I find really annoying to shut down my mac and then change my partition. This download was checked by our antivirus and was rated as virus free. Placing a transformer with a coupled inductor model is probably the simplest and quickest way of adding a coupled inductor to your source schematic. Pspice by cadence design systems, inc is a native analog and mixedsignal circuit simulator. How to create a transformer using ltspice creating web pages in. To implement the uncoupled inductors in the design, the coupled inductor was simply replaced with two inductors on the same pwb. A couple things to remember about transformers and spice in general. This application note covers the following topics explaining the use of inductor coupling. Other interesting mac alternatives to pspice are ltspice free, qucs free, open source, icircuit paid and ngspice free, open source. The new inductor coupling symbols may be used to couple up to six independent inductors on a schematic. All resistors, capacitors, and inductors are in the library labeled analog. The dotted terminal of a inductor in pspice is at the. As expected, both circuits operated in a nearly identical.
Here is the simple approach to simulate a transformer in ltspice iv. Anyway, if you were looking for pspice for mac, you can try these. Coupled inductors model online documentation for altium. Transformers are a key component in many switching regulator designs, providing an isolation barrier in dangerous high power systems, allowing very high stepdown or stepup ratios in high voltage designs and with an extra winding easily accommodating multiple or inverting outputs.
Adding spice models to ltspice adam siembida personal. The last number is called mutual coupling coefficient and can be between 0 and 1. Using transformers in ltspiceswitcher cad iii analog devices. Users may prepare netlists with a text editor, or derive them from a circuit diagram using a thirdparty schematiccapture application. For transformers of normal geometry, the coupling is usually 1. Folder details cmp contains standard model data for passive components, diodes, transistors, fets etc sub contains subcircuit data. Draft an inductor for each transformer winding couple them using a single mutual inductance k statement via a spice directive. The source resistance is 5 ohms and the load resistance is 5 ohms. A multiplewinding magnetics model having directly measurable. If that doesnt suit you, our users have ranked 28 alternatives to pspice and ten of them are available for mac so hopefully you can find a. Type electronic design automation license freeware. In this note, the optocoupler will be modeled by a currentcontrolled current source.
Introduction to spice models of variablecontrollable capacitors and inductors duration. Their nodes are designated by small integers, and polarity marks have been added. Ngspice users manual version 31 describes ngspice release version holger vogt, marcel hendrix, paolo nenzi september 22nd, 2019. If that doesnt suit you, our users have ranked 40 alternatives to orcad all.
For example, topleft circuit in figure 1, simulates a 20 turn inductor l3 on p42 pot core material grade 3c85. Effects of leakage inductance and coupled inductors on cross regulation of forward converters are described in 57, and cross regulation in the discontinuous conduction mode flyback converter is analyzed in 8,9. Pspice student kostenlos windowsversion herunterladen. The most popular mac alternative is circuit simulator, which is both free and. November 8 1993 abstract the nonideal inductor exhibits both resonance. Pspice orcad simulation and tutorial voltage divider. An optocoupler model typically, an optocoupler is an opticallycoupled isolator that uses a gaas led as a light source and a bipolar npn phototransistor as a receiver. Coilcraft msc1278 coupled inductors for sepic and other. Pspice student is an analog circuit simulator that was specially designed for electrical engineering students in need of simulating circuits and of solving circuitsrelated calculations. Design of ac resonant inductors using area product method. The result is the most powerful and easiest to use circuit simulator available for personal computers. This application note covers the following topics explaining the use of inductor coupling symbols in a capture pspice project. An optocoupler model typically, an optocoupler is an optically coupled isolator that uses a gaas led as a light source and a bipolar npn phototransistor as a receiver. Using coupled inductors and inductor cores cadence design yumpu.
Introduction to spice models of variablecontrollable capacitors and inductors. Adding spice models to ltspice adam siembida personal webpage. Transformers and coupled inductors are key components in many switching regulator designs to include flyback, forward and sepic. The polarity information is passed to pspice by the order of the nodes. Sullivan found in ieee industry applications society annual meeting, sept. Users may prepare netlists with a text editor, or derive them from a circuit.
