Choke design, high powerharmonic filter design, power factor harmonic filter design, input inductor design, dc link reactor design, dc link filter. Pfcvs pin and input voltage level sensed via pfczcd pin. The resultant magnetic package is about the same volume as a standard pfc inductor but in a lower profile that aids system packaging, thermal flow and noise shielding. Apr 22, 2020 in contrast, using totem pole pfc design, there is no ground line and the circuit cant sample the current similarly as in traditional pfc. Ccm pfc boost converter design 8 design note dn 201 v1. Learn the calculations and considerations required to design an efficient pfc choke inductor. Here is an example of using kool mu in the pfc boost design. Similar coupled inductor concepts have been extended to interleaved. Pfc inductors, energy storage filter inductors, reactors produce selection download core selection software all along, the theoretical calculations and relatively complex magnetic materials, magnetic materials and electronic components in the circuit, but a considerable proportion.
The dual phase interleaved pfc software implements three compensators for voltage, current and load balancing. Online tool makes calculations easy for pfc inductors electronic. The design of an ac inductor is quite similar to that of a transformer. The application note an1106, power factor correction in power conversion applications using the dspic dsc ds01106, describes the digital implementation of a singlestage pfc using a dspic digital signal controller dsc. For an example of complete power stage design see the schematic of 300w active ccm pfc preregulator. 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.
How to design an efficient power factor correction pfc circuit ti. This online calculator will provide you with basic power relationship for the boost converter design. Additionally, the tool can help in finding an optimum inductor for a particular design problem. Oct 17, 2016 design of high power1 kw and above acdc converters featuring power factor correction pfc is challenging task with issues like ripple currents in input power line, inrush current at startup, switching high currents at inductive load, electro magnetic interference emi, current balancing in polyphase topology, fast reaction on load change, efficient protection, and many others. An9091 boost pfc inductor design guide for pfc spm series. Design of a power factor boost inductor, commonly referred to as a pfc choke.
The design kit features the ir1150 pfc for acdc pfc and is a small, 1. Software for magnetics design here we present some design software you can download or run online. Power factor correct pfc basics and design considerations. Pfc inductor and input line current waveforms in the three different operating modes. The l4984d is a currentmode pfc controller operating with linemodulated fixedofftime lmfot control. High efficiency ccm bridgeless totem pole pfc design using. To achieve this, the effects of the loads reactance needs to be canceled. This field allow to modify the number of strands used to make the turns. Quickly generate winding suggestions for pfc chokes and dcdc inductors learn more. For example, critical conduction mode operation and quasisquarewave mode operation in singlephase boost power factor correction pfc circuit are both variable switching frequency cases 6, 7. In fact, the input bridge and additional components such as emi filter generally already exist in most power converters. The software developed for the ipfc design is highly flexible, so it can be customized and configured to meet the needs of the specific application. This reference design highlights the motivation, operating principle and design considerations of bridgeless totem pole pfc btppfc using gan enhancement mode hemt ehemt. Ultrafast simulation expedites accurate smps design.
Their waveforms must be identical, though scaled by the effective input resistance of the pfc, by ohms law. One practical design would suggest 12a current ratings. The objective is to design the currentvoltage regulators using the smartctrl software. The pfc design tool was created as a design tool, to assist you in your application designs of. Inductor design two different types of core materials are commonly used for the inductor in a switching regulator powder cores and ferrite cores. Digital control in high power acdc converters with pfc. Design inductor having a given inductance l, which carries worstcase current imax without saturating, and which has a given winding resistance r, or, equivalently, exhibits a worstcase copper loss of. In reality, the current of course reaches zero near input voltage zero crossing. For totem pole pfc, there are several methods to sample the inductor current. Bidirectional interleaved ccm totem pole bridgeless pfc.
For example flyback transformers, boost or buck inductors, hysteretic constantcurrent inductors etc. Getting started design of an inductor for a buck converter. A power factor corrected load appears resistive to its source. Boost pfc converter control loop design psim software. 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. The inductor selection is still extremely custom based upon the circuit designers choices of operating mode, frequency range, maximum output power. Interleaved power factor correction ipfc converter. The program accepts user defined design requirements in terms of required inductance, dc. Poweresim is an online design resource for designing power supply circuits which includes.
