This document contains 50 code topics related to various power electronics and converter applications. The topics cover areas like boost converters, buck-boost converters, isolated converters, high step-up converters, inverters, and control techniques for photovoltaic systems and motor drives. Control strategies discussed include maximum power point tracking, active power factor correction, and pulse width modulation techniques. The applications mentioned include energy harvesting, renewable energy systems, battery storage, LED lighting, motor drives, and microgrids.