Effects of leakage inductance and coupled inductors on cross regulation of forward converters are described in 57, and cross regulation in the discontinuous conduction mode flyback. The inductor terminals have labellings of 1 and 2, but they exist. For n inductors coupled together with a k statement, each inductor l1 through ln is divided into two parts, a completely non coupled leakage inductance equal to 1klx where lx is the particular inductor in question and a completely coupled mutual inductance equal to klx. The most popular mac alternative is circuit simulator, which is both free and open source. Shielded coupled power inductors rf chip inductors, power. Mutual inductance and transformer circuits with ltspice iv. Spice model of coupled inductor electrical engineering. Buck converter, instantaneous power dissipation, efficiency.
Pspice software for mac software free download pspice. It is verified experimentally for the inductors of a 30w converter switched at 200 khz. Analog devices parts to ensure ltspice supports their combined product line. Different design tools use different versions of spice, hence, part manufacturers will often have the spice file for their part available in a couple different formats. Anyway, if you were looking for pspice for mac, you can try these applications, as these circuit simulators are also quite handy and have similar functions and features. Aug 21, 2011 different design tools use different versions of spice, hence, part manufacturers will often have the spice file for their part available in a couple different formats. Ltspice is freeware computer software implementing a spice electronic circuit simulator. It is likely that the old url for this pspice tutorial will disappear on august 31, 2015. The methodology is demonstrated for the coupled inductors in the flyback topology with large ac flux. Apr 26, 2019 pspice is not available for mac but there are some alternatives that runs on macos with similar functionality. Since the voltages and currents in the circuit will vary as a function of time, regardless of the type of independent source, we will always use the transient analysis. The most popular mac alternative is kicad, which is both free and open source. For 2 coupled elements, 2 k elements are required, for 3 coupled elements, 4 k elements are required.
In this example, we will design a simple inductive wireless power system. After youve downloaded crossover check out our youtube tutorial video to the left, or visit. Simulation model of commonmode chokes for highpower applications a. Ltspice is node unlimited, incredibly easy to learn and can be used to simulate most of the analogue components from linear technology as well as discrete and passive components. Cadence pspice technology offers more than 33,000 models covering various types of devices that are included in the pspice software. An3005 modeling phototransistor optocouplers using pspice. The dotted terminal of a inductor in pspice is at the first pin and that is on the left side when the inductor is placed on schematic. First, place a glaplace element part into the model circuit schematic and connect as shown in the schematic below. The inductor terminals have labellings of 1 and 2, but they exist for no good reason an inductor is nothing more than a coil of wire. Pspice simulation click the download free trial button above and get a 14day, fullyfunctional trial of crossover. The impedance is given by the inverse of the xform, or xform 1zs. This uses an aladdin flexnet usb key, provided with the orcad software package.
Ltspice preferred method is to define a separate inductor for each. Implementing models in pspice rf chip inductors, power. I am doing pspice cad by simple schematic generationnot using netlist, i need to apply coupling and for this i need coupling component, but i do not know how to use that in schematic, i mean in netlist we have k l1 l2 but when i try to do that directly in cad i get part l1 has no l1 property part l2 has no l1 property can somebody please. In the above figure two inductors are coupled by a coefficient of coupling, k. You must set the selfinductance values l1 and l2 and the.
Download pspice for free and get all the cadence pspice models. Pspice is not available for mac but there are some alternatives that runs on macos with similar functionality. See selecting inductors for sepic and sepic inductor selector tool. However, should you wish to place individual inductors in the schematic design and couple them, the required information for the spice netlist can be readily supplied through the use of a text frame. Orcad all products is not available for mac but there are some alternatives that runs on macos with similar functionality. Spice model of inductor including stray capacitances. K1 l1 l2 l3 1 the last entry in the k statement is the coupling coefficient, which can vary between 0 and 1, where 1 represents no leaka. Running orcad capture on a mac, using vmware fusion and windows vista. Lossless resonant circuits tuned to same frequency and condition for maximum power transfer. Mar 02, 2010 all resistors, capacitors, and inductors are in the library labeled analog. Loosely coupled inductors, designed for sepic applications. But all coupled inductors must be coupled to all other coupled inductors via a k element. There are three parameter values that must be set when using a pair of coupled inductors.
