If there is no dc flux in the core, the design calculations are straightforward. When you make these adjustments, repress the design output button to recalculate with the new values. The design of a multilayer planar transformer for a dcdc. What you might want to look at is mutually coupled coils first, perhaps you already have. Pq32 series planar inductors are fixed power inductors wferrite core available in surface mount smt or through hole tab tht mounting style. Microfabrication of planar inductors for high frequency. I would also like to thank the department of information technology, government of india.
Choke design, high powerharmonic filter design, power factor harmonic filter design, input inductor design, dc link reactor design, dc link filter. Magnetic builder magnetic design software, inductor and. Find the perfect coupled inductor for sepic, zeta, or other applications. Planar e cores offer ease of assembly, consistent results and a low profile. There have been numerous publications on spiral inductor design at microwave frequencies. This page deals purely with inductors or transformers which are intended to store energy or act as dc chokes. Coilcraft design tools powerful web tools to help you find the best parts and optimize your designs. Net ties are components that allow multiple separate nets connected.
Design and optimization of printed circuit board inductors for wireless power transfer system. Choke design, high powerharmonic filter design, power factor harmonic filter design, input inductor. Examines how a planar inductor or transformer core could be made from a net tie component in altium designer. Ss rscis on crics sabrie smana rehep selimaiss 241515 olume 21. Our shielded planar inductors come in a surface mount smt construction type. One example of a developed and available construction is presented and discussed in this paper.
In this work, design of a multispiral stacked solenoidal inductor for bio medical application in. The circuit goal is to design a local rcl filter for the lt1534, where the capacitive and resistive elements are comprised of discrete passive leaded components, but because of size constraints as well as the. Planar spiral air coil, planar inductor, design and calculations based on the harold a. Optimum inductor, capacitor and transformer synthesis using emx and continuum integrand software, inc. Magnetics inductor design using powder cores is an. The design of an ac inductor is quite similar to that of a transformer. Design and optimization of printed circuit board inductors. This paper discusses the magnetic fields within the planar structure and their effects on the distribution of high frequency currents in the windings. Optimum inductor, capacitor and transformer synthesis.
In this paper, rectangular spiral layout is used to design four winding planar inductor. The design site for hardware software, and firmware engineers. Planar cores, ferrite planar cores, software tool for designing. Optimum inductor, capacitor and transformer synthesis using. This software uses a design algorithm intended to specify the smallest design package size for the given input parameters currents, inductance values, frequency, etc. At maximum load, the average inductor current will be 3. You cant use simulation to design planar magnetic transformers. Strategies for optimizing planar design are presented, and illustrated with design examples. Pier b online planar inductor design for high power. The custom ic design tools of cadence design systems and. Magnetics has online design software for four specific applications. You can design planar transformers for the following topologies and power levels, based on 100 khz switching frequency. Additionally, the tool can help in finding an optimum inductor for a particular design problem.
Because of the everexpanding capabilities of the manufacturing industry and the many complex manufacturing processes involved in planar magnetics, designers are encouraged to develop and. The program is very useful for the spiral inductor design. In 1995, intusoft acquired the rights to the transformer and inductor spreadsheet, originally a dosbased program. Magnetics designer is a standalone software program for windows that designs all types of layer and sectorsplit bobbin wound transformers and inductors, and generates a corresponding spice model. In this sort of a power electronic converter the leakage inductance must be strictly fitted to the designed output parameters. Pcb layout software packages typically have trouble directly drawing complex curved routes like spirals, splines, and ellipses, but advanced packages do have the ability to import dxf files. Getting started design of an inductor for a buck converter geckomagnetics is a tool that enables fast, accurate and userfriendly modelling and paretooptimal design of inductive power components. With planar transformers the word planar can somewhat distract from what it is. Featuring magnetics kool m, mpp, high flux, and xflux powder cores, this design utility aids in core selection for dc output inductors, input chokes, pfc power factor correction inductors, high current inductors, and other energy storage devices. Characterization and modeling of planar spiral inductors and pad stack parasitic effects john capwell. Planar inductors can be overlapped on multilayer boards to design planar transformers on the printed circuit board.
