Title :
Feedback control design of Zero-Voltage-Switched Quasi-Resonant dc-dc converters
Author :
Eaksuwan, Sira ; Bunlaksananusorn, Chanin
Author_Institution :
Fac. of Eng., King Mongkut´´s Inst. of Technol. Ladkrabang (KMITL), Bangkok
Abstract :
In this paper, feedback control design of Zero-Voltage-Switched Quasi-Resonant dc-dc converters is presented. The power stage model is derived by a method of circuit averaging, while the control stage model, consisting of an Error Amplifier (EA) and Voltage Control Oscillator (VCO), determined by the input/output relationship of the circuits. The obtained models are used in feedback control design of the prototyped converter. Test results show that the converter exhibits good output voltage regulation and fast transient response to a step-load change.
Keywords :
DC-DC power convertors; oscillators; resonant power convertors; circuit averaging; error amplifier; feedback control design; input-output relationship; output voltage regulation; voltage control oscillator; zero-voltage-switched quasiresonant dc-dc converters; Circuits; DC-DC power converters; Feedback control; Frequency; Prototypes; Switches; Switching converters; Switching loss; Voltage control; Voltage-controlled oscillators;
Conference_Titel :
Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology, 2008. ECTI-CON 2008. 5th International Conference on
Conference_Location :
Krabi
Print_ISBN :
978-1-4244-2101-5
Electronic_ISBN :
978-1-4244-2102-2
DOI :
10.1109/ECTICON.2008.4600594
