Title :
Push-pull switching power amplifier with sliding-mode control
Author :
Calvente, J. ; Giral, R. ; Hernanz, J. ; Leyva, R.
Author_Institution :
Dept. of Electron. Eng., U.R.V., Tarragona, Spain
Abstract :
In this paper, a sliding-mode control technique is used to implement the control loop in a switching amplifier stage based on two step-down buck power converters operating in push-pull mode. By means of a discontinuity surface that uses the four state variables of the power converter, the authors obtain a large bandwidth suitable for audio applications. The presence of a first order compensating network assures a perfect tracking of the input signal
Keywords :
power convertors; audio applications; bandwidth; discontinuity surface; first order compensating network; input signal tracking; push-pull mode operation; push-pull switching power amplifier; sliding-mode control technique; state variables; step-down buck power converters; switching amplifier; Bandwidth; Buck converters; Equations; Power amplifiers; Power engineering and energy; Sliding mode control; Stability; Surface fitting; Switching converters; Transfer functions;
Conference_Titel :
Power Electronics Specialists Conference, 1996. PESC '96 Record., 27th Annual IEEE
Conference_Location :
Baveno
Print_ISBN :
0-7803-3500-7
DOI :
10.1109/PESC.1996.548777
