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Revealing Hybrid DC-DC Converters

  • 2025
  • Book
Authors
Mo Huang
Rui Paulo Martins
Book Series
Analog Circuits and Signal Processing
Publisher
Springer Nature Switzerland
Part of
Springer Professional "Business + Economics & Engineering + Technology"
Springer Professional "Engineering + Technology"

About this book

This book provides an in-depth introduction to hybrid DC-DC converters, which integrate both inductors and capacitors for high efficiency and high power density. These converters address the demands of applications like high-performance computing and automotive electronics. While numerous hybrid converter combinations have been explored in recent research, this book guides readers in selecting the optimal topology for a specific application. This book provides an incisive understanding of hybrid converters, revealing their underlying design philosophy. The authors present multiple examples of popular hybrid converters, tracing their evolution from simple, fundamental transformer models while highlighting their benefits and limitations. Furthermore, the book includes design guidelines for inventing new hybrid converters.

Table of Contents

  1. Frontmatter

  2. Chapter 1. Introduction: Conventional Inductive and Capacitive DC–DC Converters and Motivation of This Book

    Mo Huang, Rui Paulo Martins
    Abstract
    This chapter presents the foundational principles of conventional DC–DC converters, focusing on both inductive and switched-capacitor converter topologies. The working principles and power loss analysis of these converters are discussed in detail, providing the necessary background for understanding their limitations. With the increasing demand for more efficient, compact, and versatile power conversion systems, this chapter also explores the motivation behind the development of hybrid DC–DC converters.

  3. Chapter 2. From Switched-Capacitor to Hybrid Converters

    Mo Huang, Rui Paulo Martins
    Abstract
    This chapter introduces the DC transformer model of the basic 2:1 switched-capacitor converter and extends the analysis to high-order switched-capacitor converters. Various topologies, including dividers, Dickson converters, series–parallel converters, ladder converters, Cockcroft–Walton converters, and Fibonacci converters, are explored in-depth. In addition, this chapter discusses the transformer model and provides a method for calculating important metrics of SSL (slow-switching limit) and FSL (fast-switching limit). A comparative analysis of the performance of these high-order SC converters highlights their distinct advantages and limitations. Furthermore, this chapter explores three-phase SC converters and the key insights gained from transformer models. The results from these analyses serve as the foundation for the development of hybrid converters.

  4. Chapter 3. Basic Hybrid Converters

    Mo Huang, Rui Paulo Martins
    Abstract
    This chapter begins by discussing the necessity of hybrid converters in modern power conversion systems. It then examines three fundamental hybrid converter topologies: the double-step-down (DSD) converter, the dual-path converter, and the three-level converter, focusing on the integration of the 2:1 pre-stage switched-capacitor (SC) with cascading buck cell(s). This chapter details the evolution of these converters from their transformer models to actual circuit implementations, providing comprehensive insights into their operating principles and performances. A comparative analysis highlights the unique advantages and limitations of each topology. The insights gained from these designs enhance understanding of hybrid DC–DC converters and their potential to improve efficiency and adaptability in power conversion applications.

  5. Chapter 4. High-Order Hybrid Converters

    Mo Huang, Rui Paulo Martins
    Abstract
    This chapter explores high-order hybrid converters, focusing on advanced topologies that incorporate multiple stages and various pre-stage configurations. It begins by examining the evolution of multi-path converter from its DC transformer model, followed by an exploration of the multiple inductor hybrid (MIH) converter. This chapter continues with an in-depth analysis of the evolution of four-level converter and the SCB (switched-capacitor buck) converter. Moreover, the hybrid Dickson converter and the dual-inductor hybrid converter are also covered, along with the tri-state, dual-path converter and the Sigma converter. This chapter highlights their design principles, benefits, and associated challenges.

  6. Chapter 5. Design Flow and Examples of New Hybrid Converters

    Mo Huang, Rui Paulo Martins
    Abstract
    This chapter concentrates on the design process and practical applications for developing new hybrid DC–DC converters. It begins by outlining the systematic design flows used to create hybrid converters. This chapter then introduces specific new examples built upon a 3:1 pre-stage series–parallel configuration. These examples are categorized by the number of buck cells (1, 2, or 3) and include a detailed step-by-step guide to their design. Through these cases, this chapter illustrates how the concepts covered in earlier chapters are translated into real-world converter development.

  7. Chapter 6. Conclusions

    Mo Huang, Rui Paulo Martins
    Abstract
    In this book, we have presented a comprehensive exploration of hybrid DC–DC converters, shedding light on their design, advantages, and evolution. Hybrid converters, which combine the strengths of inductive and switched-capacitor (SC) technologies, are positioned as a promising solution in the ever-evolving field of power electronics. By leveraging the benefits of both technologies, hybrid converters offer superior power density, reduced voltage stress on switches, and enhanced system reliability. As the demand for more efficient, compact, and reliable power conversion systems continues to increase across various industries, hybrid converters are poised to play a critical role in shaping the future of power electronics.

  8. Backmatter

Title
Revealing Hybrid DC-DC Converters
Authors
Mo Huang
Rui Paulo Martins
Copyright Year
2025
Electronic ISBN
978-3-031-86350-9
Print ISBN
978-3-031-86349-3
DOI
https://doi.org/10.1007/978-3-031-86350-9

PDF files of this book don't fully comply with PDF/UA standards, but do feature limited screen reader support, described non-text content (images, graphs), bookmarks for easy navigation and searchable, selectable text. Users of assistive technologies may experience difficulty navigating or interpreting content in this document. We recognize the importance of accessibility, and we welcome queries about accessibility for any of our products. If you have a question or an access need, please get in touch with us at accessibilitysupport@springernature.com