There is a great deal of flexibility in choosing the value

[frankie_goes_to_hollywood]

There is a great deal of flexibility in choosing the value - Существует значительное количество универсальности в выборе значения ?

A peak value of 1 volt or so across the sense resistor provides a signal large enough to have good noise margin but which is small enough to have low power dissipation. There is a great deal of flexibility in choosing the value of the sense resistor. A 0.25 ohm resistor was chosen for Rs in the example converter and at the worst case peak current of 5.6 amps gives a maximum voltage of 1.40V peak.

[PicaPica]

Величину токоизмерительного резистора можно выбрать из достаточно широкого диапазона.