In this chapter, we will look at the time domain description of ideal inductors and capaci-
tors and review ideal versions of each type of switching supply. In later chapters, we will
look at the magnetic, electrical, and parasitic properties of inductors and capacitors and
their effect on the design of individual components.
2.1 Energy Storage Basics
Equation (2-1) contains the defi nition of inductance. An inductor has an inductance of one
henry if a change of current of one ampere/second produces one volt across the inductor.
VL
di
dt
(2-1)
This is Lenz ’ s law . The fi rst consequence of Eq. (2-1) ...
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