Title :
Adaptive voltage positioning with average current mode control
Author :
Ruqi Li ; O´Brien, Tony ; Lee, Jeyull ; Beecroft, John ; Hwang, Kai
Author_Institution :
Cisco, Inc., San Jose, CA, USA
Abstract :
This paper investigates the adoption of average current mode control to achieve adaptive voltage positioning for low voltage, high current step down voltage regulators. Analytical results are first presented followed by experimental and simulation verification to validate the theoretical study with good correlation. The study reported in this paper demonstrates that average current mode control, which possesses a number of advantages over peak current mode control in multi-phase voltage regulator applications, is a viable alternative for adaptive voltage positioning in low to mid-range performance applications.
Keywords :
control system synthesis; electric current control; voltage regulators; adaptive voltage positioning; average current mode control; low voltage high current step down voltage regulators; Capacitors; Equations; Frequency conversion; Frequency locked loops; Impedance; Transfer functions; Voltage control;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2013 IEEE
Conference_Location :
Denver, CO
DOI :
10.1109/ECCE.2013.6647370