Title :
New Digital Control Technique for Improving Transient Response in DC–DC Converters
Author :
Batarseh, Majd Ghazi ; Shobaki, Ehab ; Fang, Xiang ; Hu, Haibing ; Batarseh, Issa
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Univ. of Central Florida, Orlando, FL, USA
Abstract :
A new digital control scheme aiming to improve the transient response of an FPGA-based digitally controlled DC-DC converters is presented in this paper. The proposed approach enhances the transient response by dynamically controlling the ramp of the Digital Pulse Width Modulator (DPWM) unit through applying either linear or nonlinear shift to the conventional ramp-based DPWM. This allows the compensator to reach steady-state faster. The advantages and disadvantages of both techniques are presented and weight against improvement on transient response. Detailed analysis, simulation results and experimental waveforms are presented to verify the concept.
Keywords :
DC-DC power convertors; PWM power convertors; control engineering computing; field programmable gate arrays; transient response; FPGA-based digitally controlled DC-DC converters; digital control technique; digital pulse width modulator; ramp-based DPWM; transient response improvement; Converters; Digital control; Gain; Numerical stability; Pulse width modulation; Transient analysis; Transient response; DC – DC Converters; DPWM – Digital Pulse Width Modulation; Digital Control; FPGA – Field Programmable Gate Array;
Conference_Titel :
Digital System Design: Architectures, Methods and Tools (DSD), 2010 13th Euromicro Conference on
Conference_Location :
Lille
Print_ISBN :
978-1-4244-7839-2
DOI :
10.1109/DSD.2010.84
