Title :
Linear switcher combination with novel feedback
Author_Institution :
Motorola Inc., Schaumburg, IL, USA
Abstract :
A linear regulator and switching power converter parallel combination with novel control is presented. The power converter is setup to operate without output feedback while the linear regulator operates with output feedback. The control scheme minimizes the linear regulator current for maximum efficiency. A higher order L-C filter reduces ripple. This circuit is appropriate for supply modulation of RF power amplifiers
Keywords :
feedback; power convertors; power supplies to apparatus; radiofrequency amplifiers; switching circuits; RF power amplifiers; control scheme; higher order L-C filter; linear regulator; linear regulator current minimisation; linear switcher combination; maximum efficiency; output feedback; ripple reduction; supply modulation; switching power converter; Delay; Filters; Output feedback; Power amplifiers; Pulse width modulation; Radio frequency; Radiofrequency amplifiers; Regulators; Switching circuits; Switching converters;
Conference_Titel :
Power Electronics Specialists Conference, 2000. PESC 00. 2000 IEEE 31st Annual
Conference_Location :
Galway
Print_ISBN :
0-7803-5692-6
DOI :
10.1109/PESC.2000.880517