The calculated inductance for this design was roughly 1 mh. Now we will look at an example design to show how to tackle emi in a 50hz, 220vac input ac offline power supply used for an automotive onboard charger used in an ev. Design inputs include dc current, ripple current, full load and no load inductances, and more. The results can also be downloaded for closer analysis. Analysis and design of coupled inductors for twophase. Totempole bridgeless pfc design using mc56f82748, design reference manual, rev. Designing interleaved power factor correction digikey. Pfc boost converter design incorporating continuous conduction mode ccm. The litzopt program optimizes litz wire stranding design to minimize the cost or power loss, for transformers or inductors. Micrometals inductor design tool micrometals arnold.
Pfc boost design kool mu materials low loss and relatively high saturation level 10,500 gauss make it excellent for use in power factor correction circuits pfc. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. Ferrite magnetic design tool the mdt software allows applicationrelated parameters to be calculated for all available epcos ferrite cores and or materials. The mdt software allows applicationrelated parameters to be calculated for all available epcos ferrite cores and or materials. When you make these adjustments, repress the design output button to recalculate with the new values. Understanding inductor designs for converters july 02, 2015 by editorial team a handy technical article demonstrating filter inductor design for boost converters, design of the coupled inductor for a twooutput forward converter, and the design of flyback transformer in continuous conduction mode.
Pfc boost converter design guide infineon technologies. The apparent power, pt, of an inductor is the va of the inductor. Boost pfc converter control loop design 4 boost pfc converter control loop design tutorial v2. Each cad and any associated text, image or data is in no way sponsored by or affiliated with any company, organization or realworld item, product, or good it may purport to portray. This page deals purely with inductors or transformers which are intended to store energy or act as dc chokes. Improved pfc boost choke using a quasiplanar winding. The hardware and software available with this reference design accelerates time to market.
Unshielded power inductors like wepd2 can be used for uncritical applications or for low. It provides access to their digitized material data including their graphical representations. The micrometals inductor design calculator allows users to log in and select from two different inductor applications. Interleaved power factor correction ipfc using the dspic dsc. Capacitors shunt noise current away from a load while inductors block or reduce the noise. Do not route any conductor tracks under the component and do not place any circuit boards directly above the component, as this could give rise to coupling via the air gap remaining. The user manual of the software contains a detailed description of all functions.
How to design an efficient power factor correction pfc. But if we want to get high efficient pfc circuit, first we should know how to design efficient pfc choke inductor because the consumption in the pfc choke inductor is very important. A typical singlephase boost pfc converter is a relatively simple design that combines a bridge rectifier, inductor, diode, switch, and output capacitor figure 2. Pfc boost converter design guide application note 6 revision1. Essentially, an emi filter is made up of two basic types of componentscapacitors and inductors. Design considerations of digital controlled totem pole pfc. Coilcraft design tools powerful web tools to help you find the best parts and optimize your designs. Magnetics designer produces a complete transformer or inductor design based upon electrical specifications, including a winding sheet report and a spicecompatible model with parasitics. This reference design provides an easy method to evaluate the power, and features of smps dspic digital signal controllers for an interleaved power factor correction application. The pfc design tool was created as a design tool, to assist you in.
Universal design kit and online pfc design tool for faster pfc designs with the ir1150 pfc control ic. Power factor correction pfc shapes the input current of the power supply. The simplest type is called a firstorder filter consisting of just a single reactive component. Normally, the power factor correction control loop obtains inductor current information using a sense resistor on the input bus with differential inputs to a current.
The on time is regulated and set by ic internal digital regulator according to output power sensed via. Generally, these single component filters are not very. Micrometals inductor design software is a flexible userfriendly engineering tool that is intended to assist in the selection of powder cores as well as analysis of existing designs, software is webbased and free to access for registered users. The inductor rms current and the corresponding copper loss are.
