Title :
A three-level buck converter and digital controller for improving load transient response
Author :
Zhenyu Zhao;Aleksandar Prodi?
Author_Institution :
Toronto Design Centre, Exar Corporation 1505-180 Dundas Street West Toronto, ON, Canada M5G 1Z8
Abstract :
A method for improving heavy-to-light load transient response in low-power switch-mode power supplies is presented in this paper. It relies on the utilization of a 3-level 5-switch buck converter and a digital controller with an extended duty ratio control value. The method is experimentally verified with a 6 V to 1.3 V, 400 kHz, 8 W digitally controlled system showing 3 times faster response than that of a conventional buck.
Keywords :
"Buck converters","Digital control","Transient response","Voltage","Inductance","Inductors","DC-DC power converters","Capacitors","Steady-state","Switched-mode power supply"
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2010 Twenty-Fifth Annual IEEE
Print_ISBN :
978-1-4244-4782-4
DOI :
10.1109/APEC.2010.5433340
