CHAPTER 7 Boost-Buck Converter
A boost-buck converter is a single-switch converter, which consists of a cascade of a boost converter followed by a buck converter. The power train of typical boost-buck circuit topology (used as an LED driver) is shown in Figure 7.1.
Figure 7.1: Boost-Buck (Cuk) Power Train.
The converter has many advantages:
- The converter can both boost and buck the input voltage. Thus, it is ideal for cases where the output LED string voltage can be either above or below the input voltage during operation. This condition is most common in automotive applications, or when a customer wants a single driver design to cover a wide ...
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