Microfabrication of planar inductors for high frequency dcdc power converters elias haddad, christian martin, bruno allard. I would also like to thank the department of information technology, government of india. For example flyback transformers, boost or buck inductors, hysteretic constantcurrent inductors etc. Design and modeling of a square planar inductor for a push. Choke design, high powerharmonic filter design, power factor harmonic filter design, input inductor design, dc link reactor design, dc link filter. Used in switching power supplies, dcdc converters, fpga. This software uses a design algorithm intended to specify the smallest design package size for the given input parameters currents, inductance values, frequency, etc. Planar inductor design for high power applications by a. Inductors are devices that store and convert energy. A power electronics converter design requires a filter inductor. That is why the transformer must really be designed and manufactured with a high precision. Design and optimization of printed circuit board inductors for wireless power transfer system. Strategies for optimizing planar design are presented, and illustrated with design examples.
Pcb layout software packages typically have trouble directly drawing complex curved. 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. With our planar inductor technology, a low number of turns are implemented using. This paper reports an optimization technique for design and implementation of the pcb in ductors. If there is no dc flux in the core, the design calculations are straightforward.
Plot the specifications, l vs i, and core losses of up to 6 inductors on the same graphs. Coilcraft design tools powerful web tools to help you find the best parts and optimize your designs. The software will change dc resistance and copper losses accordingly. This field allow to modify the number of strands used to make the turns. This paper discusses the magnetic fields within the planar structure and their effects on the distribution of high fre. You can experiment with the number of turns, dcr and the location of the windings within the as. Magnetics inductor design using powder cores is an. What you might want to look at is mutually coupled coils first, perhaps you already have. This page deals purely with inductors or transformers which are intended to store energy or act as dc chokes. 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.
Order designers kit c356 view the kit manual this is the kit used by coilcraft designers to provide fast turnaround of planar transformer samples. The design site for hardware software, and firmware engineers. Topics include planar transformers, hall effect devices, flyback transformers. The magnetics designer software was originally developed by analytic artistry, the leader in the field of nonlinear magnetics design tools. In this work, design of a multispiral stacked solenoidal inductor for bio medical application in. With planar transformers the word planar can somewhat distract from what it is.
Square, hexagonal, circular are common ones, but a description of a rectangular does not seem to exist. Design and optimization of printed circuit board inductors. Planar inductor pcb layout gendreau microsystems, inc. This paper discusses the magnetic fields within the planar structure and their effects on the distribution of high frequency currents in the windings. 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. 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. Pq32 series planar inductors are fixed power inductors wferrite core available in surface mount smt or through hole tab tht mounting style. Optimum inductor, capacitor and transformer synthesis using emx and continuum integrand software, inc. This planar inductor board is comprised of 8 3oz layers and 2 external noflow dielectric layers. This is a planar transformer, dedicated for a dcdc converter with a resonant inverter. Optimization of planar spiral inductor and design of. Planar magnetics design for lowvoltage dcdc converters. Proposed stacking method enhances the inductance density of the inductor for a given area. 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.
Design and modeling of a square planar inductor for a push pull converter. Choke design, high powerharmonic filter design, power factor harmonic filter design, input inductor. Introduction to planar magnetic pcb design terratel. After that fem simulators are introduced to numerically compute the winding loss. In this paper, rectangular spiral layout is used to design four winding planar inductor.
In this sort of a power electronic converter the leakage inductance must be strictly fitted to the designed output parameters. The program is very useful for the spiral inductor design. Saturn pcb toolkit saturn pcb design pcb design service. In this sort of a power electronic converter the leakage inductance must be strictly fitted to the. Net ties are components that allow multiple separate nets connected via smt pads to. Net ties are components that allow multiple separate nets connected. 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. 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. One example of a developed and available construction is presented and discussed in this paper. Calculates the inductance of a planar pcb inductor. In researching how to design a planar rectangular pcb coil, ive come across numerous papers describing many topologies, except for a rectangular one. Jul 29, 2010 the twolayer planar spiral inductors q and selfresonantfrequency are better than that of a chip inductor withthe same value. You can design planar transformers for the following topologies and power levels, based on 100 khz switching frequency. The twolayer planar spiral inductors q and selfresonantfrequency are.
The dc reactor design tool was created as a design tool, to assist you in your application designs of. You cant use simulation to design planar magnetic transformers. Simulation and design of an integrated planar inductor using. Planar magnetic devices offer several advantages over their conventional counterparts. Edn a new calculation for designing multilayer planar. The program has additional plugins to calculate another manner of coils. 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. Characterization and modeling of planar spiral inductors. Magnetics designer software makes transformer and inductor design easy. Additionally, the tool can help in finding an optimum inductor for a particular design problem.
