PROGRAM OVERVIEW

<p style="text-align: justify; ">Description </p><p style="text-align: justify; "> </p><p style="text-align: justify; ">Generally DC-DC converters are changed DC electrical voltage one level to another level like step-up and step-down. It is convert fixed DC input voltage to a variable DC output voltage. Various type of converter is an available boost, buck, cuk, zeta, SEPIC etc. There are two types of DC/DC converters: linear and switched. A linear DC/DC converter uses a resistive voltage drop to create and regulate a given output voltage, a switched-mode DC/DC converts by storing the input energy periodically and then releasing that energy to the output at a different voltage. The storage can be in either a magnetic field component like an inductor or a transformer or in an electric field component such as a capacitor. Transformer-based converters provide isolation between the input and the output. </p><p style="text-align: justify; "> </p><p style="text-align: justify; "> </p><p style="text-align: justify; "> </p><p style="text-align: justify; ">What will you learn? </p><p style="text-align: justify; "> </p><p style="text-align: justify; ">Non-Isolated DC/DC Converters </p><p style="text-align: justify; "> </p><p style="text-align: justify; ">Six most popular topologies of non-isolated DC/DC converters (also called classical type DC/DC converters) are as below. All of them are single-switch converters. </p><p style="text-align: justify; "> </p><p style="text-align: justify; ">1. Buck converter (step-down voltage only) </p><p style="text-align: justify; "> </p><p style="text-align: justify; ">2. Boost converter (step-up voltage only) </p><p style="text-align: justify; "> </p><p style="text-align: justify; ">3. Buck/Boost converter (inverse voltage, and step-up/step-down voltage) </p><p style="text-align: justify; "> </p><p style="text-align: justify; ">4. &#262;uk converter (inverse voltage, and step-up/step-down voltage) </p><p style="text-align: justify; "> </p><p style="text-align: justify; ">5. Zeta converter (step-up/step-down voltage) </p><p style="text-align: justify; "> </p><p style="text-align: justify; ">6. Sepic converter (step-up/step-down voltage) </p><p style="text-align: justify; "> </p><p style="text-align: justify; ">Isolated DC/DC Converters </p><p style="text-align: justify; "> </p><p style="text-align: justify; ">There are four most popular topologies of isolated DC/DC converters. All of them are able to step-up or step-down voltage. They are: </p><p style="text-align: justify; "> </p><p style="text-align: justify; ">1. Flyback converter (single switch) </p><p style="text-align: justify; "> </p><p style="text-align: justify; ">2. Forward converter (single switch) </p><p style="text-align: justify; "> </p><p style="text-align: justify; ">3. Single-ended two-switch forward converter </p><p style="text-align: justify; "> </p><p style="text-align: justify; ">4. Phase shift full-bridge converter </p><p style="text-align: justify; "> </p><p style="text-align: justify; ">Switch-mode converters offer three main advantages: </p><p style="text-align: justify; "> </p><p style="text-align: justify; ">&middot; The power conversion efficiency is much higher. </p><p style="text-align: justify; "> </p><p style="text-align: justify; ">&middot; Because the switching frequency is higher, the passive components are smaller and lower losses simplify thermal management. </p><p style="text-align: justify; "> </p><p style="text-align: justify; ">&middot; The energy stored by an inductor in a switching regulator can be transformed to output voltages that can be smaller than the input (step-down or buck), greater than the input (boost), or buck-boost with reverse polarity (inverter). </p><p style="text-align: justify; "> </p><p style="text-align: justify; ">Prerequisites: </p><p style="text-align: justify; "> </p><p style="text-align: justify; ">&nbsp; Having knowledge of Power Electronics fundamentals like SCR (Silicon Controlled Rectifier) Family.</p>