Chapter 1. Introduction.- Chapter 2. Motivation for High-Vin Converters and Fundamentals.- Chapter 3. Fast-Switching High-Vin Buck Converters.- Chapter 4. Design of Fast-Switching Circuit Blocks.- Chapter 5. Efficiency and Loss Modeling of High-Vin Multi-MHz Converters.- Chapter 6. Dead Time Control.- Chapter 7. Resonant Converters.- Chapter 8. Conclusion and Outlook.