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LAZAR's POWER ELECTRONICS GUIDE SMPS SWITCHING POWER SUPPLY DESIGN BASICS:CIRCUITS, SCHEMATICS, PCBs, ELECTRICAL ENGINEERING REFERENCE, SOFTWARE AND OTHER INFO |
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The electric energy is not normally used in the form in which it was produced or distributed. 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 (although "power converter" is a more accurate term for such a device). A typical application of a power supply unit (PSU) is to convert utility AC voltage into regulated DC voltages required for electronic equipment. Nowadays in most PSU the energy flow is controlled with semiconductors that are continuously switching on and off with high frequency. Such devices are referred to as switch mode power supplies or SMPS. They offer greater efficiency compared with linear supplies because a switch can control energy flow with low losses: when a switch is on, it has low voltage drop and will pass any current imposed on it; when a switch is off, it blocks the flow of current. As the result, in such a switch the power dissipation which is the product of voltage and current, can be relatively low in both states. SMPS are also smaller in size and lighter in weight due to the reduced size of passive components and lower heat generation. The industry trend toward miniaturization, advancements in semiconductor technology, as well as various energy efficiency regulations have made "switcher" the dominant type of PSU across practically the full spectrum of applications. Most of the switchers manufactured today for AC input applications include a PFC front end. In general, SMPS can be classified into four types according to the form of input and output voltages: AC to DC (also called off-line DC power supply), DC to DC (voltage or current converter), AC to AC (frequency changer or cycloconverter), and DC to AC (inverter). The field of engineering that deals with the design and analysis of power conversion circuits and devices is called power electronics, although power supply design is a true cross-disciplinary task. This site is the power electronics information guide. Here you will find tutorials, tools, reviews, schematics, and other free online resources on all aspects of switching power supply design and selection, information on other energy conversion devices, as well as basic electrical engineering and electronics reference. |
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POWER ELECTRONICS / SMPS DESIGN- THEORY & TUTORIALS |
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FREE SIMULATION SOFTWARE AND CALCULATORS |
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SMPS TOPOLOGIES: APPLICATION NOTES, GUIDES, SCHEMATICS |
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TI (Unitrode) seminar books online Power supply design basics- concepts and operation Glossary of energy conversion terms >>More: power electronics technology, SMPS guides |
Open source circuit simulation programs, working demos of analog and mixed-signal SPICE circuit simulators, free electronic design automation suite with schematic capture, simulation and PCB layout and other engineering software & calculators |
Switching mode converter topology selection A review of computer PSU connectors and pinouts The basics of switched mode regulators; application notes, design guides, schematics of main topologies, and other design resources |
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PCB DESIGN OF ELECTRONIC CIRCUITS |
TRANSFORMER AND INDUCTOR- THEORY & CALCULATIONS |
BACKUP POWER DEVICES |
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Layout guidelines for printed circuit board IPC-7351 Land Pattern Viewer and tools, Gerber viewer, free routing software, trace calculators, tutorials, guidelines and other free resources for circuit board designers |
Magnetic unit conversion table and calculator Power transformer design, free magnetics software, calculators and other tools and guides |
Standby home generators - reviews and comparison Solar energy for homes UPS guide |
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| ENGINEERING JOBS | ||||||||||||||||||||||||||
| FIND POWER SUPPLY PRODUCTS BY SPEC | ||||||||||||||||||||||||||
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