While the narrative above covers the concepts, the actual technical document you are looking for is likely:
Search Tip: The most comprehensive version is often hosted on the Texas Instruments website or TI E2E Design Support Forums. Search for "TI Power Management Seminar" or "Mammano Fundamentals of Power Supply Design PDF." Note that TI often distributes this as part of their "Power Management" training guides rather than a standalone bookstore book. fundamentals of power supply design mammano pdf portable
This is the single most misunderstood concept in power supply design. Mammano dedicates a brilliant, concise chapter to the Inductor Volt-Second Balance. While the narrative above covers the concepts, the
In a steady state, the voltage applied across an inductor over the on-time must equal the voltage applied over the off-time. If this balance tips, the inductor saturates, current skyrockets, and the MOSFET explodes. Search Tip: The most comprehensive version is often
In a portable PDF format, the waveforms illustrating this balance become your best friend. You can zoom in on the switching nodes, annotate the PDF with your own calculations, and internalize the math: ( V_on \cdot t_on = V_off \cdot t_off ). Mammano turns this calculus into a simple arithmetic rule.
Every hero has a weakness. The Switching Power Supply is noisy. Turning high currents on and off thousands of times a second creates electromagnetic interference (EMI)—a buzzing radio signal that messes with other electronics.
Mammano’s guides teach the solution: Filtering and Layout.