Title :
Investigating feedforward mechanism in current mode control
Author_Institution :
Fairchild Semicond., San Jose, CA, USA
Abstract :
Voltage mode control with input voltage feedforward effectively eliminates the effects of the line voltage variations in a conventional voltage mode control, and is the preferred control topology for point of load applications running in single phase without module current share requirements. One may ask: is there a "duality" type of feedforward mechanism existing in conventional current mode controls in order to improve load regulation and load transient response? The answer is quite certain, and this paper will investigate, and prove how load current feedforward can be implemented in a conventional current mode controller (Guo, 2005).
Keywords :
electric current control; feedforward; load regulation; power convertors; transient response; control topology; current mode control; feedforward mechanism; input voltage feedforward; line voltage variations; load current feedforward; load regulation; load transient response; voltage mode control; Buck converters; Error correction; Feedback loop; Inductors; Open loop systems; Operational amplifiers; Topology; Transfer functions; Transient response; Voltage control;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2006. APEC '06. Twenty-First Annual IEEE
Print_ISBN :
0-7803-9547-6
DOI :
10.1109/APEC.2006.1620661
