and image quality is improved.
Owner:KUNSHAN NEW FLAT PANEL DISPLAY TECH CENT
Multilayer ceramic capacitor
ActiveCN104637680AThin/thick film capacitorFixed capacitor electrodesEquivalent series inductanceCeramic capacitor
A multilayer ceramic capacitor may have low equivalent series inductance (ESL), in which via electrodes are opposed to each other diagonally and be off-centered from positions corresponding to center points of external electrodes, so that a distance between the via electrodes is significantly reduced and a current path is reduced.
Owner:SAMSUNG ELECTRO MECHANICS CO LTD
Monolithic ceramic capacitor
ActiveUS20080291600A1Good effectIncrease capacitanceFixed capacitor electrodesFixed capacitor dielectricCapacitanceElectrical conductor
A multi-terminal monolithic ceramic capacitor arranged to reduce an equivalent series inductance and having an array structure is provided. A first same-polarity-connection conductor and a second same-polarity-connection conductor are provided inside a capacitor body so as to extend over at least two capacitors. The first same-polarity-connection conductor is electrically connected to a plurality of first external terminal electrodes, and the second same-polarity-connection conductor is connected to a plurality of second external terminal electrodes. In the monolithic ceramic capacitor which is mounted on a wiring substrate, the overall capacitance can be maintained even if an accident, such as cracking of a solder joint, occurs in one of the external terminal electrodes.
Owner:MURATA MFG CO LTD
High-resistance broadband attenuation circuit and oscilloscope using same
ActiveCN102053172AReduce crosstalkMany grounding pointsDigital variable displayElectrical measurement instrument detailsHigh resistanceEquivalent series inductance
The invention discloses a high-resistance broadband attenuation circuit and also discloses a digital oscilloscope using the high-resistance broadband attenuation circuit. The high-resistance broadband attenuation circuit comprises a first relay, a second relay, a high-frequency compensation circuit, a first RC (Remote Control) network and a second RC network. The moving contact of the first relay is connected with an input end, the moving contact of the second relay is connected with an output end, and the control ends of the first relay and the second relay are connected together; the second static contact of the first relay is connected with the high-frequency compensation circuit and the first RC network, the other end of the high-frequency compensation circuit is grounded, and the other end of the first RC network is connected with the second RC network; and one end of the second RC network is grounded, and the other end of the second RC network is connected with the second static contact of the second relay through a resistor. The influence of equivalent series inductance at a high frequency on the high-resistance broadband attenuation circuit is quite small; a high-frequency signal component has sufficient release for the ground; and the bandwidth of an output signal is large, the signal overshoot is small, and the frequency response is good.
Owner:RIGOL
Automatic linear induction traction motor parameter identification method for general frequency converter
ActiveCN102193065AThe parameters are accurateWill not increase investmentDynamo-electric machine testingExperimental methodsMathematical model
The invention relates to an automatic linear induction traction motor parameter identification method for a general frequency converter, which comprises the steps: a linear induction motor is firstly subjected to equivalence to form a dq model and simultaneously, a mathematic model of the converter is considered in the dq model of the linear induction motor; primary parameters of the linear induction motor are obtained through traditional no-load and an experimental method of introducing direct current, and then, based on the situation that a secondary leakage inductance is not equal to a primary inductance, mutual inductance is obtained by solving a third-order polynomial directly in an equivalent inductance of the entire circuit, so that the primary leakage inductance and the secondary leakage inductance can be solved respectively, the methods for identifying the parameters of the linear inductance motor and the parameters of a rotary inductance motor are united by defining the formula as follows: beta = Lm / Lr, so that different types of motors and parameters thereof can be identified by selecting different beta values, that is to say, accurate parameters can be obtained regardless of the linear inductance motor or the rotary inductance motor.
Owner:CRRC QINGDAO SIFANG CO LTD +1
AC-coupled equivalent series resistance
ActiveUS7719241B2Reduced stabilityGood flexibilityElectric variable regulationElectrical resistance and conductanceEquivalent series inductance
AC-coupled equivalent series resistance (ESR) is introduced into a control circuit to provide additional stability in the feedback control loop. A sub-circuit emulates the effect of a higher value ESR in the output capacitor. The additional ESR in the feedback control loop inserts a zero into the transfer function that describes the circuit response at a desired frequency. The added zero compensates for the effects of unwanted or unavoidable poles in the transfer function, allowing for a greater range of input signal frequencies.
