Devices and switching models

stage · outline · 30 min

This page is a curriculum outline. Detailed lessons are still being developed.

Prerequisites: Foundations readiness map

Purpose

This stage introduces the physical parts used in power converters and teaches the difference between ideal symbols and real components.

Core Topics

  • resistors, capacitors, inductors, transformers, and magnetic cores
  • diodes, Schottky diodes, MOSFETs, IGBTs, SiC MOSFETs, and GaN HEMTs
  • gate drivers, bootstrap circuits, isolation, sensors, fuses, and connectors
  • datasheets and absolute maximum ratings
  • parasitic resistance, capacitance, inductance, leakage, saturation, ESR, ESL, and thermal resistance
  • packages, layout influence, and component selection tradeoffs

Must-Know Ideas

  • Every component has an ideal behavior and a real behavior.
  • Switching devices are controlled valves for energy flow.
  • Datasheets are engineering contracts, not marketing brochures.
  • Parasitics often decide whether a design is quiet, efficient, reliable, or unstable.
  • Thermal limits are electrical limits in disguise.

Practice Projects

  • Compare three MOSFET datasheets for the same voltage class.
  • Estimate conduction loss for a diode and a MOSFET.
  • Identify ESR and ripple current limits in capacitor datasheets.
  • Build a component glossary with AI-generated explanations and your own corrections.

Exit Criteria

Before moving on, the learner should be able to:

  • explain what each major component does in a converter
  • read the most important fields in a MOSFET, diode, capacitor, and inductor datasheet
  • estimate simple conduction loss
  • recognize why real components deviate from ideal models

Continue: Steady-state converters

Academy learning map