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Chapter 8
losses are proportional to the switching frequency. Further, of these frequency-dependent
loss terms, the most signifi
cant are usually those that take place within the switch itself.
Therefore, understanding the underlying sequence of events in the switch during each
transition, and thereby quantifying the losses associated with each of these events, has
become a key expectation of any power supply designer.
In this chapter, we are going to focus mainly on the MOSFET, since that is the most
widely accepted “ switch ” in most high-frequency designs today. We will split its turn-on
and turn-off transitions into ...