Title :
Null audio susceptibility of current-mode buck converters: small signal and large signal perspectives
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA
Abstract :
Small signal modeling of sensorless current-mode (SCM) control for DC-DC converters reveals a method of achieving zero () audio susceptibility. Similar results are known for peak current-mode (PCM) control. The true line-to-output responses of such SCM and PCM ""-designs are demonstrated to be nonzero for nonsmall signal disturbances. Definitions of large signal audio susceptibility are proposed beyond the linearized small signal paradigm. Investigations of true large signal audio susceptibility controllers are compared with the SCM method for buck converters.
Keywords :
DC-DC power convertors; electric current control; DC-DC converters; PCM; SCM; audio susceptibility; buck converters; current-mode buck converter; peak current-mode control; sensorless current-mode control; signal disturbances; signal modeling; signal perspectives; Buck converters; DC-DC power converters; Feedback loop; Open loop systems; Phase change materials; Sensorless control; Signal analysis; Switches; Transfer functions; Voltage control;
Conference_Titel :
Power Electronics Specialist Conference, 2003. PESC '03. 2003 IEEE 34th Annual
Print_ISBN :
0-7803-7754-0
DOI :
10.1109/PESC.2003.1217698
