[Good book reading - "Switching Power Supply Simulation and Design - Based on SPICE"] - 002 Basic Content Introduction

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"Switching Power Supply Simulation and Design Based on SPICE 2nd Edition "

Basic content introduction 02

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[Good book reading together - "Switching Power Supply Simulation and Design - Based on SPICE"] - 001 Basic Content Introduction <I> https://en.eeworld.com/bbs/thread-1282725-1-1.html

3. Introduction to the chapters in this book

Chapter 4 mainly introduces the basic modules and general switch models of switching power supplies. The main functional blocks of switching power supplies include input modules, switching power conversion modules, inductors, output modules, feedback modules, etc. This chapter mainly discusses the switching power conversion modules, inductors and feedback modules. First, the operational amplifier simulation model, UC384X error amplifier model, reference power supply model and simulation setting conditions are explained for the feedback module. At the same time, passive devices such as resistors, capacitors and inductors are used to generate voltage, and the shortcomings of passive devices generating voltage are analyzed. Then, the hysteresis switch, undervoltage lockout function block (UVLO), how to eliminate spike noise, and transformer model are described for the switching power conversion module. Finally, this chapter also lists the switching power supply controller part, such as various circuit models such as the astable generator using a voltage-controlled oscillator, the current mode controller, the voltage mode controller, and the forward converter.

Chapter 5 mainly introduces the simulation and timing of non-isolated converters, and enables readers to understand how to design and simulate switch-mode converters through actual case analysis and theoretical analysis. First, the buck converter is explained. Taking "Input voltage 28V/output 12V/4A voltage mode buck converter" as an example, the author makes example design, AC analysis, transient analysis, power switch analysis, diode selection analysis, output ripple and transient response analysis, input ripple, and component selection analysis of buck converters. Then, taking "Voltage mode 48v/2A boost converter powered by car battery" as an example, the author describes the design method of boost converter, AC analysis, transient response analysis, component selection method, etc. Finally, taking "Voltage mode 12v/2A buck-boost converter powered by car battery" as an example, the author describes the design method of buck-boost converter, AC analysis, transient response analysis, component selection method, etc.

Chapter 6 mainly introduces the simulation and design practice of the front-end of the offline converter - the front-end circuit. The front-end circuit is a simple full-wave rectifier circuit or a more complex power factor correction circuit. First, we start with the rectifier. The rectifier mainly uses a rectifier bridge to convert AC power into DC power. This part explains the main contents such as the principle of capacitor selection, diode conduction time calculation, effective current of capacitor, diode current, input power factor, hold time, power supply impedance and waveform, surge current, voltage doubler, etc. Secondly, the theory and method of power factor correction are explained, and the definition of power factor, the concept of total harmonic distortion, the reason for power factor correction, harmonic restrictions, the demand for energy storage, the method of improving harmonic components, active and passive power factor correctors, BCM technology, hysteretic power factor correction, flyback converter, etc. are explained. Finally, this chapter mainly designs a BCM boost PFC. This book gives example design, average model simulation, how to reduce simulation time, week-by-week simulation method and follow-up boost technology.

Chapter 7 mainly introduces the simulation and design practice of the flyback converter, which is suitable for medium output current scenarios. This converter is simple, easy to design and low-cost. Flyback converters are used in a large number of consumer electronic products, such as laptop adapters, mobile phone adapters, set-top boxes, satellite receivers, displays, LCD monitors, etc. This book provides theoretical analysis and physical design of the design method of isolated buck-boost converter, the waveform of the flyback converter under the condition of no parasitic components, the waveform of the flyback converter under the condition of parasitic components, the quasi-resonant flyback converter, the observation of the drain signal characteristics when there is no clamping action, the signal when the drain voltage is biased and clamped, the clamp network design, the dual-switch flyback converter, the active clamp design, and the flyback topology. Finally, examples are given to illustrate the 20W, 90W single-output power supply and the 35W multi-output power supply.

Chapter 8 mainly introduces the simulation and practical design of the forward converter, which is suitable for low output voltage and high current scenarios and belongs to the buck topology. First, the design method of the isolated buck converter is described, and the reason why the core needs to be completely reset is explained. Then, the author explains 5 methods of core reset: the third winding, the dual switch structure, the resonant demagnetization, the RCD clamping, and the active clamping. Next, the synchronous rectification method, the multi-output forward converter design and simulation method, and the small signal response model of the forward converter are described. Finally, through the example design and simulation of "Single Output 12V/250W Forward Converter Design", the MOSFET selection, buffer installation, diode selection, small signal analysis, transient response simulation, short-circuit protection and component constraints of the whole converter are explained.

chejm

Very good technical book. I hope you can continue to share your reading experience of the specific content of this book.

dixondong

learning

黄佳庆

Very good technical book. I hope you can continue to share your reading experience of the specific content of this book.