Robust Power Supply Design in a Supply-Chain-Challenged World

Robust Power Supply Design in a Supply-Chain-Challenged World by Ron Lenk
English | 2026 | True PDF, DJVU | 323 pages | 10.2 MB

In Robust Power Supply Design in a Supply-Chain-Challenged World, engineer and power electronics specialist Ron Lenk delivers a comprehensive guide that delves into the intricacies of designing high-performance power supplies that use exclusively multi-source components. After considering robust passive and active components and how to do successful modeling with LTSpice, Lenk focuses on concrete, detailed examples of the design of robust power supplies.

In this book, we show you how to build modern, high-performance power supplies that are robust to supply-chain challenges. We use a variety of older, multisourced ICs, as well as discrete parts, in modernized circuits that provide high performance while avoiding the need to redesign your power supply if there’s a supply-chain problem. If one manufacturer can’t supply the parts you designed with, you can simply get drop-in replacements from another manufacturer! Topics in this book include linear regulator replacement circuits; bang–bang converters; buck and boost converters, including some with synchronous rectification for high efficiency; power factor correction (PFC) circuits; and isolated converters. This book provides detailed information on discrete component selection and how to robustly design a variety of support and control circuits, including gate drives, isolated and non-isolated feedback, and control loops. A major emphasis of the book is on building SPICE models for the circuits to verify their performance. Specific circuit examples of all these converters and circuits are designed and explained in detail, and SPICE models are constructed showing how to measure and tune the circuits’ performance.

Throughout this book, the word “robust” will refer to components that are available from two or more significant manufacturers, with the parts being typically available through distributors. “Robust” will also refer to power supplies that are designed using exclusively robust components.

Robust design examples include:

A 500mV output LDO;
A 5mW Boost converter;
A 24W Passive PFC circuit;
A 48-to-1V, 100A Bang-Bang Converter with Synchronous Rectification for an automotive AI chip;
A 277VAC, 5000W PFC for LED stadium lighting; and
An off-line 22KW, 2MHz four-slice EV charger

… plus many other topical examples, all designed with little more than op-amps, comparators and 555 timers.

Readers will also find:

A thorough introduction to multiple types of converters, including bang-bang, PWM, and PFC
Detailed specifications, design principles, and simulation of robust converters
Practical discussions of high-speed and high-precision designs, and of system optimization
Treatment of reliability calculations and special topics such as current limiting and negative voltage generation

Perfect for power supply engineers, Robust Power Supply Design in a Supply-Chain-Challenged World will also benefit graduate and senior undergraduate students with an interest in power electronics and power systems. Each chapter has a special section with tips for the Hobbyist interested in designing and building their own power supplies.

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