Circuits that convert voltage, current, and frequency through semiconductor switching, from fundamentals to industrial applications.
This is an editorially selected reading order. Begin at step 1 or go directly to the topic you need.
Power electronics is the technology of reshaping electrical power by switching semiconductor switches on and off at high speed. This article connects rectifiers, DC-DC converters, inverters, PWM, SiC/GaN, motor drives, grid interconnection, and thermal design with math and waveforms, and explains why it matters for electric vehicles, renewable energy, and data centers.
A DC-DC converter chops DC and stores energy in inductors or transformers to produce another DC voltage. This guide explains buck, boost, buck-boost, Flyback, LLC, and DAB operation, control, loss, and safety with diagrams and equations.
An inverter chops DC with semiconductor switches and synthesizes the AC voltage, frequency, and phase a load needs. This guide covers single- and three-phase topologies, PWM, motor control, losses, and protection with diagrams and equations.
SiC MOSFETs and GaN HEMTs use wider bandgaps and higher critical fields than silicon to enable efficient, high-frequency switching. This guide covers physics, loss, gate drive, EMI, reliability, and applications with equations.