Analysis of the Working Principle and Application Fields of Ideal Diodes 1

An ideal diode is a theoretical electronic component that exhibits zero impedance under forward bias and infinite impedance under reverse bias. In practice, no diode can fully achieve this ideal state, but the behavior of many BU52011HFV-TR diodes can approach this ideal state within a certain operating range.diode

The working principle of an ideal diode is based on semiconductor physics. It is composed of two types of semiconductor materials, one is N-type semiconductor and the other is P-type semiconductor. At one end (P terminal) of the diode, impurity atoms introduce additional holes (positively charged "empty" electrons), while at the other end (N terminal), impurity atoms introduce additional electrons (negatively charged particles). When a diode is connected to a power source, electrons flow from the N terminal to the P terminal, and holes flow from the P terminal to the N terminal, forming a current.diode

In an ideal state, when the diode is forward biased (i.e., the P terminal is connected to the positive pole of the power supply and the N terminal is connected to the negative pole of the power supply), the resistance is close to zero and current can flow freely. However, when the diode is reverse biased (i.e., the N terminal is connected to the positive pole of the power supply and the P terminal is connected to the negative pole of the power supply), the resistance of an ideal diode is infinite and current cannot flow through it. In fact, real diodes will have a small current (called reverse saturation current) flowing through them when reverse biased, which is caused by thermal excitation.diode