Transcription of Switching regulator fundamentals (Rev. C)
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Switching regulator fundamentals (Rev. C)
1 SNVA559C September2012 RevisedFebruary2019 SubmitDocumentationFeedbackCopyright 2012 2019,TexasInstrumentsIncorporatedSwitchi ngregulatorfundamentalsApplicationReport SNVA559C September2012 RevisedFebruary2019 SwitchingregulatorfundamentalsAdamCastal doABSTRACTS witchingregulatorsare increasingin popularitybecausetheyofferthe advantagesof higherpowerconversionefficiencyand increaseddesignflexibility(multipleoutpu tvoltagesof differentpolaritiescan begeneratedfroma singleinputvoltage).This paperwill detailthe operatingprinciplesof the four mostcommonlyusedswitchingconvertertypes: buck usedto reducea DC voltageto a lowerDC providesan outputvoltagethat is higherthanthe (invert) an outputvoltagethat is generatedoppositein polarityto the an outputvoltagethat is less thanor greaterthanthe inputcan be generated,as well ,somemultiple-transistorconvertertopolog ieswi
ON time of the switch. 2 Switching Converter Topologies The most commonly used DC/DC converter circuits will now be presented along with the basic principles of operation. 2.1 Buck Regulator The most commonly used switching converter is the Buck, which is used to down-convert a DC voltage to a lower DC voltage of the same polarity.
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