Course Program
Part 1: DC/DC Converters
1. Converters with Hard-Switched Devices:
- Review of the main concepts of non-isolated DC/DC converters: Buck, Boost, Buck-Boost, Ćuk, SEPIC.
- Isolated Converters: Flyback, Forward, Push-Pull, Half-Bridge, and Full-Bridge.
Concerning these converters the following topics will be covered:
- Analysis of operation in discontinuous (DCM) and continuous (CCM) current modes;
- Calculation of Transfer functions for steady-state operation in CCM;
- Calculation of Ripple factors for output voltage and inductor current;
- Design criteria for active components (switches) and passive components (diodes, transformers, inductors, and filter capacitors).
2. DC/DC Converters with Resonant Switching:
- Classification of resonant converters;
- Quasi-resonant or resonant-switch converters: Phase-shifted full bridge;
- Resonant-load converters: Series-loaded and parallel-loaded converters;
- Multi-resonant converters: LLC and LCC.
Concerning these converters the following topics will be covered:
- Analysis of Operation in discontinuous and continuous current modes;
- Criteria for the design of active and passive components.
PART 2: Power Semiconductor Devices
- Introduction to Semiconductors used in power devices:
- Silicon (Si), Silicon Carbide (SiC), Gallium Nitride (GaN).
- Power Diodes:
- PN-junction and Schottky diodes: Static and dynamic characteristics.
- Power MOSFETs:
- Structure and operating principle.
- Turn-on and turn-off transients with inductive loads.
- Behavior under short-circuit conditions.
- IGBTs (Insulated Gate Bipolar Transistors):
- Structure and operating principle.
- Static and dynamic characteristics.
- HEMTs (High Electron Mobility Transistors):
- Structure and operating principle.
- Static and dynamic characteristics.
