Transcription of Topologies for switch mode power supplies
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Topologies for switch mode power supplies
APPLICATION NOTETOPOLOGIES FOR SWITCHED MODEPOWER SUPPLIESby L. Wuidartthe rectifier, different types of voltageconverters can be made:- Step down buck regulator- Step up boost regulator - Step up / Step down buck - boost regulatorII - 1 The buck converter: Step downvoltage regulatorThe circuit diagram, often referred to as a chopper circuit, and its principal waveformsare represented in figure 1:This paper presents an overview of the mostimportant DC-DC converter Topologies . Themain object is to guide the designer in selectingthe topology with its associated powersemiconductor INTRODUCTIONThe DC-DC converter Topologies can bedivided in two major parts, depending onwhether or not they have galvanic isolationbetween the input su
II.2 The “Boost” converter: Step up voltage regulator Figure 2 : The step up “Boost” regulator In normal operation, the energy is fed from the inductor to the load, and then stored in the output capacitor. For this reason, the output capacitor is stressed a lot more than in the Buck converter. V in 1-δ V out = ton T δ= Device ...
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