Our shielded planar inductors come in a surface mount smt construction type. Ferrites are typically considered for use at frequencies of 10 khz and above. The pcb utilizes thin core dielectrics to maintain its strict maximum thickness requirement, set by the e cores minimum opening. Design inputs include dc current, ripple current, full load and no load inductances, and more. The user can model the losses and temperature of a single predefined inductor. Another thing to think about is would a planar transformer be the best solution. Single layer planar spiral coil inductor calculator. Creating planar transformers in altium designer youtube. The design of an ac inductor is quite similar to that of a transformer. Coil32 is a free coil inductor calculator, that allows calculating. With innovations in lcd display, video walls, large format displays, and touch interactivity, planar offers the best. Planar spiral inductor design process pcb design cadence. Consequently, a software platform for magnetics design is established. The apparent power, pt, of an inductor is the va of the.
There have been numerous publications on spiral inductor design at microwave frequencies. Magnetic builder magnetic design software, inductor and. Planar e cores offer ease of assembly, consistent results and a low profile. Planar inductors can be overlapped on multilayer boards to design planar transformers on the printed circuit board. 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 design software intellisuite of intellisense software corp. Electrical engineering stack exchange is a question. Ferroxcube 2 exploded view of a planar transformer.
Coilcraft planar prototyping kit rf chip inductors. 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. Ss rscis on crics sabrie smana rehep selimaiss 241515 olume 21. 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. The custom ic design tools of cadence design systems and. In this effect we create a software program dedicate to dc inductance calculation and to layout optimization for spiral inductors. 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. 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.
Pier b online planar inductor design for high power. The dc resistance of the inductor must be less than 0. Planars commitment to high quality, leadingedge display technology is unparalleled. Figure 8 shows a fifthorder lowpass filter with twolayercoupled planar spiral inductors using the new calculation forthe design of this filter. The authors present a systematic study of the modelling, design, and fabrication of planar spiral inductors implemented in a high speed 0. Inductance calculation and layout optimization for planar. Microfabrication of planar inductors fo r high frequency dcdc power converters 121 a b c fig. Spiral type planar inductors are widely used in the design of power ampli.
Optimum inductor, capacitor and transformer synthesis. Decrease the time used to generate planar transformers dramatically using this tool. Optimum inductor, capacitor and transformer synthesis using. Umc jun hong ou jijun hong ou, jiwei hsu tim cheng david. Characterization and modeling of planar spiral inductors and pad stack parasitic effects john capwell. 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.
Design and modeling of a square planar inductor for a push pull converter article pdf available in journal of electrical and electronics engineering 81. When you make these adjustments, repress the design output button to recalculate with the new values. Jun 27, 2008 examines how a planar inductor or transformer core could be made from a net tie component in altium designer. The litzopt program optimizes litz wire stranding design to minimize the cost or power loss, for transformers or inductors. Software for magnetics design here we present some design software you can download or run online. Dec 09, 2011 decrease the time used to generate planar transformers dramatically using this tool. In 1995, intusoft acquired the rights to the transformer and inductor spreadsheet, originally a dosbased program.
Ferroxcube software design tool sfdt 2010 assists design engineers in optimizing their magnetics components. Formulas layer design 14 design of planar power transformers. Frontend design synthesis software streamlines the model creation. Stanford microwave integrated circuits laboratory website. Magnetic builder is a magnetic design software to design magnetic component, inductor,transformer, coil, with different ferrite or powder core material. Magnetics has online design software for four specific applications. Planar cores, ferrite planar cores, software tool for designing. Topic 4 designing planar magnetics texas instruments. At maximum load, the average inductor current will be 3.
Unlike conventional wirewound inductive components windings of inductors based on planar cores are printed on pcb. Microfabrication of planar inductors for high frequency dc. Simulation and design of an integrated planar inductor. Getting started design of an inductor for a buck converter. This software uses a design algorithm intended to specify the smallest design package size for the given input. Design, simulation, and implementation of low profile microstrip spiral inductors for high. Planar spiral air coil, planar inductor, design and calculations based on the harold a. 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.
Examines how a planar inductor or transformer core could be made from a net tie component in altium designer. Strategies for optimizing planar design are presented, and illustrated. 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. A bh loop characterizes the useful region of operation of a magnetic component. The apparent power, pt, of an inductor is the va of the inductor. This tool is based on the microsoft excel application package, you will need microsoft excel 2007 or newer to use this tool.
Find the perfect coupled inductor for sepic, zeta, or other applications. Microfabrication of planar inductors for high frequency. The first approximation is based on a modification of an expression developed by wheeler. Characterization and modeling of planar spiral inductors and.
1541 837 1011 918 336 1088 126 1272 118 1622 1230 1569 984 244 922 1147 1434 1264 584 1287 756 509 1272 331 694 329 1281 1491 934 432 927 1049 70 939 1333 663