Magnetics designer produces a complete transformer or inductor design based upon electrical specifications, including a winding sheet report and a spicecompatible model with parasitics. Updated magnetics inductor design tool now available. The micrometals inductor design calculator allows users to log in and select from two different inductor applications. Transformer design software integrated engineering software. As this name implies, most of the current flowing through the inductor is dc, with some amount of ac ripple current noted as idelta included as well figure 1. How to design a coil for a specific inductance that you need, including how to calculate the inductance and where to find an online inductance calculator. The inductor design software allows engineers to choose from several topologies like power factor correction or ac inductor, collects all the pertinent electrical, thermal and mechanical inputs, and returns a wide range of solutions that can be sorted based upon key criteria. Analysis, design, and optimization of spiral inductors and tra. Multilayer air core inductor calculator enter l, d, l and wire gauge all four are required to calculate multilayer inductor data. Inductor design two different types of core materials are commonly used for the inductor in a switching regulator powder cores and ferrite cores. These numbers were developed by core suppliers to summarize dimensional and electrical properties of ccores and are listed in their catalogs.
N number of turns, d inductor coil diameter, l inductor coil length. 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. Inductors are simple in appearance but behind those seemingly basic designs are multiple iterations of calculations, considerations and tradeoff between performance, price and longevity. A database with thousands of cores, wide variety of materials and wire is included, including a nonlinear saturable core spice model.
This page deals purely with inductors or transformers which are intended to store energy or act as dc chokes. For instance, the user specifies a group of cores from which the program then finds the optimum one. For an iron core, a rough number to use is 100 though it really varies depending on the alloy. The output inductor design tool was created as a design tool, to assist you in your application designs of. As this name implies, most of the current flowing through the inductor is dc, with some amount of ac ripple. Wirewound inductors, which allow relative motion of conductors due to electromagnetic forces, will exhibit fm distortion by the process of reactance modulation. The following is a design tool which calculates the inductance of an air core inductor. Both installer and portable versions of this software are available on its website. Preferred toroid winding technique fully wound or single layer. If calculating the area using the radius then include the core s radius plus the radius of the wire.
Coil32 is a free inductance calculator for windows. Jun 25, 2019 designing your own inductor inductor design is an ee specialty within a specialty. Magnetic builder magnetic design software, inductor and. Ferrite magnetic design tool the mdt software allows applicationrelated parameters to be calculated for all available epcos ferrite cores and or materials. Design of inductors and high frequency transformers. The current load for power inductors can be calculated very accurately in terms of dc current load and ripple current load core losses using the manufacturers simulation software. As an approximation, the effective separation between the windings includes of the height of each winding, as. Filter design has always been a complex nuisance, but today with design software and online tools, you can quickly create just the filter you need. As a result the level of the inductor q gives a good indication of the overall performance of the component, and it is a factor that is widely used within rf design. When using an inductor in a circuit where the q or quality factor is important its. Updated magnetics inductor design tool now available acal bfi uk. A power electronics converter design requires a filter inductor. The most common design of variable inductor is having a movable ferrite core.
The inductance of an air core coil inductor can be also calculated using the below equation. Magamp core design, magnetic amplifiers, secondayr side regulator design, magnetic switch design. How to design a coil for specific inductance youtube. Learn how to wind your own inductor using thick copper wire for a low resistance coil.
Some engineers may be able to design their own coils when theyre simple, but its a waste of time in most cases. Getting started design of an inductor for a buck converter. Software for magnetics design here we present some design software you can download or run online. A passive filter with inductors and capacitors is very effective in controlling the bandwidth of a circuit, eliminating harmonics or unwanted intermodulation distortion and noise. Oct 31, 2016 how to design a coil for a specific inductance that you need, including how to calculate the inductance and where to find an online inductance calculator. Inductor design software 1 micrometals part number. Dont overlook inductors in your designs innovation. For example flyback transformers, boost or buck inductors, hysteretic constantcurrent inductors etc. At maximum load, the average inductor current will be 3. Design and fabrication of inductors for induction heat. The dc resistance of the inductor must be less than 0. Micrometals inductor design software has been updated on our new website with added features and topologies. Inductor analyzer allows engineers to quickly analyze wound core designs using any. Magnetics designer software makes transformer and inductor design easy.
It provides access to their digitized material data including their graphical representations. Call us 440 2380700 optimized program service, llc. The results can also be downloaded for closer analysis. W, smallest ratio 1016 comparing two cores with identical area products, ap, for the same design specification, the core with a minimum of window area will generate a minimum of fringing flux. Moving the core along the winding will increase or decrease the permeability which affects the inductance of the inductance. A typical design approach is to preselect the core shape. In transformer design, we need to insure that s core. Magnetics inductor design software is an aid to assist design engineers in selecting the optimum powder core for inductor applications, specifically in switchmode power supply smps output filters, also known as dc inductors. The same goes for ferrite which can have value anywhere from 20 to 5000 but if youre at a loss as to what to use then is a rough compromise. This program will automatically calculate and display. The litzopt program optimizes litz wire stranding design to minimize the cost or power loss, for transformers or inductors.