Owner:ANALOG DEVICES INC
Conductive Adhesive Attachment of Capacitor Terminals
InactiveUS20070084043A1Improve reliabilityAllow useElectrolytic capacitorsFixed capacitor dielectricEquivalent series inductancePolymer thin films
An improved electrical terminal attachment process for a wound polymer film / foil or metallized film capacitor is described that minimizes thermal damage to the capacitor structure and improves the current carrying capability of the capacitor. The process employs an electrically conductive adhesive that can be cured at low temperatures. The disclosed process improves the reliability of the capacitor when used at high RMS or pulsed currents. It also enables capacitor application structures with reduced equivalent series inductance that would be otherwise difficult or impossible to fabricate.
Owner:SB ELECTRONICS
Interleaving LCLC resonant converter with wide load and wide gain
InactiveCN109861543ABig gainImprove efficiencyEfficient power electronics conversionDc-dc conversionCapacitanceEquivalent series inductance
The present invention discloses an interleaving LCLC resonant converter with a wide load and a wide gain. The interleaving LCLC resonant converter comprises an input direct current source, two primaryinversion networks, two first resonance inductors, two first resonance capacitors, two second resonance inductors, two second resonance capacitors, two transformers, a secondary rectification circuit, an output filter capacitor and an output load. A hybrid control mode of frequency conversion and phase shift is employed to achieve wide voltage gain in a wide load condition. The second resonance capacitors and the second resonance inductors are connected in series to obtain adjustable equivalent excitation inductance, the equivalent excitation inductance is smaller to facilitate achieving of the high voltage gain at a low frequency, and the equivalent excitation inductance is larger to facilitate improvement of the working efficiency at a high frequency. The maximum switching frequency isa resonant frequency, the phase between the two modules is regulated at this frequency to further widen the voltage gain so as to ensure the zero-voltage turning-on of a primary switch tube and the zero-current turning-off of a secondary rectification tube in the whole working range and facilitate achievement of high efficiency and high power density.
Owner:ZHEJIANG UNIV
Wiring structure of laminated capacitors
ActiveUS7742276B2Fixed capacitor electrodesFixed capacitor dielectricEquivalent series inductanceEngineering
The present invention relates to a wiring structure for reducing the equivalent series inductance (ESL) of a laminated capacitor. The laminated capacitor comprises a number of conductive layers, a power via extending along a thickness direction of the laminated capacitor and arranged to extend from the top conductive layer to the bottom conductive layer, and a ground via extending along the thickness direction of the laminated capacitor and arranged to extend from the top conductive layer to the bottom conductive layer. The conductive layers include a set of first conductive layers and a set of second conductive layers. The power via is electrically coupled to the first conductive layers and the ground via is electrically coupled to the second conductive layers. The laminated capacitor further comprises a supplemental via between the power via and the ground via. The supplemental via is shorter in length than the power via and the ground via. The supplemental via is electrically coupled to one of the first conductive layers and the second conductive layer.
Owner:IND TECH RES INST
Multilayer capacitor
ActiveUS20070041146A1Equivalent series inductanceShorten the lengthFixed capacitor electrodesFixed capacitor dielectricEquivalent series inductanceEngineering
A multilayer capacitor comprises a multilayer body and a plurality of terminal electrodes formed on a side face of the multilayer body. The multilayer body includes an inner layer portion in which a plurality of dielectric layers and a plurality of inner electrodes are alternately laminated, and an outer layer portion in which a plurality of dielectric layers are laminated. In the outer layer portion, a conduction path electrically connecting a plurality of different positions in at least one of the plurality of terminal electrodes to each other is arranged. A current flowing through the terminal electrode electrically connected to the conduction path is shunted into the conduction path. This lowers the equivalent series inductance of the multilayer capacitor.
Owner:TDK CORPARATION
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