Here, we introduce the buck converter topology and it's two switching operation modes. We derive the relationship between the input voltage, average output voltage, and active switch duty ratio.
I recommend to explain the basic operation including current direction flows in a simple explanation of buck converters, first, before explaining formulas.
If the input voltage is variable but the output voltage is desired to be a constant lower value can a controller be setup to control the duty cycle of that switch to hold the output voltage at the desired level?
your diagram shows the inductor after the MOSFET, but other discussions on buck converters indicate the inductor prior to the MOSFET. I wonder what your thoughts are on this difference?
When referring to iL I presume that you are talking about only the ripple current through the inductor and not load current as well
Holy crap thanks for this video! None of the other SMPS videos I could find actually bothered to explain the theory behind how these work at a basic level. This was super helpful and I'm assuming the boost converter video will be equally edifying.
So I want to use a buck converter to regulate a DC TV. Every-time a load is added it disturbs the TV. I am not considering a linear regulator as they are inefficient.
I have the following questions:
1. Is Vo almost constant since Vo == Vc?
2. Are buck converters suitable for regulating sensitive electronics like TV's and computers?
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