Christophe P. Basso, Christopher Basso, "Switch-Mode Power Supply SPICE Cookbook" (Repost)

Now you can get solutions to the most difficult problems facing power supply designers: shrinking size and increased thermal constraints. The models come in all three SPICE flavors with demo versions. You can start from scratch, installing the software and simulating the examples in the book without any SPICE experience whatsoever. All the common SMPS topologies are covered: buck, boost, buck-boost, and SEPIC