Used in linear supplies for voltage step-down and galvanic isolation.
The final sections of the guide, often co-authored by other industry experts like Robert Kollman, provide "hands-on" advice for physical implementation: PCB Layout:
Selecting the right switching devices is crucial for efficiency and reliability. The guide covers: Understanding gate charge ( Qgcap Q sub g ), on-resistance (
: The phase shift at the crossover frequency (where the gain drops to ) must be at least 45∘45 raised to the composed with power 60∘60 raised to the composed with power -180∘negative 180 raised to the composed with power
A power supply isn't just a source; it is a control system. Mammano explains the : fundamentals of power supply design mammano pdf portable
Derived from the buck-boost topology, the flyback replaces the inductor with a coupled inductor (often called a flyback transformer).
VMC measures the output voltage, compares it to a reference voltage to generate an error signal, and compares that error signal to a fixed internal saw-tooth ramp to determine the PWM switch duty cycle.
The comprehensive book is published and available on platforms like Amazon.
A significant portion of the book is dedicated to analyzing different topologies—buck, boost, buck-boost, flyback, forward, and bridge converters. Mammano explains the benefits and drawbacks of each, helping designers choose the right one for their application. 3. Control Methods Used in linear supplies for voltage step-down and
Whether you find it on a professional bookstore or through a university library, "Fundamentals of Power Supply Design" by Robert Mammano is more than just a book—it's a masterclass from one of the field's greatest minds. Its combination of practical advice, theoretical depth, and historical context makes it an invaluable tool for anyone serious about mastering power electronics. By understanding the content and knowing where to look, you're well on your way to having this essential portable reference in your own digital library.
The digital PDF version is especially useful here because you can zoom in on the layout diagrams. Mammano dedicates a vital chapter to :
The first "fundamental" Mammano tackles is the architectural choice: Linear vs. Switching regulators.
A common pain point for hardware engineers is magnetics design. Mammano demystifies this topic by treating magnetic components not as black boxes, but as energy reservoirs governed by clear physical laws. Inductor Selection and Core Saturation Mammano explains the : Derived from the buck-boost
: Half-bridge and full-bridge topologies utilize multiple switching transistors. They are designed for high-power systems (several hundred Watts to Kilowatts) because they optimize transformer core utilization. Essential Design Components
: Schottky diodes are preferred in low-voltage outputs due to their low forward voltage drop ( Vfcap V sub f ) and fast reverse recovery time ( trrt sub r r end-sub
Understanding transformers and inductors is critical. The text covers the selection of magnetic materials, core sizes, and winding techniques to optimize efficiency and minimize size. 5. Electromagnetic Interference (EMI)
Fundamentals of Power Supply Design by Robert Mammano is an indispensable tool for anyone working in power electronics. Its focus on practical application rather than just theory makes it a reliable guide for solving the complex challenges inherent in modern power supply design. If you're interested, I can: