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 supply and the NON - ISOLATED SWITCHINGREGULATORSA ccording to the position of the switch andAN513/03931/18 Figure 1: The step down Buck regulatorThe power device is switched at afrequency f = 1/T with a conduction dutycycle, = ton/T.
The DC-DC converter topologies can be divided in two major parts, depending on whether or not they have galvanic isolation between the input supply and the output ... II - 3 “Buck-Boost converter: Step up/Step down voltage regulator Figure 3 : The step up/step down “Buck-Boost” regulator For a duty cycle under 0.5 the conversion
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