Sample-Data Modeling for Double Edge Current Programmed Mode Control in High Frequency and Wide Range DC-DC converters
No Thumbnail Available
Files
Date
2010-03-01
Authors
Journal Title
Series/Report No.
Journal ISSN
Volume Title
Publisher
Abstract
This dissertation focuses on sample-data modeling for double edge current programmed mode control (DECPM) and its application to high frequency and wide range DC-DC converters. Steady state conditions and subharmonic oscillation issues for DECPM are addressed. By combining the conventional peak and valley current programmed mode control, a sample-data model for DECPM is proposed. A small signal model for DECPM is developed by deriving the modulation gains (Fm) and the sampling gains (He) for DECPM from the proposed sample-data model. The sampling frequency dependence on the duty ratio and a large current loop gain at high frequency for DECPM are emphasized. The analytical results are verified by the simulation. Finally, DECPM is proposed as a method to control the high frequency and wide range DC-DC converters. A 10MHz four switch buck boost converter is implemented with DECPM to verify the viability of its application to high frequency and wide range converters.
Description
Keywords
Modeling, Current programmed Mode Control, Four switch Buck Boost Converter, Power electronics
Citation
Degree
PhD
Discipline
Electrical Engineering
