Introduction to Switched-Mode Power Supply (SMPS) Design

As modern digital electronics and integrated circuits demand highly efficient, compact, and stable DC power, traditional linear power supplies are no longer sufficient. Switched-Mode Power Supplies (SMPS) solve this challenge by using high-frequency switching to minimize energy loss and drastically reduce the size of filtering components. This comprehensive text-based course guides you through the foundational physics, essential topologies, and modern design methodologies required to understand and analyze SMPS systems. You will begin by mastering core electrical concepts, switching theory, and the fundamental components that make up a power supply. From there, you will explore various converter topologies, feedback loops, and efficiency calculations to build a solid engineering foundation. What you'll learn: - Understand the fundamental differences between linear regulators and switched-mode power supplies - Analyze core SMPS topologies including Buck, Boost, and Buck-Boost converters - Calculate filter requirements using inductors and capacitors for minimal voltage ripple - Explore modern power semiconductor devices like MOSFETs and GaN transistors for high-frequency switching - Study feedback control loops and stability criteria to ensure steady voltage regulation - Examine thermal management, EMI reduction, and safety standards in power supply design This course progresses systematically from basic electromagnetic principles and component behaviors to complete converter analysis and modern efficiency optimization techniques. You will learn through detailed written explanations, step-by-step mathematical derivations, and practical design scenarios. This course is designed for beginner electronics students, hobbyists, and junior engineers who have a basic understanding of introductory circuit theory but are new to power electronics. No prior experience with power supply design is required. Start reading today to master the fundamentals of modern high-frequency power conversion.