Modeling of Digitally-Controlled Voltage-Mode DC-DC Converters
- Resource Type
- Conference
- Authors
- Chen, Chih-Hung; Chang, Wei-Hsu; Chen, Dan; Tai, Liang-Pin; Wang, Chih-Ching
- Source
- IECON 2007 - 33rd Annual Conference of the IEEE Industrial Electronics Society Industrial Electronics Society, 2007. IECON 2007. 33rd Annual Conference of the IEEE. :2005-2009 Nov, 2007
- Subject
- Power, Energy and Industry Applications
Computing and Processing
Components, Circuits, Devices and Systems
Voltage
DC-DC power converters
Digital control
Buck converters
Field programmable gate arrays
Laboratories
Power electronics
Design engineering
Power engineering and energy
Circuit topology
Digital Control
Modeling
Buck Converter
- Language
- ISSN
- 1553-572X
In this paper, an S-domain control model for a digitally- controlled dc-dc buck converter is presented. The model gives detailed description about the gain and the phase lag of each block in the control loop in digital implementation. There is a significant phase lag in the digital implementation compared to that of a analog counterpart. This model has been experimentally verified in a field-programmable-gate-array (FPGA) based DC-DC buck converter in the laboratory. The model is easily understandable and practically useful for a majority of power electronic engineers familiar with DC converters using traditional analog control to design a digital compensator. This model can be easily extended to other converter topologies