Robert Mammano’s Fundamentals of Power Supply Design (2017, Texas Instruments) is more than a book—it is a transfer of wisdom from a master to the next generation. For the student, it provides a clear on-ramp to a challenging field. For the practicing engineer, it is a trusted desk reference to resolve a stability issue, select an inductor, or sanity-check a loop compensation network.
In an era of automated design tools and AI-generated schematics, Mammano’s voice reminds us that great power supply design still requires fundamental understanding. If you design electronics that plug into a wall or run on a battery, this book belongs within arm’s reach.
Final Verdict: Essential reading for any hardware engineer. Five stars for clarity, authority, and practicality. Final Verdict: Essential reading for any hardware engineer
Robert Mammano is widely regarded as a pioneer in the power electronics industry. As a co-founder of Unitrode and a key figure in the development of PWM controllers, his writing carries the weight of decades of practical experience. His approach in this book is distinct: he treats the power supply not as a collection of perfect components, but as a system of interacting, non-ideal parts. The 2017 edition updates this classic knowledge for the modern era, incorporating advancements in wide-bandgap devices and digital control while retaining the fundamental physics that govern power conversion.
Fundamentals of Power Supply Design is widely regarded as an essential "bible" for engineers working in power electronics. Published by Texas Instruments, this book serves as both a textbook for students and a practical reference for practicing engineers. Robert Mammano, a pioneer in the power electronics industry (often credited as the inventor of the first PWM controller IC), leverages decades of experience to demystify the complex art of converting power efficiently. Robert Mammano is widely regarded as a pioneer
The book bridges the gap between theoretical circuit analysis and the practical realities of designing stable, efficient power supplies using modern integrated circuits.
While the book focuses on switching supplies, Mammano begins with the linear regulator—not as a historical footnote, but as a conceptual baseline. He explains dropout voltage, quiescent current, and thermal dissipation using intuitive analogies. He shows why linear supplies are still ideal for low-noise, low-current applications (sensitive RF or audio stages) but catastrophically inefficient for high-current or high-input-to-output voltage differentials. the power supply is the silent
Key takeaway: The power dissipated in a linear regulator is ( P_diss = (V_in - V_out) \times I_load ). For a 12V to 3.3V conversion at 1A, that is 8.7W of heat—a glaring inefficiency that switching regulators solve.
In the sprawling universe of electronics engineering, the power supply is the silent, indispensable heartbeat. Without clean, stable, and efficient power, the most sophisticated microprocessor or sensor is nothing more than an inert slab of silicon. Among the many texts that attempt to demystify this critical field, one stands out for its clarity, practical rigor, and authoritative lineage: Robert Mammano’s Fundamentals of Power Supply Design, published by Texas Instruments in 2017.
This piece explores the book’s origins, its core content, and why it has become a cornerstone for both aspiring and practicing engineers.