Definition of Power Diodes, Introduction to Waveforms of Dynamic Processes in Power Diodes 1

A power diode is a semiconductor device capable of unidirectional conduction, allowing current to flow in one direction while presenting high resistance in the opposite direction. Power diodes are commonly used in rectifier circuits to convert alternating current (AC) to direct current (DC). In the field of power electronics, power diodes are primarily employed for high-power applications, such as power conversion, industrial motor drives, wind power generation, and photovoltaic systems.diode

The structure of a power diode is essentially a PN junction composed of a P-type semiconductor and an N-type semiconductor. When a forward voltage is applied to the diode (i.e., the P-type terminal is positive and the N-type terminal is negative), the depletion region of the PN junction narrows, allowing current to flow through the diode. At this point, the AD8275ARMZ-R7 diode conducts, and the magnitude of the current depends on the applied voltage and the characteristics of the diode. Conversely, when a reverse voltage is applied (i.e., the N-type terminal is positive and the P-type terminal is negative), the depletion region widens, and the diode exhibits a high-impedance state, blocking the current.diode