A new modeling approach for analyzing coupled inductors was proposed and a novel canonical symmetrical circuit model was developed in 3. 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. Inductor design featuring magnetics kool m, mpp, high flux, 75 series, xflux, and kool m max 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. In contrast, using totem pole pfc design, there is no ground line and the circuit cant sample the current similarly as in traditional pfc. A pfc inductor is typically designed to adjust the value of power factor to make it unity. A 3kw btppfc design example using gan systems 650v gan ehemt is presented in detail.
Totempole bridgeless pfc topology and features power factor correction control scheme is widely adopted for power conversion of acdc application. One reason pfc circuits can be difficult to design is that engineers must fully understand the pfc inductor s operating characteristics and its effect on the pfc circuit as design criteria changes. To make the design process easier the inductor was designed by cooper electronics part number ctx16. Ucc38050 100w critical conduction pfc reference design rev. Here are the parameters input 85 to 250v out put 380 vdc fs 100khz out put power 600 watts i want to use sendust cs508060 toroidal core. Optimize power factor correction inductors power electronics. Understanding inductor designs for converters technical. One reason pfc circuits can be difficult to design is that engineers must fully understand the pfc inductors operating characteristics and its effect on the pfc circuit as design criteria changes. The user can model the losses and temperature of a single predefined inductor. 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. Ccm totem pole ttpl bridgeless power factor correction pfc power stage using a c2000 microcontroller mcu and lmg3410r070. Many tutorials incorrectly state that it never reaches zero. Jun 27, 2017 but if we want to get high efficient pfc circuit, first we should know how to design efficient pfc choke inductor because the consumption in the pfc choke inductor is very important.
The inductor design software allows engineers to choose from several topologies like power factor correction or ac inductor, collects all the pertinent electrical. Inductor loss reduction for interleaved pfc phases. Design of high power1 kw and above acdc converters featuring power factor correction pfc is challenging task with issues like ripple currents in input power line, inrush current at startup, switching high currents at inductive load, electro magnetic interference emi, current balancing in polyphase topology, fast reaction on load change, efficient protection, and many others. How to improve emc in a pfc circuit for electric vehicles. L1 v out 2 v inmin v inmin 2 2 fs vout pout in this design an auxiliary winding was taken off the boost inductor to power the ucc38050 pfm. Micrometals inductor design tool micrometals arnold powder. Optimizing pfc circuits for a particular application is easily performed with the pl product, which is a user driven software for design engineers. Inductor design is crucial to achieving the objective of power factor correction. Bidirectional interleaved ccm totem pole bridgeless pfc reference design using c2000 mcu design guide. 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 click to try poweresim. The software will change dc resistance and copper losses accordingly.
It should be designed optimally to pass the harmonic guideline. Ultrafast simulation expedites accurate smps design power. Online design tool programs interleaved pfc power electronics. This power topology is capable of bidirectional power flow pfc and gridtied inverter and it uses gallium nitride gan devices, which enables higher efficiency and reduction in size of the power supply. In continuous conduction mode ccm power factor correction pfc circuits, the inductor current does not reach zero during most switching cycles. Practical design and evaluation of an 800 w pfc boost converter. Due to the separation of ac and dc currents, a higher efficiency unit can be made in the same volume.
This implies that the input current must differ from the sinusoidal source voltage by only a scaling factor. Magnetic builder magnetic design software, inductor and. A proprietary lmfot modulator allows fixedfrequency operation for boost pfc converters as long as they are operated in ccm continuous conduction mode. An attention matter on security i undertake use with this product, and it is paid attention enough, and please design an attention matter safely. Featuring magnetics kool m, mpp, high flux, 75 series, xflux, and kool m max 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. If there is no dc flux in the core, the design calculations are straightforward.
Ferrite magnetic design tool tdk electronics tdk europe. In some application notes, term ni ampereturn is used against core al value and in some notes li2 milihenryampere squared is used against core al value. Use a magnetically shielded power inductor if at all possible. First one is find out the required minimum inductance, l minimum. This application note focuses on the design of an interleaved power factor correction ipfc converter. The program accepts user defined design requirements in terms of required inductance, dc resistance, dc bias current and applied ac voltage. 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. So design efficient choke inductor, we should do three things. Ucc38050 100w critical conduction pfc reference design.