Professional Educational Seminars

Switched-Capacitor Converters (SCC) are preferred over inductor based switch-mode regulators in low power applications that call for small size, or if the electromagnetic field radiated from the switched inductor may pose a problem. However, SCC suffer from a fundamental power loss deficiency that makes their use in some applications prohibitive. Losses can be reduced by applying soft switched SCC topologies that include an inductor. Another approach that has been recently investigated is SSC topologies with binary resolution that produce many "target voltages" of close proximity. This new SCC class is based on the properties of a novel Extended Binary (EXB) number representation.

 This seminar includes a comprehensive overview of present switched capacitor converters technology, covering both "hard switched" and "soft switched" configurations followed by in-depth analysis and modeling of the causes of power losses. The review addresses step up, step down and inverting topologies as well as regulation methods. Finally, the concept and features of the new EXB sequences will be presented, backed by simulation and experimental results, and the rules for translating these sequences into SCC topologies will be detailed.

The seminar is of intermediate level, intended for users and designers of switched capacitor converters.

 
 

The seminar will cover, with many examples, the topics:

 

 

  1. Introduction  (30min)

 

            • Switched capacitors versus switched inductors converters

            • Charge Pumps and Switched Capacitors converters

            • Losses in switched capacitors converters – overview

            • Examples of SCC and charge pump topologies

                       

 

  1. Losses in Hard Switched SCC  (50 min)

 

                        • Target voltages

                        • Equivalent resistance

                        • Efficiency

                        • Inherent power loss

                        • Effect of switch resistances

                        • Equivalent-circuit based average models

                        • Regulation

                        • Examples

 

  1. Losses in Soft Switched SCC (50 min)

     

                        • Topologies

                        • Waveforms of resonant networks

                        • Losses in resonant networks

                       

• Parasitic

                        • Equivalent-circuit based average models

                        • Regulation

                        • Examples

 

 

  1. Self Adjusting Binary SCC  (50 min)

     

                        • The concept

                        • The Extended Binary (EXB) numbers representation

                        • Features of the EXB

                       

• Translating the EXB to SCC topologies

                        • Proof of convergence

                        • Examples –simulation – experimental results

                        • Efficiency – output resistance

                        • Regulation

                        • Examples

 

 

5. Q&A

 

Control Design of PWM Converters: The User Friendly Approach

Computer Aided Analysis and Design

of Single Phase APFC Stages

 

Feedback Design in Operational Amplifiers and  PWM Converters:

The User Friendly Approach

 

Fundamentals of PWM Converters

 

Introduction to CMOS Operational Amplifiers

 

Control Design of PWM Converters:

 The Intuitive Approach

 

Fundumentals of PWM Converters

 

Computer Aided design of Power Factor Correction Systems

 

Power Electronics of Piezoelectric Elements

Introduction to Power Management for Portables

Dynamics and Stability of Switch Mode Converters

Modern Soft Switched Converter Topologies

 

Control Design of PWM Converters: The User Friendly Approach

Switched Capacitors Converters

 

Essentials of Switch Mode Converters

 

מגברי שרת מודרניים

Power Electronics of Piezoelectric Elements

 

Digital Control Design of PWM Converters: The Time-Domain Approach