Title :
Modeling and implementation of a digitally controlled multiphase DC-DC converter
Author :
Du, Wei ; Iu, Herbert H C ; Wang, Weiyi ; Wang, Cong
Author_Institution :
Sch. of Electr., Electron. & Comput. Eng., Univ. of Western Australia, Crawley, WA, Australia
Abstract :
This paper presents a digital control and design and implementation of a multiphase DC-DC converter with a given set of performance specifications. First, the open loop transfer functions of a two-phase converter are derived. Digital voltage mode control is applied for voltage regulation, and digital active current sharing method is designed to obtain the average phase current. Then, digital controller is designed using different control design approaches. Simulation and experiment are used to verify the designed controller meets system specifications within the given parameter distributions.
Keywords :
DC-DC power convertors; digital control; digital integrated circuits; integrated circuit design; integrated circuit modelling; digital active current sharing method; digital voltage mode control; digitally controlled multiphase DC-DC converter; open loop transfer functions; voltage regulation; Buck converters; Control design; DC-DC power converters; Digital control; Inductors; Mathematical model; Pulse width modulation; Pulse width modulation converters; Switching converters; Voltage control; active current sharing; digital controller; digital voltage mode control; multiphase DC-DC converter;
Conference_Titel :
Power Engineering Conference, 2009. AUPEC 2009. Australasian Universities
Conference_Location :
Adelaide, SA
Print_ISBN :
978-1-4244-5153-1
Electronic_ISBN :
978-0-86396-718-4
