schottky diode?

Question

give an example of a situation in which you would use a Schottky diode(as a discrete device).

What are the advantages in this situation?

Answer 1

Most answers you get will have to do with power, but for analog signal processing, and analog to digital conversion, I have used these to make high speed sampling switches, for making a Sample-and-Hold circuit. They have a speed advantage over regular diodes because they have very little stored charge, so they switch quickly.

Answer 2

The Schottky diode (named after German physicist Walter H. Schottky), also known as hot carrier diode, is a semiconductor diode with a low forward voltage drop and a very fast switching action. The cat's-whisker detectors used in the early days of wireless and metal rectifiers used in early power applications can be considered primitive Schottky diodes.

When forward current flows through a solid-state diode, there is a small voltage drop across its terminals. A silicon diode has a typical voltage drop of 0.6–0.7 V, while a Schottky diode has a voltage drop of 0.15–0.45 V. This lower voltage drop can be used to give higher switching speeds and better system efficiency.



https://www.electrikals.com/

Answer 3

In a switching regulator
In series with the (dc) input supply (as protection against reversed input voltage)

They drop about 0.3 Volts as compared to 1 volt
if the input current is 2 Amps then you only lose 0.6
volts instead of 2

The currents inside a switching regulator are much larger than the output current (present for half the time and are ramps or triangular ...so peak losses can be very alarming)

in one word EFFICIENCY

drawbacks ...low Vr and they leak like sieves

Answer 4

They can have a much lower forward voltage drop than regular silicon rectifier diodes (depending on which part number you choose).

In some battery operated equipment / toys every fraction of a volt, saved, means more operational 'life' for the equipment / toy.

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