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Simulating Switching Converters with LTspice is my new book entirely dedicated to simulating power converters with the popular SPICE-based program. The book is 140-page long and will take you through the exploration of subcircuits, models and ready-made templates that I have assembled to let you simulate your projects. The book starts by describing how I built the subcircuits used in all my examples and gives examples for validating their performance. I then describe all the type 1, type 2 and type 3 compensators based on a classical op-amp, the TL431 (with discrete versions for the TL and TLV types) and operational transconductance amplifiers (OTA).

Digital versions are not forgotten with PI and PID filters assembled with delay lines. As usual, powerful macros automate the poles-zeros placement and deliver the wanted component values or coefficients in case of the digital versions. I then review many application circuits, starting with the basic switching cells (buck, boost and buck-boost) first modeled and stabilized with averaged models in voltage- and current-mode control. I then update them into isolated versions like flyback (classical, active-clamp, quasi-resonant, asymmetrical), forward (single- and two-switch, active-clamp, full-bridge).

You will learn how to extract the ac response from a switching circuit with the frequency-response analyzer (FRA) symbol, applied to the basic cells but also to isolated converters like LLC. From the ready-made templates, you can immediately test the component values you have determined. Owing to simplified subcircuits, simulation is extremely fast and lets you check results in few minutes, or even seconds with averaged models. Once the circuit is validated, you can insert manufacturers models and complicate the simulation for better granularity in the analysis.

The books is written in a casual, easy-to-read style with numerous illustrations. The table of contents is here. All the examples fully labeled in the illustrations are freely available from my LTspice summer 2025 files collection ZIP that I update regularly with new circuits. There are actually many switching templates in the files collection ZIP - 299 .asc files on February 26 - and I could not describe them all in this book. This is mainly because I wanted to keep the page count in control and offer a reasonably-low selling price.

As a final note, if I explain how to create a subcircuit symbol or how to import a given netlist, this book does not detail how to master LTspice as many good books already exist on the subject.

I hope you will enjoy this new book, available as printed and PDF versions. We keep in touch for comments, remarks and suggestions of course!

As with the previous books, I will collect comments and findings from readers to gather them in the errata file.

Stairway Press is the editor and they ship worldwide at a price better than Amazon. Also, the PDF will soon be ready for download from their site, check it out!

Stairway Press (US) Amazon (US) Amazon (France) Amazon (Germany) Amazon (Japan) Amazon (UK) AbeBooks

The book can also be ordered through an Ingram (the printer) distributor by specifying the ISBN number of this book: 978-1-960405-64-7.

For Poland, Empik or Allegro, if the book does not appear in their listing, ask for a special order to be placed via Ingram using the ISBN number.

For Türkiye, D&R, Kitapyurdu or Idefix should be able to get you the book but you need them to request a special order via Ingram using the above ISBN.

For other inquiries, or if you have troubles to order the book in your country, please contact the publisher.

For those of you who want the PDF version, beside buying from Stairway Press in the US, you can also buy it from me for 9 Euros via PayPal. Drop me a mail for instructions, thank you.