SWITCHING POWER SUPPLY DESIGN- A CONCISE PRACTICAL HANDBOOK

There are plenty of excellent books on power supply design. However, most of them are mainly academical, intended for teaching power electronics rather than providing complete, practical, easy-to-use information for the circuit designers. In my more than 35-year carrier of SMPS design, in practice, I still often had to derive equations or search app notes. That’s how I came up with this concise SMPS design handbook, with the intention to provide in a single place all the essential information needed in the SMPS design and analysis. Note it is not for learning power electronics from scratch. It does not provide ready to go schematics either. This book is for those who know the electronics basics and want to learn power supply design concepts, or need a quick reference and practical engineering equations without breaking the bank: you will not have to spend $50-$150 for it as you would for most textbooks. If nevertheless you are looking for something to learn power electronics from scratch, see a list of my favorite power supply design books.

I hope this handbook will be as useful to the experienced designer as it will to the recent engineering grad and a student.

Here are the key topics covered:
• Main practically used isolated and non-isolated converter topologies and selection recommendations;
• Active PFC design;
• Power transformers and inductors design, analysis and calculation of the losses;
• Feedback control loop design;
• Miscellaneous design and analysis topics, such as estimation of MOSFET switching time and losses, calculation of output ripple, little known empirical equations for PCB, thermal, and magnetics design, transient response analysis, and some practical tips.

The covered converter topologies are:
• Buck
• Fly-Buck™
• Boost
• Buck-boost (non-isolated flyback)
• SEPIC
• Isolated CCM flyback and DCM flyback
• Forward (including active clamp forward)
• Half-bridge
• Phase shifted full bridge with current doubler
• LLC
• CCM and DCM PFC boost

For each covered topology, I provided basic power train diagram, operation principal, basic waveforms, DC transfer function which takes into account power losses, voltage and current stresses in switches and rectifiers, magnetics equations, DC and AC components of the currents in all coils, and often overlooked rms currents in input and output capacitors. The calculations are done for worth case input voltage – something that is not always intuitive. For example, magnetizing inductance in a CCM flyback transformer has to be calculated at high line, while in DCM – at low line.

This handbook may speed up your design by saving time that would otherwise be spent on deriving equations or searching the literature, not to mention on re-spinning the board because of improperly selected magnetics or underrated components. See a review of the book on a reputable power electronic portal. You can download a free pdf chapter on flyback design to preview what's inside. If you find it useful, get the handbook here. You will have a choice between a printed version and Kindle Edition instant download (note, you don't need an actual Kindle device to read it- you can download there a free reader for your PC or a tablet). And after reading the book you have comments, suggestions, or found an error, feel free to get in touch.