Vishays ihlp core loss calculator is a free tool that assists designers in selecting the proper ihlp inductor based on the operating conditions of their circuit. The calculator assumes that during the normal load the inductor is in continuous mode, meaning that the inductor never fully discharges its current. In this project, we will show how to build a switch mode power supply circuit with a mc34063 chip. An inductor is also named as a reactor, coil and choke. An920d theory and applications of the mc34063 and a78s40.
These devices primarily consist of an internal temperaturecompensated reference, a comparator, an oscillator, a pwm controller with active current limiting, a driver, and a highcurrent output switch. Inductors used in switch mode power supplies and buck or boost topologies are normally driven with pulses of voltage. Inductor colour code calculator this calculator converts colour codes to inductor values. Calculate and find the best inductor for your switcher topology. If you ever worked with the mc34063 switching controller, you know what a pain it is to calculate all the part values. Mc34063a development aid this is a simpleminded design tool that allows you to calculate component values mc34063a simple switcher chip. It displays the appropriate scematic diagram stepup, stepdown, or inverting and checks for current and voltage limits. An inductor is used to store energy in the form of a magnetic field.
Inductor energy calculator learning about electronics. I would ask a question about calculating tap position in a toroidal core to use in boost converter made around mc34063 and an external power mosfet with gate discharge circuitry. And here is the schematic diagram this circuit can deliver about 1. Download mc34063 universal calculator a complete calculation utility for the mc34063 switching controller that enables you to determine all its parameters and view a schematic circuit representation. To design a polarity reversal circuit with a negative sign in front of the. The following design guide may also be downloaded as a pdf. The voltage spike shown above is what happens when you select an 50u inductor which. The rectangle loop is often found in windings for transformers or ferrite cores. Inductor voltage calculator learning about electronics. It is a switch mode power supply, high efficiencies of over 90%. Coilcraft design tools powerful web tools to help you find the best parts and optimize your designs. Despite their small size quite useful programs languages spanish but many units are universal because you can deal hopefully this kind of program on turkish those are written in the uc384x series ir2153 and mc34063 integrated the basis of calculation of all of the different programs out can be made. Our brief is to design a boost converter that converts 5v to 12v and supplies a load of 1a.
The inductor energy calculator calculates the energy stored in an inductor, based on the size of the inductance of the inductor and the current going through it, according to the above formula. It is based on the general purpose boost converter, the lt3757 lt3757 datasheet. Mc34063 boost with external npn transistor help all. A basic building block for a geiger counter nixie tube. Mc34063 buck converter efficiency and transistor heating. Dc to dc converter circuit 12 volt input 15 volt 2 amp converter circuit mc34063 output power raises stepupdown and inverting can function as integrated switching is used dc dc converter circuit general characteristics.
Boost with mc34063 electrical engineering stack exchange. Hello, i made this buck converter with mc34063 ic to charge my phone from a solar battery. Above we have the circuit configuration which we can add our pnp transistor on, im using the tip42c. Now, ive gotten all the values of the parts save one the inductor. Mc34063 calculator online stepdown, stepup, inverter. Yotube video tutorial on mc34063 33063 dave jones eevblog you tube video takes you stepbystep through designing a dcdc converter using the venerable mc34063. Here is a set of notes on the mc34063 smps controller chip. If your application will use a subset of this range, or you intend to use the part out of specification, adjust your temperature range so output accuracy is correct. The one thing that doesnt seem to work correctly is the isns wire when compared to the real mc34063 when you have a voltage divider on it download my configuration here. This inductor voltage calculator calculates the voltage across an inductor based on the inductance, l, of the inductor and the current that flows across the inductor. This is 12v stable battery voltage regulator circuit.
Advanced assembly content information center news videos download center. Inductor and inductance calculation what is inductor. Ltspice is a linear technology version of spice and cant. If the design goal is to use a minimum inductance value, let il 2ilavg. If we ignore the damping effects of the inductor resistance and load, we can approximate the charging time and peak current with equation 7. How to build a switch mode power supply circuit with an mc34063. The simplest thing you can put there is a resistor to ground. Voltage blue, current though diode green, current though inductor red. Diameter and length of inductor are entered in millimetres along with the number of turns. Several converter design examples and numerous applications circuits with test data are included. Free online engineering calculator javascript to calculate the number of winding turns required to achieve a desired inductance with ferrite and iron powder toroidal cores.