November 8 1993 abstract the nonideal inductor exhibits both resonance and nonlinear current characteristics. The dot is always next to the first pin to be netlisted. The glaplace element is used in pspice to describe a frequencydependent impedance. In this paper, a three phase interleaved boost converter using coolmos and silicon carbide sic. For n inductors coupled together with a k statement, each inductor l1 through ln is. Pspice software for mac the boingo software for mac for mac os v. I find really annoying to shut down my mac and then change my partition disk to windows and then use pspice. Pspice student is sometimes distributed under different names, such as pspice student thinstalled. Transformers and coupled inductors are key components in many.
The inductor values are specified as number of turns. Inductive wireless power transfer lossless coils with. If that doesnt suit you, our users have ranked 28 alternatives to pspice and ten of them are available for mac so hopefully you can find a suitable replacement. This ltspice tutorial will explain how to use ltspice, the free circuit simulation package from linear technology corporation ltc. We also boast an active community focused on purchasing decisions and technical aspects of the iphone, ipod, ipad, and mac platforms. By employing directly coupled inductors for ibc, the overall current ripple can be effectively reduced which increases the lifetime of fuel cells. For n inductors coupled together with a k statement, each inductor l1 through ln is divided into two parts, a completely noncoupled leakage inductance equal. The corresponding ltspice iv schematic is shown in figure 2. You model a coupled inductor in spice and other simulators by using a component called k. The coupling value is the coefficient of mutual coupling and must have a value between 0 and 1. However, should you wish to place individual inductors in. By employing directly coupled inductors for ibc, the overall current ripple can be effectively reduced which increases. Jan 24, 2009 mac basics, help and buying advice macrumors attracts a broad audience of both consumers and professionals interested in the latest technologies and products.
A comparison of threephase uncoupled and directly coupled. Simulation model of commonmode chokes for highpower. I am doing pspice cad by simple schematic generationnot using netlist, i need to apply coupling and for this i need coupling component, but i do not know how to use that in schematic, i mean in netlist we have k l1 l2 but when i try to do that directly in cad i get part l1 has no l1 property part l2 has no l1 property can somebody please tell me the real way to use this component. In figure 3b, l1 occupies the space of the coupled inductor, and l2 is in the upper right corner. I tried the recommendations in that thread but was not successful. Macspice then builds a numerical model of the circuit and analyses this. I am doing pspice cad by simple schematic generationnot using netlist, i need to apply coupling and for this i need coupling component, but i do not know how to use that in schematic, i mean in netlist we. Shielded coupled inductors for flyback, sepic, cuk, zeta and other applications. Thus, there must be 2n1 of these blocks if there are n coupled inductors.
If that doesnt suit you, our users have ranked 40 alternatives to orcad all products and ten of them are available for mac so hopefully you can find a suitable replacement. Hi everyone, i recently tried to install pspice on my mac following an older thread from about four years ago. Macspice requires a textfile description of the circuit as input. Simulation of circuits with inductors and capacitors. The best format to use is the spice3 model, however the pspice model will usually work in ltspice as well. Ltspice provides macromodels for most of analog devices. The coupled inductors are passed to the device as parameters, as is the coupling coefficient between the two inductors. Pspice uses the coupling coefficient to describe the coupled coils, thus we find k from the dot convention for the coupling is related to the direction in which the inductors are connected. Every loop containing just a source and inductor such as a transformer primary circuit. Simple steps for simulating transformers analog devices.
302 437 780 164 1340 887 854 735 1367 708 956 427 414 1390 1261 763 595 156 1130 1487 670 856 1478 372 1131 1048 285 390 729 933 845 769 1281 394 979 1389 126 1397 234 1135 1352 601 1457