This is a planar transformer, dedicated for a dcdc converter with a resonant inverter. Ferrites are typically considered for use at frequencies of 10 khz and above. Unlike conventional wirewound inductive components windings of inductors based on planar cores are printed on pcb. Characterization and modeling of planar spiral inductors. Design and modeling of a square planar inductor for a push pull converter. Characterization and modeling of planar spiral inductors and. Decrease the time used to generate planar transformers dramatically using this tool. This field allow to modify the number of strands used to make the turns. Coilcraft planar prototyping kit rf chip inductors. The software will change dc resistance and copper losses accordingly. Another thing to think about is would a planar transformer be the best solution. Design inputs include dc current, ripple current, full load and no load inductances, and more. For example flyback transformers, boost or buck inductors, hysteretic constantcurrent inductors etc. Pdf design and modeling of a square planar inductor for a.
Edn a new calculation for designing multilayer planar. The dc resistance of the inductor must be less than 0. Microfabrication of planar inductors fo r high frequency dcdc power converters 121 a b c fig. The litzopt program optimizes litz wire stranding design to minimize the cost or power loss. The authors present a systematic study of the modelling, design, and fabrication of planar spiral inductors implemented in a high speed 0. Design, simulation, and implementation of low profile microstrip spiral inductors for high. Microfabrication of planar inductors for high frequency dc. Magnetic builder magnetic design software, inductor and transformer design tool poweresim is a free webbased software providing power supply smps design, transformer design, magnetic design, loss. The dc reactor design tool was created as a design tool, to assist you in your application designs of. Software for magnetics design here we present some design software you can download or run online. Proposed stacking method enhances the inductance density of the inductor for a given area. Planar magnetic devices offer several advantages over their conventional counterparts. Topics include planar transformers, hall effect devices, flyback transformers. This tool is based on the microsoft excel application package, you will need microsoft excel 2007 or newer to use this tool.
Jul 29, 2010 the twolayer planar spiral inductors q and selfresonantfrequency are better than that of a chip inductor withthe same value. Formulas layer design 14 design of planar power transformers. Characterization and modeling of planar spiral inductors and pad stack parasitic effects john capwell abstract this thesis concentrates on rfmicrowave characterization and modeling of planar spiral inductors and pad stack parasitics. Frontend design synthesis software streamlines the model creation. Pcb layout software packages typically have trouble directly drawing complex curved. Stanford microwave integrated circuits laboratory website. The apparent power, pt, of an inductor is the va of the. You can experiment with the number of turns, dcr and the location of the windings within the as. Order designers kit c356 view the kit manual this is the kit used by coilcraft designers to provide fast turnaround of planar transformer samples.
Coil32 is a free coil inductor calculator, that allows calculating. Strategies for optimizing planar design are presented, and illustrated. Design and modeling of a square planar inductor for a push pull converter article pdf available in journal of electrical and electronics engineering 81. Ferroxcube 2 exploded view of a planar transformer. Magnetics designer produces a complete transformer or inductor design based upon electrical specifications, including a winding sheet report and a spicecompatible model with parasitics. The litzopt program optimizes litz wire stranding design to minimize the cost or power loss, for transformers or inductors. The twolayer planar spiral inductors q and selfresonantfrequency are. Used in switching power supplies, dcdc converters, fpga. Plot the specifications, l vs i, and core losses of up to 6 inductors on the same graphs.