We must also check the % saturation curves found in thecore loss increase due to thermal aging text to verify that this core will be. Our computer software performs design and analysis for transformers and inductors. Ferroxcube software design tool sfdt 2010 assists design engineers in. Targeted to specific applications, each software package offers a core selection. New software for privacy reasons it is necessary for previous users to reregister. Cylindrical coil inductor design equations formulas calculator. The conductor used in these windings have no insulation so the core must be insulated, thus moving the contact on top of the turn will change the number of effective turns. The number of turns is calculated from faradays law, which states. Magnetic builder is a magnetic design software to design magnetic component, inductor,transformer, coil, with different ferrite or powder core material. The shapeopt page has more information, or you can proceed directly to run shapeopt online, or. Within single shot, it also could be hardened by a machined encircling inductor or a socalled encirclingnonencircling inductor. Inductor design calculator solving for inductance given wire coil number of turns, core material permeability, coil area and average coil length. The online calculator uses the wire diameter to determine its length and the possibility of fitting it in the inner diameter of the toroid.
The program operates on windows 95, 98, 2000, nt, xp, vista and windows 7,8 and 10. Magnetic materials and their operating flux levels are given in chapter 2. Lewis research center summary users of this program are relieved of most computational details, while maintaining control over most engineering decisions, in the design of toroidal transformers for use in parallel inverter circuitry. Getting started design of an inductor for a buck converter the design space is specified in the tabs core and winding. Note that when doing calculations for a coil with very thin wire as. This energy is 2 li2 stored as magnetic field energy, within the ferrite core. Find the perfect coupled inductor for sepic, zeta, or. Pronine electronics design multilayer air core inductor. Mpl henrys 89 this equation shows that inductance is dependent on the effective length of the magnetic path, which is the sum of the air gap length, lg, and the ratio of the core mean length to the material permeability, mplum. Inductor current ratings the current load for power inductors can be calculated very accurately in terms of dc current load and ripple current load core losses using the manufacturers simulation software.
Design of a power factor boost inductor, commonly referred to as a pfc choke. Ferrite magnetic design tool tdk electronics tdk europe. The program has additional plugins to calculate another manner of coils. The shapeopt page has more information, or you can proceed directly to run shapeopt online, or download the matlab program, shapeopt. The ac inductor like a transformer, must support the applied voltage, vac. Lecture 36 transformer and ac inductor odds and ends. Inductor design program inductor is a multifeatured design program for designing a wide range of inductive devices using a variety of gapping arrangements. A custom cad tool asitic is described, used for the analysis, design, and optimization of these structures.
Inductor design magnetics inductor design tool is an aid to assist design engineers in selecting the optimum powder core mpp, high flux, kool m, xflux, kool m max, and 75series for inductor applications, specifically switchmode power supply smps output filters, also known as dc inductors. Such numbers are available for more than 200 different c core sizes and configurations. Reluctance of the core legs is not shownit is so coupled inductor design 83 into each winding, tailing off from the center to the outer edges next to the core. The user will have the opportunity to select from five different inductor applications. We specialize in both books and software pertaining to magnetic component design and its application. Magnetics inductor design tool is an aid to assist design engineers in selecting the optimum powder core mpp, high flux, kool m, xflux. Core design considerations and how micrometals free inductor software makes choosing the right core easy. For an encircling inductor scanning or single shot, the current. The curve at the top of page 40 indicates the t106 will require 217 ampereturns to produce 1266. L2i max 2 b max 2 rk u 108 cm5 choose a core which is large enough to satisfy this inequality see appendix d for magnetics design tables. Since its multiplied by the rest of the formula, that means. Core vendors such as tdk, magnetics, philips, thomson, micrometals.
If calculating the area using the diameter then include the core s diameter plus the diameter of the wire. An inductor with certain inductance l and certain peak current i can be determined by the following calculation. The inductance of an iron core inductor carrying direct current and having an air gap may be expressed as. Another method of variable inductor design is to increase or decrease the number of turns through movable contact on top of the windings. Coil32 is a free coil inductor calculator, that allows calculating. There are just too many forms, magnetic core types, and winding configurations to know it all.
Dear all what is the optimal software package free software is recommended to design the ferrite core inductors, which can be used in the power converters. Vldt l p 2 u a r n mlt k w of cuwire intheprimary r pcu i r 1 b core p 2 l 2 the ac inductor total loss has two components wire i2r loss and core loss. Magnetics builder design magnetic inductor and transformer tool. The inductor design software allows engineers to choose from several. The area includes part of the coil, as shown in the diagram above. H where, n number of turns, d inductor coil diameter, l inductor coil length. Inductor q inductor quality factor electronics notes. H d diameter of the inductor coil inches l length of the indutor coil inches.
It is difficult to recommend one material over the other since the designer must take into consideration factors such as cost, volume, size and space limitations, and winding capabilities. You can easily design inductors using this application. The following approach can be chosen as a rough calculation. The analysis is applied to traditional square and polygon inductors and transformer structures, as well as to multilayer metal structures. We can enter micro henry, ohms, amperes, core shape, winding type, frequency, voltage, temperature and more settings. Using this free inductance calculator, you can calculate inductance of the following inductors. The value of bmax is chosen to be less than the worstcase saturation flux density bsat of the core material. 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. If s p s max then increase the size of chosen transformer core to meet thermal and electrical needs and specifications. The actual inductance at maximum output current that the inductor design will produce, expressed in mh if the core is at the. Micrometals inductor design tool micrometals arnold. Measurements taken over a frequency range from 100 mhz to 5 ghz show good. The shapeopt program optimizes the shape of an inductor winding to minimize winding losses, including adjusting the number of strands in a litz wire winding. Inductor design software optimized program service.
L is inductance in micro henrys, d is coil diameter in inches, l is coil length in inches, and n is number of turns. When designing inductors where there is a choice of cores, always pick the core with the smallest ratio. Micrometals inductor design tool micrometals arnold powder. Toroidal transformer design program with application to inverter circuitry by james a. Here you can see the formulas that the calculator uses to calculate the inductance. The previous version of the software will be available for a limited time.
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