ABSTRACT
This chapter focuses on the analysis and design of fast-transient and very-high-frequency switching converters. It considers switching loss and conduction loss concurrently and an optimal switching frequency that could be inferred for a particular application. The chapter also considers time-domain parameters such as line transient, load transient and reference tracking. It discusses frequency-domain parameters such as maximum unity-gain bandwidths of various compensation schemes. The chapter reviews integrated circuit techniques of implementing fast-transient and very-high-frequency (VHF) switching converters. VHF is the short-form of very-high-frequency, that is, from 30MHz to 300MHz. A switching converter achieves the ideal efficiency of unity if no parasitic exists. Switching frequency of 30MHz, for now, is a good compromise of transient responses and efficiency. With an accurate hybrid scheme, the output settling times can be reduced to around 100 nanoseconds to 200 nanoseconds.