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. As you can think, that model is not available in the ltspice. I am curious on what do you use to simulate the circuit and where do you get the mc34063 simulation model. An undersized inductor could be a source of your problem.
Using that calculator, if you change the value of the small capacitor from lets say 100pf to 10pf, the size of the inductor goes from say, 100uh to 15uh. Yotube video tutorial on mc3406333063 dave jones eevblog you tube video takes you stepbystep through designing a dcdc converter using the venerable mc34063. Mc34063 boost calculator the device you select will automatically populate the temperature range fields. This tool will simulate the losses in the inductor, including core and. The inductor is a common school use transformer 5000 turn coil, with wire diameter about 0. An inductor increases in current linearly as a ramp as a function of time when the voltage across it is constant. The formula which calculates the inductor voltage is v ldidt, where v is the voltage across the inductor, l is the inductance of the inductor, and didt is the derivative of the. The peak inductor current with respect to output current is. With reference to texas instruments mc34063a datasheet. Operating from 3 v to 40 v frequency operation to 100 khz active current limiting description the mc34063ae series is a monolithic control. Having figured out the heart was a switching reg mc34063, i soon discovered that it was a generic reference design the manufacturer had used. Javascript calculator for a step up voltage converter. I am not sure about the results of this coil inductance calculator, by using the following parameters.
Application of the mc34063 switching regulator rev. Its normally required for the construction of dc to dc converters. Low voltage power supply with the mc34063 changpuak. It support led driver design, pfc, notebook adaptor, phone. Air cored inductor calculator m0ukd amateur radio blog. Commonly, this programs installer has the following filename. The calculator diy dcdc boost calculator adafruit learning. The mc33063a and mc34063a devices are easytouse ics containing all the primary circuitry needed for building simple dcdc converters. An920d theory and applications of the mc34063 and a78s40 switching regulator control circuits this paper describes in detail the principle of operation of the mc34063 and. Although the input voltage change between 5v and v. Stanford microwave integrated circuits laboratory website. It can provide switched power conversion at currents of a few hundred milliamps to over an amp depending on the configuration. This calculator is useful when making antenna matching units, low pass filters, crystal sets, antenna traps, resonant circuits or anywhere where an air cored single layer inductor is required. Mc34063a, mc33063a, sc34063a, sc33063a, ncv33063a inverting regulator buck, boost, switching 1.
A calculator for rolling your own basic dcdc boost with a microcontroller. In this part well look at adding in an external transistor so that we can bypass the 1. Below is a worked example using the theory outlined above. A switch mode power supply is also called a switched mode power supply or a switching mode power supply. Calculation program mc34063 ir2153 uc384x electronics. The mc34063 series is a monolithic control circuit containing all the active functions required for dc to dc converters. A switch mode power supply is a power supply that regulates a certain power. Tapped coil for mc34063 with external mosfet electronics. Type the inductance in the box below and select the units and optionally the tolerance from the dropdown boxes. I found one model from on semiconductors web for spice, and i had imported it into ltspice, but i have some problems.
A user enters the inductance, l, and the current, i, and the result will automatically be calculated and shown. Find the perfect coupled inductor for sepic, zeta, or other applications. The latest version of mc34063 universal calculator can be installed on pcs running windows xpvista7810, 32bit. Mc34063 has a high current output switch, pulse width modulation pwm controller with current limiting, compensated reference of internal temperature, a comparator and a driver. Today, i am going to share a detailed introduction to mc34063. It is a two terminal electrical component used in various electrical and electronic circuits. If you try to pump 200 watts into this, the inductor will dissipate 50 percent or 100 watts and will most likely fail in short time. For this simple calculator, enter in the freqency, voltage ranges and current ranges and the duty cycle, inductor and current requirements will be displayed. Parameter name, symbol, unit, the mc34063 motorola inc. Dcdc converter control circuits datasheet production data features output switch current in excess of 1. Our website provides a free download of mc34063 universal calculator 1. Familycase size series please, choose inductance from the radio group. High voltage power supply with the mc34063 changpuak.
Mc34063 universal calculator free download windows version. Mc34063 boost with external npn transistor help home. For other inquiries regarding inductor design with magnetics ferrite cores, contact our applications engineers or submit a custom inductor design request. These devices consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an. How to build a switch mode power supply circuit with an. Heres a datasheet for the mc34063c from silicon link an online calculator is here and a typical breadboard below.