With our planar inductor technology, a low number of turns are implemented using. Above 20 khz the ferrite design is typically losslimited while below 20 khz the design is typically limited by the flux capacity of the unit. Electrical engineering stack exchange is a question. The design of a multilayer planar transformer for a dcdc converter with a resonant inverter magdalena puskarczyk, radoslaw jez abb corporate research center, a starowislna st. Net ties are components that allow multiple separate nets connected via smt pads to. With our planar inductor technology, a low number of turns are implemented using stamped copper plates which enables low inductance and very high currentcarrying capabilities. Inductors are devices that store and convert energy. The design software intellisuite of intellisense software corp. Microfabrication of planar inductors for high frequency dcdc power converters elias haddad, christian martin, bruno allard. Simulation and design of an integrated planar inductor using. After that fem simulators are introduced to numerically compute the winding loss. The magnetics designer software was originally developed by analytic artistry, the leader in the field of nonlinear magnetics design tools.
Magnetic builder is a magnetic design software to design magnetic component, inductor,transformer, coil, with different ferrite or powder core material. This planar inductor board is comprised of 8 3oz layers and 2 external noflow dielectric layers. The spiral planar inductor can be fabricated only by using two or more metallic layers fabrication processes, because one of layers is used for underpass. Simulation and design of an integrated planar inductor. This paper discusses the magnetic fields within the planar structure and their effects on the distribution of high fre. Inductance calculation and layout optimization for planar. Magnetics designer software makes transformer and inductor design easy. That is why the transformer must really be designed and manufactured with a high precision. Getting started design of an inductor for a buck converter after starting geckomagnetics, the tab start becomes active, as is illustrated in the figure above. Planar inductor design for high power applications by a. This paper reports an optimization technique for design and implementation of the pcb in ductors. Design and modeling of a square planar inductor for a push. The pcb utilizes thin core dielectrics to maintain its strict maximum thickness requirement, set by the e cores minimum opening. Figure 8 shows a fifthorder lowpass filter with twolayercoupled planar spiral inductors using the new calculation forthe design of this filter.
Saturn pcb toolkit saturn pcb design pcb design service. A bh loop characterizes the useful region of operation of a magnetic component. Square, hexagonal, circular are common ones, but a description of a rectangular does not seem to exist. Topic 4 designing planar magnetics texas instruments. Planar magnetics design for lowvoltage dcdc converters. In this effect we create a software program dedicate to dc inductance calculation and to layout optimization for spiral inductors.
This software uses a design algorithm intended to specify the smallest design package size for the given input. Getting started design of an inductor for a buck converter. The apparent power, pt, of an inductor is the va of the inductor. This is to certify that the thesis entitled optimization of planar spiral inductor and design of multilayer pyramidal inductor for silicon radio frequency integrated circuits submitted by genemala haobijam. Calculates the inductance of a planar pcb inductor. Consequently, a software platform for magnetics design is established. Dec 09, 2011 decrease the time used to generate planar transformers dramatically using this tool.
Planars commitment to high quality, leadingedge display technology is unparalleled. Umc jun hong ou jijun hong ou, jiwei hsu tim cheng david. The user can model the losses and temperature of a single predefined inductor. Magnetics inductor design using powder cores is an aid to assist design engineers in selecting the optimum core for inductor applications, specifically switchmode power supply smps output filters, also known as dc inductors. Planar spiral inductor design process pcb design cadence. In this sort of a power electronic converter the leakage inductance must be strictly fitted to the. Magnetic builder magnetic design software, inductor and transformer design tool poweresim is a free webbased software providing power supply smps design, transformer design, magnetic design, loss analysis, thermal analysis, waveform analysis, mtbf analysis, bom building, dvt analysis and optimization of power supply smps. Ferroxcube software design tool sfdt 2010 assists design engineers in optimizing their magnetics components. Planar inductor pcb layout gendreau microsystems, inc. Creating planar transformers in altium designer youtube. Optimization of planar spiral inductor and design of. In researching how to design a planar rectangular pcb coil, ive come across numerous papers describing many topologies, except for a rectangular one. Spiral type planar inductors are widely used in the design of power ampli. The program has additional plugins to calculate another manner of coils.
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