Buck Regulator Circuit. The circuit for the buck regulator operates by varying the amount of time in which inductor receives energy from the source. The output inductor or the buck inductor is the key piece of this and nearly every other switching regulator.
For example we may need to power a 3 3v microcontroller from a 12v supply rail. The working of a buck boost regulator is explained using the circuit diagram as shown in figure 1. The circuit diagram of a 5v buck regulator based on the lm2678ic is shown below.
The output inductor or the buck inductor is the key piece of this and nearly every other switching regulator.
The resistive load is considered. The circuit for the buck regulator operates by varying the amount of time in which inductor receives energy from the source. Buck converter circuit many a times in the electronics world we find the need to reduce one dc voltage to a lower one. For example we may need to power a 3 3v microcontroller from a 12v supply rail.
