What is the reverse recovery time?

Reverse recovery time is the amount of time current flows in the reverse direction when the forward current instantaneously switches directions due to residual stored charge.

What is body diode reverse recovery charge?

drift layer, which is called the reverse recovery charge (Qrr). 3. Destruction of the body diode during reverse recovery. During reverse recovery, a high voltage (i.e., a high electric field) is instantaneously applied to the. body diode, which causes high carrier concentration.

Do Schottky diodes have reverse recovery?

The reverse recovery time of Schottky diodes are extremely fast (but soft) recovery characteristics. Also Schottky rectifiers have maximum rated junction temperatures typically in the range of 125°C to 175°C, compared to the typical 200°C for conventional pn junctions which further influences leakage current behavior.

Which diode is used for fast switching?

Schottky diode
The Schottky diode (named after the German physicist Walter H. Schottky), also known as Schottky barrier diode or hot-carrier diode, is a semiconductor diode formed by the junction of a semiconductor with a metal. It has a low forward voltage drop and a very fast switching action.

What is the forward recovery time of a diode?

Forward recovery time is the time required for the diode to stabilise the voltage drop to the certain level after the current starts to flow through the diode. Reverse recovery time is the time before the reverse current will drop to the certain value, applying the reverse voltage (Figure 2). In the lower , the faster diode is switching.

What is a soft recovery diode?

Soft Recovery Diodes. Soft-recovery diodes are typically used within variable speed motor controls and also in terms of switching power supplies. They can be free-wheeling, allowing for soft recovery with a low reverse recovery charge.

What is a fast switching diode?

A fast diode is simply a diode that is able to switch from conducting to resisting as quickly as possible. Diodes fall into three basic categories: the standard diode, the soft diode and the fast diode.