Explain the operating principle of Buck converter?
A buck converter has two switches, one is a solid state switch and the other switch is a freewheeling diode. The combination of these two switches forms a connection with a low-pass LC filter in order to reduce current or voltage ripples. This helps in generating regulated dc output. A pure resistor is connected across this whole arrangement that acts as a load of the circuit.
The whole operation of the circuit takes place in two modes. The first mode is the one when the power MOSFET i.e., switch S1 is closed.
In this mode of operation, switch S1 is in closed condition thus allows the flow of current to take place through it.
Now, the second mode of operation takes place when switch S2 is closed and S1 gets open. The inductor in the circuit will store the energy so, once S1 will get open the inductor in the circuit will start acting as the source.
How to Calculate Average output current for step down chopper (Buck converter)?
Average output current for step down chopper (Buck converter) calculator uses Average Current = Duty Cycle*(Source voltage/Resistance) to calculate the Average Current, The Average output current for step down chopper (Buck converter) formula is defined as the average of the load current passing through the load connected to the buck converter over a complete input cycle. Average Current is denoted by I_{avg} symbol.
How to calculate Average output current for step down chopper (Buck converter) using this online calculator? To use this online calculator for Average output current for step down chopper (Buck converter), enter Duty Cycle (D), Source voltage (Vs) & Resistance (R) and hit the calculate button. Here is how the Average output current for step down chopper (Buck converter) calculation can be explained with given input values -> 0.09 = 0.1*(9/10).