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SMPS Switching Power Supply Design; Circuit Diagrams

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SMPS Switching Power Supply Design;SpinDiagrams LAZAR's POWER ELECTRONICS GUIDE SMPS SWITCHING POWER SUPPLY DESIGN BASICS: CIRCUITS, SCHEMATICS, ELECTRICAL ENGINEERING REFERENCE, SOFTWARE AND OTHER INFO <---------------------------------------------------------------------------------------------------------------------------> Home Tutorial Topologies SMPS diamond Thermal diamond Software PCB diamond Computer PSU UPSSpinTransformers Formulas EE Reference Inverters Generators Solar The electric energy is not normally used in the form in which it was produced or distributed. At the risk of stating the obvious, practically all electronic systems require some form of energy conversion. A device that transfers electric energy from a given source to a given load using electronic circuits is referred to as power supply unit (PSU). Of course, a PSU does not really supply power, it just converts it, so "converter" is a increasingly well-judged term for such a device. A typical using of a power supply is to convert utility AC voltage into a set of regulated DC voltages required for electronic equipment. There are variegated types of PSU depending on their mode of operation. Nowadays most PSUs are of SMPS type, which is the main subject of this site. WHAT IS IT? SMPS stands for switched mode power supply. It is an electronic device in which energy conversion and regulation is provided by power semiconductors that are continuously switching with upper frequency between "on" and "off" states. An output parameter (usually output voltage) is controlled by varying duty cycle, frequency or a phase shift of these transitions. HOW DOES IT WORK?. The energy spritz in any PSU is controlled by power semiconductors. However, in variegated systems they operate in variegated modes. In legacy systems they worked in linear mode and excessive power prodigal in a series transistor. When a semiconductor operates in switching mode, it can tenancy energy spritz with low losses: when a switch is "on", it has low voltage waif and will pass any current imposed on it; when it is "off", it blocks the spritz of current. As the result, in such an electronic device the power dissipation which is the product of voltage and current, can be relatively low in both states. That's why switch mode PSUs offer greater efficiency compared with linear ones. Such units are moreover smaller in size and lighter in weight due to the reduced size of passive components and lower heat generation. Higher efficiency and smaller size coupled with advancements in semiconductor technology and various energy efficiency regulations have made "switcher" the dominant type of PSU wideness practically the full spectrum of applications. Most PSU manufactured today for AC input applications moreover include flipside conversion stage- a power factor correcting (PFC) front end. There is a huge variety of well-constructed off-the-shelf power supplies and DC-DC modules on the market to meet most practical requirements and safety standards. Nevertheless, custom designs are still stuff washed-up when there is a need for special characteristics or an unusual form-factor, particularly for harsh environment military applications or avionics.In general, power converters can be classified into four types equal to the form of input and output voltages: AC to DC (also tabbed off-line DC power supply), DC to DC (voltage or current converter), AC to AC (frequency changer or cycloconverter), and DC to AC (inverter). In wing to the main DC-DC converter, most PSU manufactured today for AC input applications moreover include flipside switching regulator- power factor correction (PFC) front end and may include PCB-mounted regulators for auxiliary outputs. The field of engineering that deals with the diamond and wringer of power conversion circuits and devices is tabbed power electronics, although power supply diamond is a true cross-disciplinary task. It involves the circuit, magnetics, thermal management, tenancy and compliance issues. This site is SMPS/power electronics information guide. Here you will find a tutorial, tools, reviews, schematics, and other self-ruling online resources on all aspects of switching power supply diamond and selection, information on other energy conversion devices, as well as vital electrical engineering reference and electronic formulas. POWER ELECTRONICS / SMPS DESIGN- THEORY & TUTORIALS TI/Unitrode seminar books online Power supply diamond tutorial - vital concepts and operation Glossary of energy conversion and power electronics technology terms Electronic parts search and cross-reference FREE SIMULATION SOFTWARE AND CALCULATORS Find unshut source spin simulation programs, working demos of analog and mixed-signal simulators, and other engineering software & calculators Quick online quiz- how well do you know power supply safety PSU TOPOLOGIES: APPLICATION NOTES, GUIDES, SCHEMATICS Switching mode converter topology selection A review of standard computer PSU connectors and pinouts The nuts of switched mode regulators, diamond guides, SMPS spin diagrams, and other diamond resources PCB DESIGN OF ELECTRONIC CIRCUITS Layout guidelines for printed spin board; Trace spacing for voltages; Trace width calculator per IPC-2152; Guidelines, calculators, and other PCB diamond resources. TRANSFORMER AND INDUCTOR- THEORY & CALCULATIONS Magnetic unit conversion: table, formulas and calculator; Power transformer and inductor design: formulas, software, and other tools and guides. BACKUP POWER DEVICES Home generators - overview and comparison; Solar power fundamentals; UPS guide and review. Disclaimer, Disclosure and Terms of Use | Contact Us | About Us | Privacy © 2003, 2007-2017 Lazar Rozenblat All rights reserved