Presentation Title: Power Semiconductor Devices – The Heart of Modern Power Electronics Subtitle: Characteristics, Types, and Emerging Trends
Slide 1: Title Slide
Title: Power Semiconductor Devices Subtitle: Switching, Controlling, and Converting Electrical Energy Visual: A collage of a wind turbine, an electric car charger, and a small circuit board with a MOSFET highlighted.
Slide 2: What Are Power Semiconductor Devices? power semiconductor devices ppt
Definition: Components used as switches or rectifiers in power electronic circuits (converters, inverters, choppers). Key Role: Handle high voltage (100V – 10kV+) and high current (1A – 10kA+). Operating States: Only ON (conducting) or OFF (blocking) – not in linear region. Purpose: Minimize power loss and heat generation.
Slide 3: Ideal vs. Real Device Characteristics
Ideal Switch:
Zero ON-state resistance (no loss) Infinite OFF-state resistance (no leakage) Instant switching (zero time)
Real Device (Trade-offs):
Conduction loss (VCE(sat) or RDS(on)) Switching loss (during turn-on/turn-off) Thermal and voltage limits Key Role: Handle high voltage (100V – 10kV+)
Slide 4: Classification of Power Devices
Diode Family (Uncontrolled) – Power Diode, Schottky Diode Transistor Family (Controlled) – BJT, MOSFET, IGBT Thyristor Family (Latching) – SCR, TRIAC, GTO, MCT Wide Bandgap (New) – SiC MOSFET, GaN HEMT